Jenačković Gocić et al. 2020, Biologica Nyssana 11(2) 11 (2) December 2020: 71-84 DOI: 10.5281/zenodo.4393949 Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia Original Article Dragana Jenačković Gocić Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, 18000 Niš, Serbia draganaj@pmf.ni.ac.rs (corresponding author) Ljiljana Bolbotinović Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, 18000 Niš, Serbia ljiljana.bolbotinovic@pmf.edu.rs Marina Jušković Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, 18000 Niš, Serbia marinaju@pmf.ni.ac.rs Danijela Nikolić Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, 18000 Niš, Serbia danid@pmf.ni.ac.rs Vladimir Ranđelović Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, 18000 Niš, Serbia vladar@pmf.ni.ac.rs Received: December 07, 2020 Revised: December 14, 2020 Accepted: December 14, 2020 Abstract: This paper presents the distribution of nine endangered, rare or potentially invasive plant species present in the Serbian flora, based on field investigations, literature and herbarium data. The chorology of the following vascular plants: Ranunculus lateriflorus, Elatine alsinastrum, Sedum stefco, Galium boreale, Ornithogalum narbonense, Cyperus serotinus, Cyperus odoratus, Typha laxmannii and Typha shuttleworthii, is shown on 10 x 10 km2 UTM maps. The data on the distribution of these endangered and rare species provide a valuable base for estimating and revising their threatened status in Serbia, as well as for conducting adequate conservation measures with regard to their habitats. Chorological data on the Cyperus odoratus species in Serbia are significant for getting to know its naturalization history and spreading pathways in both Serbia and its neighbouring countries. Key words: distribution, endangered plants, flora, invasive species, new chorological data, rare species, Serbia Apstract: Uvid u horologiju pojedinih ugroženih, retkih i potencijalno invazivnih biljnih vrsta u Srbiji U ovom radu, prikazana je distribucija devet ugroženih, retkih i potencijalno invazivnih vrsta prisutnih u flori Srbije na osnovu terenskih, literaturnih i herbarijumskih podataka. Horologija sledećih vaskularnih biljaka: Ranunculus lateriflorus, Elatine alsinastrum, Sedum stefco, Galium boreale, Ornithogalum narbonense, Cyperus serotinus, Cyperus odoratus, Typha laxmannii i Typha shuttleworthii, prikazana je na 10x10 km2 UTM kartama. Podaci o distribuciji ugroženih i retkih vrsta, koji su ovde prikazani, predstvaljaju dragocenu osnovu za procenu i reviziju njihovog statusa ugroženosti na području Srbije, i sprovođenje adekvatnih mera zaštite njihovih staništa. Podaci o distribuciji vrste Cyperus odoratus u Srbiji su od velikog značaja za upoznavanje istorije procesa naturalizacije i puteva širenja njenih individua u našoj i susednim zemljama. Ključne reči: rasprostranjenje, ugrožene biljke, flora, invazivne vrste, novi horološki podaci, retke vrste, Srbija Introduction It is well-known that continuous monitoring of the floristic composition and abundance of plant species, especially those that are threatened, alien or weed, has enormous significances for biodiversity conservation. Monitoring the population of threatened species has a significant role in conducting protection measures in order to prevent their eventual extinction, while collecting data on the presence and spreading pathways of new, mostly invasive species, is significant for controlling the size of their populations and protecting autochthonous flora. Despite the intensive study of Serbian flora over the last decades, new species are still being found (Ranđelović et al., 2002; Niketić et al., 2009; Đorđević et al., 2010; Đorđević et al., 2014; Tomović et al., 2016; Stojanović et al., 2017), as well as new localities for rare and endemic plant species (Tomović et al., 2007; Zlatković et al., 2007; Niketić © 2020 Jenačković Gocić et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and build upon your work non- commercially under the same license as the original. 71 & Tomović, 2008; Zlatković & Bogosavljević, 2014; Jenačković et al., 2015; Đorđević et al., 2017), which supports the fact that the flora of Serbia has not yet been, and probably never will be, fully explored. During intensive phytocoenological research conducted in the areas of NE, E and SE Serbia on diverse habitat types, including rivers, ponds, seasonal flooded habitats, wet meadows and rocks over the last three years, new chorological data on some threatened, rare, endemic and potentially invasive plant species have been collected. This research confirms the already known fact that the previously mentioned habitat types are refuges for numerous rare and endangered plants (Stojanović et al., 1994), so they are significant for the conservation of genetic, species and ecosystem diversity. In the regions of NE, E and SE Serbia, they are, unfortunately, poorly investigated, both floristically (Bogosavljević et al., 2007; Petrović et al., 2007; Stanković et al., 2009; Jenačković et al., 2015) and phytocoenologically (Ranđelovć et al., 2007; Ranđelović & Zlatković, 2010; Jenačković et al., 2010; Jenačković, 2017). Generally, publishing new chorological data for the previously mentioned groups of plants enriches knowledge regarding their distribution and provides adequate material for writing and publishing new editions of Flora of Serbia, as well as Red list and Red books of the Flora of Serbia and the Serbian List of Invasive plant species. In this paper, the authors give detailed information on the distribution pattern of nine vascular plants in Serbia: Ranunculus lateriflorus DC., Elatine alsinastrum L., Sedum stefco Stefanov, Galium boreale L., Ornithogalum narbonense L., Cyperus serotinus Rottb., Cyperus odoratus L., Typha laxmannii Lepechin and Typha shuttleworthii Koch & Sonder in Koch. Material and methods The distribution of each of the species presented in this study is showed on a 10 x 10 km2 UTM grid based on field, literature and herbarium data. Field investigation of different habitats was carried out in the period 2017-2020 in the areas of NE, E and SE Serbia. Relevant floristic and phytocoenological literature published in the last seventy years was also used as an adequate source of chorological data. Georeferenced data on the distribution of specimens deposited in the Herbarium of the Faculty of Sciences and Mathematics, Department of Biology and Ecology, University of Niš (HMN) and Herbarium of the Institute of Botany and Botanical Garden “Jevremovac”, University of Belgrade (BEOU) are showed on UTM grids, too. Plant material collected during field investigation was determined by using the dichotomic identification keys (Josifović, 1970 – 1980; Tutin et al., 1964 – 1980). The nomenclature of the species recorded was uniformed to the Flora Europaea (Tutin et al., 1964 – 1980). The threatened status for the species mentioned in the section above is considered in terms of IUCN (2000) criteria and categories. Results and Discussion Ranunculus lateriflorus DC. General distribution: R. lateriflorus has been recorded in Europe (Spain, France, Italy, Austria, Slovakia, Hungary, Romania and all countries of the Balkan Peninsula except Albania), North Africa (Morocco and Algeria) and Asia (countries of the western Asia, Ukraine and Russia). Distribution in Serbia: Most published data on R. lateriflorus distribution in Serbia are for the Province of Vojvodina (Diklić, 1992; Purger, 1993; Panjković et al., 2012; Šturc, 2014) (Fig. 1). Other parts of Serbia have been poorly investigated, especially the territory of NW, W, SE and C Serbia, Pomoravlje and regions of Kosovo. Outside of Vojvodina province, R. lateriflorus was recorded in the Šumadija region: Rakovica and Grocka (Diklić, 1992); NE Serbia: Negotin and Kladovo (Diklić, 1992); E Serbia: Pirot (Nikolić et al., 1986; Diklić, 1992) and S Serbia: Leskovac (Diklić, 1992). Unpublished chorological data: NE Serbia: Krivelj – EP88 (leg. Pančić, J. 2327, 1876, BEOU); Šumadija region: Jovanovac – DP97 (leg. Pančić, J. 2309, 1870, BEOU); Banat region: Melenci – DR44 (leg. Niketić, M., Tomović, G. 48059, 23.04.2016, BEOU); Farkaždin – DR50 (leg. Lakušić, D., Tomović, G. 47302, 19.04.2016, BEOU; leg. Lakušić, D., Tomović, G., Kuzmanović, N., Kabaš, E., Đurović, S., Janković, I., Milekić, T. 47375, 17.05.2016, BEOU). New chorological data: It has been found in the surroundings of Donje Međurovo village (E Serbia – EN69, 43°18’22’’ N, 21°50’25’’ E, 185 m a.s.l., leg./det. Jenačković, D. 14367, 29.05.2018, HMN). At this study site, on a seasonally flooded and salted habitat that borders with a cultivated area, a small population of R. lateriflorus was recorded, which is under strict protection. It was made up of less than a hundred individuals. Most of the individuals recorded are growing in association with Eleocharis palustris and Oenanthe silaifolia, and they are part of the composition of the halophilous community, with Beckmannia eruciformis being dominant. Habitat characteristics: R. lateriflorus is an annual therophyte that grows and blooms during the spring on wet, sandy and seasonally flooded habitats. IUCN threatened status in the world: Least concern (LC). IUCN threatened status in Serbia: Endangered – Vulnerable (EN B1; B2b, c; C1; C2a/VU A1b, c, e; 72 BIOLOGICA NYSSANA ● 11 (2) December 2020: 71-84 Jenačković Gocić et al. ● Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia 73 A2c, e; D1; D2). According to Király (2007), R. lateriflorus is a legally protected species in Hungary, where it is classified in the category NT (Near threatened). Generally, its habitats are exposed to strong negative anthropogenic pressure, which can be seen in the decreasing size of its population, so applying adequate conservation measure is needed not only in Serbia, but also globally. Elatine alsinastrum L. General distribution: E. alsinastrum is a Euro- Siberian sub-Mediterranean species that grows in temporary water bodies in Europe (from the Iberian Peninsula, north to France and Belgium, east to Poland and Ukraine, and in almost all countries in the Mediterranean Basin), Asia (Russia, Ukraine, Georgia, Armenia, W Siberia and Kazakhstan) and North Africa - Morocco, Algeria and Tunisia (Popiela et al., 2013). Distribution in Serbia: Although Blečić (1972) stated that the species is often found in Serbia, literature sources and herbarium collections provide little data on E. alsinastrum chorology in Serbia (Fig. 2). Until now, it has been documented that E. alsinastrum grows in ditches in the Bačka (Panjković, 2005) and Srem regions (Perić et al., 2016). Unpublished chorological data: During the 19th century, Josif Pančić collected specimens of E. alsinastrum at a few locations south of Vojvodina province. He found this species in the area surrounding Belgrade (Rakovica – DQ55, leg. Pančić, J. 3170, 1877, BEOU), Sobovica (Bele Bare – DP88, leg. Pančić, J. 3168, 1851, BEOU), Bubanj – EN69 (leg. Pančić, J. 3167, 1885, BEOU) and in the valley of the Kolubara River (leg. Pančić, J. 14593, BEOU, this data is not shown on Fig. 2). New chorological data: Two years ago, in the area surrounding the village of Donje Međurovo (SE Serbia – UTM, 43°18’18’’ N, 21°50’10’’ E, 183 m a.s.l.) in seasonally flooded habitats, a community was recorded, with E. alsinastrum dominance (Fig. 2). The following species: Eleocharis palustris, Alisma plantago-aquatica, Veronica anagallis- aquatica, Mentha pulegium and Beckmannia eruciformis were part of the composition of the Elatine alsinastrum community. Specimens of E. alsinastrum are stored in HMN (leg./det. Jenačković, D. 14370, 29.05.2018). More than a hundred years ago, Josif Pančić found E. alsinastrum in the vicinity of Donje Međurovo (Bubanj – EN69), but he did not publish that record. Habitat characteristics: E. alsinastrum inhabits temporary water bodies or seasonally flooded zones of permanent water bodies. IUCN threatened status in the world: Near threatened (NT) with decreasing population trend. IUCN threatened status in Serbia: not threatened. Fig 1. Distribution map of Ranunculus lateriflorus in Serbia (A). The photographs show it growing on seasonally flooded habitats in the vicinity of Donje Međurovo village (B). BIOLOGICA NYSSANA ● 11 (2) December 2020: 71-84 Jenačković Gocić et al. ● Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia 74 Elatine triandra Schkuhr is the only species from the genus Elatine that is protected in Serbia. Based on literature sources and herbarium data, as well as the authors’ field experiences, it can be concluded that E. alsinastrum is a rare species of Serbian Flora which requires some kind of protection. Its small populations inhabit sensitive habitat types that are threatened by diverse anthropogenic factors, such as the drainage of seasonally inundated land, stabilization of hydrological regimes, agricultural improvement etc. The same problem also exists in other European countries, so E. alsinastrum could be considered as rare species throughout most countries in Central Europe (Schnittler & Günther, 1999). Elatine alsinastrum is classified as a critically endangered species in Bulgaria (Petrova & Vladimirov, 2009), and near threatened in Hungary (Király, 2007). In Croatia, it is rarely recorded, and known only from old literature and herbarium sources, so it is described as an insufficiently known plant species (DD – data deficient) (Prlić, 2015). Sedum stefco Stefanov General distribution: It is an endemic species of the Balkan Peninsula that has been recorded in four countries (Serbia, Bulgaria, Macedonia and Greece) so far. Distribution in Serbia: The first data published on the presence of S. stefco in Serbian flora date from the end of the 20th century and refer to Radan Mountain (Zlatković et al., 1993; Zlatković & Ranđelović, 1995) and the Pčinja River gorge (Zlatković & Ranđelović, 1995). By publishing data on the geographical position of population of the species S. stefco in E Serbia (the Temštica gorge) and S Serbia (Kozjak Mountain – Monastery Prohor Pčinjski), Tomović et al. (2003) made the previous knowledge of its distribution more complete (Fig. 3). New chorological data: Two populations of the strictly protected species, S. stefco, were found on Stara Planina Mountain at a locality called Strejnica (E Serbia – FP20, 43°21’20.24’’ N, 22°35’31.91’’ E, 1501 m a.s.l., leg./det. Ranđelović, V., 10.07.2020; E Serbia – FP20, 43°21’20.32’’ N, 22°35’31.70’’ E, 1550 m a.s.l., leg./det. Ranđelović, V., 02.08.2020). Individuals of the S. stefco species inhabit fragments of red sandstone with other species characteristic for rocky vegetation, including Sedum annuum, Sedum album, Silene lerchenfeldiana, Allium carinatum subsp. pulchellum, Scleranthus perennis, Anthemis carpatica, etc. Habitat characteristics: In Serbia, S. stefco is found on rocks (silicate and red sandstones), rock fragments, and dry, rocky ground at a wide range of altitudes, from 300 m to 1550 m a.s.l. IUCN threatened status in the world: not threatened. IUCN threatened status in Serbia: Near threatened – Least concern (data deficient) (NT-LC Fig 2. UTM map of the distribution of Elatine alsinastrum in Serbia (A). The photographs present its populations that inhabit shallow, ephemeral depressions in the vicinity of Donje Međurovo village (B). BIOLOGICA NYSSANA ● 11 (2) December 2020: 71-84 Jenačković Gocić et al. ● Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia (DD)). Sedum stefco is classified as near threatened in the Greek Red Data Book (Eleftheriadou et al., 2009), and vulnerable, and it is a legally protected species in the Republic of Bulgaria (Petrova & Vladimirov, 2010). Galium boreale L. General distribution: It is distributed over the subarctic and temperate regions of the Northern Hemisphere. In Europe, G. boreale is rare in the Mediterranean region. Distribution in Serbia: G. boreale is a legally protected species in Serbia. It is recorded in the Bačka region (Boža & Vasić, 1986); NW Serbia: Maljen Mountain (Gajić, 1973; Popović, 2005); W Serbia: Stolovi Mountain (Pavlović, 1974), Tara Mountain (Gajić, 1988), Zlatibor Mountain (Pavlović, 1951; Gajić, 1973; Novaković-Vuković, 2015), the Uvac River gorge (Veljić et al., 2006); SW Serbia: Ozren Mountain (Pavlović, 1955; Rakonjac, 2002) and Pešter plateau (Tatić, 1988; Rakonjac, 2002) (Fig. 4). New chorological data: While mapping herbaceous habitat types on Vlasina plateau, individuals of G. boreale were recorded at two sites: Murina Valley (SE Serbia – FN12, 42°42’51.52’’ N, 22°21’39.09’’ E, 1264 m a.s.l., leg. Jenačković Gocić, D., det. Ranđelović, V. 14383, 29.06.2020, HMN) and Bratašnica (SE Serbia – FN02, 42°41’37.39’’ N, 22°19’17.48’’ E, 1226 m a.s.l., leg./det. Ranđelović, V., 20.07.2020). They were a part of the meadow vegetation composition, together with individuals from the following species: Sanguisorba officinalis, Briza media, Holcus lanatus, Centaurea jacea, Filipendula hexapetala, Galium verum, Hypericum maculatum subsp. immaculatum, Potentilla erecta and Campanula patula. Habitat characteristics: G. boreale is a heliophilous species that prefers moist and well drained soils. It can tolerate partial shade and dry conditions. It is found in wet meadows and open woods. IUCN threatened status in the world: not threatened. IUCN threatened status in Serbia: Vulnerable – Near threatened (data deficient) (VU-NT (DD)). Galium boreale is a vulnerable species in the Bulgarian flora (Petrova & Vladimirov, 2009), too. Ornithogalum narbonense L. General distribution: It occurs in Europe (Portugal, Spain, France, Italy, Romania and countries on the Balkan Peninsula), Asia (Turkey, Azerbaijan, Armenia, Georgia, Syria, Lebanon, Israel and Jordan) and Africa (Egypt, Libya, Tunisia, Algeria and Morocco). Distribution in Serbia: According to Diklić (1975), O. narbonense is a species with sporadic occurrence in Serbia. Data on its distribution in 75 Fig 3. Distribution of Sedum stefco in Serbia (A). Photographs of Sedum stefco specimens (B) and a mixed community dominated by succulent plant species Sedum stefco and Sedum album (C), developed on rocky fragments situated on Stara Planina Mountain. BIOLOGICA NYSSANA ● 11 (2) December 2020: 71-84 Jenačković Gocić et al. ● Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia Serbia are poor. Until now, O. narbonense has been recorded at two localities in the Province of Kosovo: Podujevo and Orahovac (Nikolić et al., 1986) (Fig. 5). Ranđelović et al. (2005) stated that O. narbonense inhabits cultivated land in Southeastern Serbia, but did not give precise information on the geographical position of its populations. Further field investigations are needed in order to determine whether O. narbonense is a rare or insufficiently investigated species in Serbia. New chorological data: O. narbonense was recorded within meadow vegetation on Vlasina BIOLOGICA NYSSANA ● 11 (2) December 2020: 71-84 Jenačković Gocić et al. ● Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia 76 Fig 4. UTM map of the distribution of Galium boreale in Serbia (A) and photographs of individual specimens (B). Fig 5. Map of distribution of Ornithogalum narbonense in Serbia (A) and photographs of its inflorescence (B). BIOLOGICA NYSSANA ● 11 (2) December 2020: 71-84 Jenačković Gocić et al. ● Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia plateau, in a place named Jarčev potok (SE Serbia – FN02, 42°40’11.73’’ N, 22°20’12.35’’ E, 1234 m a.s.l., leg./det. Ranđelović, V., 21.07.2020). Agrostis capillaris, Briza media, Achillea millefolium, Campanula patula, Crepis conyzifolia, Dianthus deltoides, Galium verum, Hypericum maculatum subsp. immaculatum, Hypochaeris maculata, Potentilla argentea and Pastinaca hirsuta are the most abundant species at the site where these individuals of O. narbonense were found. Habitat characteristics: It grows in sunny, grassy and dry places such as grasslands, roadsides, crops and disturbed ground. IUCN threatened status in the world: not threatened. IUCN threatened status in Serbia: Vulnerable – Near threatened (data deficient) (VU-NT (DD)). Cyperus serotinus Rottb. General distribution: C. serotinus is a native species on the European and Asian continents while it is naturalized in North America and Australia. On the Eurasian continent, C. serotinus is distributed from the Iberia Peninsula through the countries of Central Europe and the Mediterranean Basin, Caucasus, Kazakhstan, Middle East and the Himalayas to Japan, most of China, Taiwan and Vietnam. Distribution in Serbia: C. serotinus is a rare and endangered species that is recorded in the Banat region: Deliblato Sands (Budak, 1983), Labudovo okno (Polić, 2006), Žilovo islet, Dolnice bay and Stevan Lowlands (Stevanović et al., 2004); Šumadija: on the banks of the Danube River near Belgrade (Čanak, 1976), NW Serbia: Loznica (Čanak, 1976), and C Serbia: Batušinac Ponds (Ranđelović et al., 2007) (Fig. 6). Unpublished chorological data: In the 21st century, individuals of the C. serotinus species were found at a few locations in the Danube River Valley, downstream from Belgrade (Malo Bavanište embankment – EQ05, leg. Stevanović, V. 49867, 22.09.2002, BEOU; Mali Lap – EQ16, leg. Stevanović, V. 22335, 26.07.2003, BEOU; Zatonje – EQ35, leg. Stevanović, V. 50093, 23.11.2013, BEOU; Prahovo (Bay Kusjaka) – FQ20, leg. Stevanović, V. 50073, 23.07.2013, BEOU). New chorological data: One population of C. serotinus was recorded on the right bank of the Danube River near Tekija (NE Serbia – FQ14, 44°41’28’’ N, 22°24’56’’ E, leg. Bolbotinović, Lj., det. Ranđelović, V. & Jenačković, D. 14368, 25.09.2018, HMN). The first record (unpublished) for this toponymy dates from the 19th century (Cyperus monti, Tekija – FQ14, leg. Pančić J. 15359, 1877, BEOU; Cyperus monti, Tekija – FQ14, leg. Pančić J. 12347, 1878, BEOU), but it refers to “old” Tekija, which was submerged after construction of the Đerdap I hydropower dam. Habitat characteristics: C. serotinus grows in seasonally flooded habitats, bays, banks of rivers and standing water bodies. 77 Fig 6. UTM maps of the distribution of Cyperus serotinus (A) and a photograph of its inflorescence (B). BIOLOGICA NYSSANA ● 11 (2) December 2020: 71-84 Jenačković Gocić et al. ● Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia IUCN threatened status in the world: Least concern (LC). IUCN threatened status in Serbia: Near threatened – Least concern (data deficient) (NT – LC (DD)). According to Nikolić & Topić (2005), C. serotinus is a vulnerable plant species in Croatian flora. Cyperus odoratus L. General distribution: C. odoratus is a pantropic species which has been naturalized in Europe (Spain, Italy, Serbia, Bulgaria and Romania) (Verloove, 2014). Distribution in Serbia: For a long time, C. odoratus has been confused with C. strigosus and other species from the Cyperus genus, so its exact naturalization history in Serbia is not known. After the revision of herbarium specimens deposited in BEOU, Verloove (2014) concluded that the first record of C. odoratus, under the erroneous binomial C. strigosus, was published at the beginning of the 21st century by Stevanović et al. (2004, 2005). It refers to Mali Lap marsh situated near the village of Dubovac (Banat region – EQ15) (Fig. 7). Stevanović et al. (2005) stated that C. strigosus grows in several places in the Danube Basin (km 1090 – 1075): Žilovo islet, Mali Lap marsh, Dolnice bay and the Stevan Lowlands. After the revision of herbarium material deposited in BEOU, the authors confirmed the presence of C. odoratus at Žilovo islet – EQ15 (Cyperus sp., leg. Stevanović, V., Stevanović, B., Sekulić, N., Šinžar-Sekulić, J. 49877, 08.09.2002, BEOU), while the presence of C. odoratus at Dolnice bay and Stevan Lowlands remains unconfirmed. Verloove (2014) stated that individuals from the C. odoratus species form small populations at numerous localities along the Danube River, from Kovin to Mihajlovac near Đerdap II hydropower dam, but he did not give precise information on the localities. Unpublished chorological data: After revision of specimens from the Cyperus genus stored in BEOU, the authors established that C. odoratus grows in one more place in the Banat region (Malo Bavanište – EQ05, leg. Stevanović, V. 49860, 22.09.2002, BEOU; leg. Stevanović, V. 49866, 22.09.2002, BEOU). During 2020, individuals from the C. odoratus species were recorded at localities situated northwest of the places mentioned in earlier published papers (Stevanović et al. 2005, Verloove 2014): Ada Ciganlija (DQ56 – 44°47’43.05” N, 20°25’31.15” E, leg. Pantović, J., Stevanoski, I., Ćosić, M. 69151, 16.10.2019, BEOU) and Pančevački rit (DQ66 – 44°49’53.41” N, 20°30’14.35” E, leg. Pantović, J., Stevanoski, I., Ćosić, M. 69160, 24.10.2019, BEOU) (Fig. 7). New chorological data: C. odoratus was found at three locations (44°41’27’’ N, 22°24’56’’ E; 44°41’20’’ N, 22°24’47’’ E; 44°40’34’’ N, 22°24’70’’ E) on seasonally flooded habitat positioned in surrounding of Tekija, near the Danube River (NE Serbia – FQ14, leg. Bolbotinović, Lj., det. 78 Fig 7. Map of distribution of Cyperus odoratus in Serbia (A) and a photograph of individual specimens (B). Jenačković, D. & Ranđelović, V. 14369, 25.09.2018, HMN). Habitat characteristics: In Europe, C. odoratus is mostly found on mud flats, gravelly or sandy river banks, estuaries, and in riparian woodland, drainage channels and ditches (Verloove, 2014). They form pure or mixed communities with other emergent macrophytes, such as C. serotinus. Otherwise, C. odoratus occupies new pitches very quickly and behaves like an invasive environmental weed (Verloove, 2014), so the knowledge of its distribution pattern and population status is important for determining how it spreads and how it can eventually be controlled. IUCN threatened status in the world: not threatened. IUCN threatened status in Serbia: not threatened. Typha laxmannii Lepechin General distribution: T. laxmannii is distributed from Europe through Siberia, the Caucasus, the Middle East, Kazakhastan and Mongolia to the Russian Far East, China and Japan. Distribution in Serbia: The first chorological data for T. laxmannii in Serbia are from Budak (1986), and they refer to the Banat and Bačka regions (Fig. 8). Radulović (2005) stated that individuals from the T. laxmannii species compose a community with Typha latifolia dominance in Carska Bara Special Nature Reserve. In the 21st century, a few authors have published data on T. laxmannii distribution outside the borders of Vojvodina province. Until now, it has been recorded in the following localities: Batušinac Ponds (Ranđelović et al., 2007), Šarpance village, Vražji Kamen, the vicinity of Dimitrovgrad town, Vranjska Banja (Zlatković et al., 2007), Rgotina lake (Zlatković & Bogosavljević, 2014), Smilovsko lake (Jenačković, 2017) and Zlatibor Mountain (Tomović et al., 2020) (Fig.8). New chorological data: During the summer of 2020, a small population of T. laxmannii was recorded in a canal, positioned east of the dam, through which water enters Vlasina Lake (SE Serbia – FN03, 42°44’59.01’’N, 22°19’43.34’’E, 1222 m a.s.l., leg. Nikolić, D., Jušković, M., Savić, A., det. Ranđelović, V. 14388, 01.08.2020, HMN). At this site, T. laxmannii grows mainly in association with Typha latifolia, Juncus effusus, Centaurium erythraea, etc. Habitat characteristics: It prefers permanently flooded habitats with shallow waters or seasonally flooded habitats, such as the margins of ponds, pools, canals, rivers, streams and lakes. IUCN threatened status in the world: Least concern (LC). IUCN threatened status in Serbia: Near threatened (NT). Typha laxmannii is classified as a critically 79 BIOLOGICA NYSSANA ● 11 (2) December 2020: 71-84 Jenačković Gocić et al. ● Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia Fig 8. UTM maps of the distribution of Typha laxmannii (A) and a photograph of the population recorded at Vlasina plateau (B). endangered species of Croatian flora (Nikolić & Topić, 2005), and it was recorded during summer 2000 for the first time (Topić & Ozimec 2001). Typha shuttleworthii Koch & Sonder in Koch General distribution: It occurs in Europe (from France east through the Czech Republic and Hungary to Romania and the Ukraine), the Caucasus and Asia (Turkey). Distribution in Serbia: T. shuttleworthii was considered to be a critically endangered species in Serbia during the 20th century (Ranđelović, 1999) because it was known at only a few localities: the spring of Jabukovačka River on Kukavica Mountain, the area surrounding Novi Sad, Kragujevac and Sjenica (Jovanović, 1986) (Fig. 9). Its status changed from critically endangered to endangered after establishing new sites in Eastern Serbia: Crna Reka gorge, Svrljiški Timok gorge and the environs of Bosilegrad (Topli Dol and Musulj) (Tomović et al., 2009). The first data on T. shuttleworthii distribution in C Serbia (Radan Mountain – Gornji Gajtan and Kosmača) and W Serbia (Tara Mountain – Kurjačine and Kozulja; Golija Mountain – Izubra) were published this year (Tomović et al., 2020). New chorological data: A small population of the strictly protected species T. shuttleworthii was recorded in a flooded depression on Stara Planina Mountain, next to the road leading to Tupavica waterfall (E Serbia – FN49, 43°15’42’’ N, 22°46’26’’ E, 975 m a.s.l., leg./det. Ranđelović, V. & Jenačković, D. 14384, 22.07.2018, HMN). Habitat characteristics: T. shuttleworthii usually builds small populations that cover a few square meters, mostly in anthropogenic habitats such as roadside ditches (Tomović et al., 2020), river and stream valleys, swamps and wet meadows (Kozłowska et al. 2011). IUCN threatened status in the world: Data deficient (DD). IUCN threatened status in Serbia: Endangered (EN B1 ab(i,ii,iii); B2 ab(i,ii,iii); C1) (Tomović et al. 2009). There is a need for additional field investigation due to the possibility of its wider distribution in Serbia. It is considered that its significant morphological similarity with T. latifolia is the main reason for the insufficient study of its distribution in Serbia (Tomović et al., 2020). The same problem exists in Bulgaria and Croatia, so T. shuttleworthii is classed as data deficient in these countries (Petrova & Vladimirov, 2009; Nikolić & Topić, 2005). Király (2007) stated that T. shuttleworthii is extinct in Hungary. Conclusion The chorological data presented in this paper are a valuable base for better understanding the distribu- tion patterns in Serbia of the vascular plants analyzed in this study, as well as estimating and potentially reevaluating their threatened status, and controlling 80 Fig 9. Map of distribution of Typha shuttleworthii in Serbia (A) and a photograph of its inflorescence (B). BIOLOGICA NYSSANA ● 11 (2) December 2020: 71-84 Jenačković Gocić et al. ● Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia 81 the size of their populations. The strictly protected and endangered plant species, R. lateriflorus, is poorly investigated outside the borders of Vojvodina province, especially in W Serbia and the Province of Kosovo. It mostly grows in shallow, seasonally flooded depressions that are affected by negative anthropogenic factors, so continuous monitoring of its population is needed due to a possible decrease in its population size. Similar habitat types are preferred by E. alsinastrum, a globally near threatened species whose distribution in Serbia has not been researched enough. Although it is not recognized as threatened in Serbia, the authors suggest that its status in this country should be reconsidered in accordance with the data provided in this research. According to existing floristic data, the Balkan endemic species S. stefco is distributed in the southern and eastern parts of Serbia. The border of its geographic range in Serbia is expanding to the north by establishing its existing population on Stara Planina Mountain. Individuals from the legally protected and vulnerable species G. boreale were mainly recorded within wet meadows and open woods in Western Serbia. The borders of its geographic range have moved significantly to the east after establishing its presence on Vlasina plateau. The poorly studied, vulnerable species of Serbian flora, O. narbonense, requires additional investigation in order to collect information with regard to its presence in other parts of Serbia (except the province of Kosovo and Vlasina plateau) and to reevaluate its threatened status. Populations of the near threatened plant species C. serotinus are recorded at only a few sites in Serbia, mainly in the valleys of the great lowland rivers including the Danube, Drina and Južna Morava. A recently recorded species in Serbia, C. odoratus spreads quickly on gravelly and sandy substrates along the Danube and Sava rivers, by forming a mixed community with the autochthonous macrophyte species. It is considered important to monitor its populations due to its huge potential to inhabit new pitches. Based on literature data and field experience, the authors consider that T. laxmanii has wider distribution in Serbia than currently known. Its habitats are insufficiently researched, especially south of Vojvodina province, so additional field investigations are needed in order to adequately estimate its threatened status. During the 21st century, the amount of chorological data on the strictly protected species, T. shuttleworthii, has significantly increased, so its threatened status has changed from critically endangered to endangered in Serbian flora. Collecting data on its distribution and population size is important, not only for reevaluating its threatened status at a national level, but also for globally estimating the category of its vulnerability. Acknowledgements. This study was supported by the Project of Ministry of Science and Technological De- velopment of Republic of Serbia (Contract No. 451-03- 68/2020-14/200124). The authors would like to thank Snežana Vukojičić PhD (Curator at the BEOU Herbari- um) and Marija Marković PhD (Curator at HMN Herbar- ium) for their help during the collection of chorological data for the species studied. References Blečić, V. 1972: Rod Elatine L. In: Josifović, M. (ed.), Flora SR Srbije, 3: 126-128, Srpska Akademija Nauka i Umetnosti, Beograd. Bogosavljević, S., Zlatković, B., Ranđelović, V. 2007: Flora klisure Svrljiškog Timoka. Proceeding of 9th Symposium on Flora of Southeastern Serbia and Neighbouring Regions, Niš, 41-54. Boža, P., Vasić, O. 1986: Galium boreale L. f. hyssopifolium (Hoffm.) DC. In: Sarić, M., Diklić, N. (eds.), Flora SR Srbije, 10: 161, Srpska Akademija Nauka i Umetnosti, Beograd. Budak, V. 1983: Fam. Cyperaceae J. St. Hil. In: Gajić, M. (ed.), Flora Deliblatske peščare: 362-372, Prirodno-matematički fakultet, OOUR Institut za biologiju, Novi Sad, Šumsko-industrijski kombinat “Pančevo“, OOUR specijalni prirodni rezervat “Deliblatski pesak”, Pančevo. Budak, V. 1986: Typha laxmannii Lepech. In: Sarić, M., Diklić , N. (eds.), Flora SR Srbije, 10: 255-256, Srpska Akademija Nauka i Umetnosti, Beograd. Čanak, M. 1976: Rod Pycreus P. Beauv. In: Josifović, M. (ed.), Flora SR Srbije, 8: 153-158, Srpska Akademija Nauka i Umetnosti, Beograd. Diklić, N. 1975: Rod Ornithogalum L. In: Josifović, M. (ed.), Flora SR Srbije, 7: 544-559, Srpska Akademija Nauka i Umetnosti, Beograd. Diklić, N. 1992: Rod Pulsatilla Adans. In: Sarić, M. (ed.), Flora SR Srbije, 1: 352-333, Srpska Akademija Nauka i Umetnosti, Beograd. Đorđević, V, Tomović, G, Lakušić, D. 2010: Epipactis purpurata Sm. (Orchidaceae) – A new species in the flora of Serbia. Archives of Biological Sciences, 62: 1175–1180. Đorđević, V., Jovanović, S., Stevanović, V. 2014. Dactylorhiza fuchsii (Orchidaceae), a new species in the flora of Serbia. Archives of Biological Sciences, 66 (3): 1227-1232. BIOLOGICA NYSSANA ● 11 (2) December 2020: 71-84 Jenačković Gocić et al. ● Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia 82 Đorđević, V., Lakušić, D., Jovanović, S., Stevanović, V. 2017. Distribution and conservation status of some rare and threatened orchid taxa in the central Balkans and the southern part of the Pannonian Plain. Wulfenia, 24: 143-162. Eleftheriadou, E., Raus, Th., Theodoropoulos K., Tsiripidis I. 2009: Sedum stefco Stef. In: Phitos, D., Constantinidis, Th., Kamari, G. (eds.), Vivlío erythrón dhedhoménon ton spánion & apeiloúmenon fitón tis Elládhas, 2 [The Red Data Book of Rare and Threatened Plants of Greece, 2], Hellenic Botanical Society. Gajić, M. 1973: Rod Galium L. In: Josifović, M. (ed.), Flora SR Srbije, 5: 476-498, Srpska Akademija Nauka i Umetnosti, Beograd. Gajić, M. 1988: Flora Nacionalnog parka Tara. ln: Gajić, M. (ed.), Flora Nacionalnog parka Tara, Šumarski fakultet, Univerzitet u Beogradu, Beograd. IUCN World Commission on Protected Areas and Europark Federation 2000. Guidelines for Protected Area Management Categories. Grafenau, Brussels. http://www.iucnredlist.org Jenačković, D., Dimitrijević, D., Ranđelović, V. 2010: Macrophytic flora and vegetation of the rivers Svrljiški and Beli Timok (Eastern Serbia). Biologica Nyssana, 1 (1-2): 23-26. Jenačković, D., Miljković, M., Mitrović, D., Ranđelović, V. 2015: Contribution to the knowledge of distribution of certain macrophytes, invasive and threatened species in Serbia. Biologica Nyssana, 6 (2): 59-65. Jenačković, D. 2017: Fitocenološko-ekološka studija močvarne vegetacije (Phragmitetea communis R. Tx. et Preising 1942) centralnog Balkana. PhD thesis. Univerzitet u Beogradu, Biološki fakultet. Beograd. Josifović, M. (ed.) 1970–1980: Flora SR Srbije, 1-10. Srpska Akademija Nauka i Umetnosti. Beograd. Jovanović, B. 1986: Typha shuttleworthii Koch & Sonder. In: Sarić, M., Diklić, N. (eds.), Flora SR Srbije, 10: 256, Srpska Akademija Nauka i Umetnosti, Beograd. Király, G. (ed.) 2007: Vörös Lista: A magyarországi edényes flóra veszélyeztetett fajai [Red List of the Vascular Flora of Hungary]. Saját kiadás, Sopron. Kozłowska, K., Nobis, A., Nobis, M. 2011: Typha shuttleworthii (Typhaceae), new for Poland. Polish Botanical Journal, 56 (2): 299-305. Niketić, M., Tomović, G. 2008: Survey of some rare and endangered plants in Serbia with new chorological data. Bulletin of the Natural History Museum, 1: 113-148. Niketić, M., Perić, R., Škondrić, S. 2009: Cerastium subtetrandrum (Caryophyllaceae), a new species to the flora of Serbia. Bulletin of the Natural History Museum, 2: 83-94. Nikolić, V., Sigunov, A., Diklić, N. 1986: Dopuna flori SR Srbije novim podacima o rasprostranjenju biljnih vrsta. In: Sarić, M., Diklić, N. (eds.), Flora SR Srbije, 10: 259-336, Srpska Akademija Nauka i Umetnosti, Beograd. Nikolić, T., Topić, J. 2005: Crvena knjiga vaskularne flore Hrvatske. Ministarstvo kulture, Državni zavod za zaštitu prirode. Novaković-Vuković, M. R. 2015: Florističke karakteristike šuma crnog i belog bora na serpentinitu i peridotitima u zapadnoj i centralnoj Srbiji. PhD thesis. Univerzitet u Beogradu, Šumarski fakultet. Beograd. Panjković, B. 2005: Akvatična i semiakvatična vegetacija Apatinskog i Monoštorskog rita. PhD thesis. Univerzitet u Novom Sadu, Prirodno- matematički fakultet. Novi Sad. Panjković, B., Perić, R., Stojšić, V., Batanjski, V. 2012: New data on the distribution of Ranunculus polyphyllus Waldst. & Kit. ex Willd. in Serbia. Archieves of Biological Sciences, 64 (2): 715 - 720. Pavlović, Z. 1951: Vegetacija planine Zlatibora. Zbornik radova Instituta za ekologiju i biogeografiju Srpske akademije aauka, 2: 115-182. Pavlović, Z. 1955: O pašnjačkoj i livadskoj vegetaciji centralnog dela Kopaonika. Glasnik Prirodnjačkog muzeja srpske zemlje, B 7 (1): 47-76. Pavlović, Z. 1974: Livadska vegetacija na serpentinskoj podlozi brdsko-planinskog područja Srbije. Glasnik Prirodnjačkog muzeja u Beogradu, B29: 29-40. Perić, R., Stojšić, V., Rilak, S., Škondrić, S. 2016: The account of Elatine ambigua Wight, E. triandra Schkuhr and E. hungarica Moesz collected in Vojvodina (Serbia). Bulletin of the Natural History Museum, 9: 81-93. Petrova, A., Vladimirov, V. (eds.) 2009: Red List of Bulgarian vascular plants. Phytologia Balcanica, 15 (1): 63-94. Petrova, A., Vladimirov, V. 2010: Balkan endemics in the Bulgarian flora. Phytologia Balcanica, 16 (2): 293-311. BIOLOGICA NYSSANA ● 11 (2) December 2020: 71-84 Jenačković Gocić et al. ● Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia 83 Petrović, B., Ranđelović, V., Zlatković, B. 2007: Flora and vegetation of Krupačko Blato swamp in eastern Serbia. Proceeding of the 9th Symposium on Flora of Southeastern Serbia and Neighbouring Regions, Niš, 63-72. Polić, D. 2006: Florističko-fitocenološko prouča- vanje Labudovog okna. Zadužbina Andrejević, Beograd. Popiela, A., Łysko, A., Molnár, A. 2013: Recent distribution of the Euro-Siberian-sub-Mediterranean species Elatine alsinastrum L. (Elatinaceae). Acta Botanica Croatica, 72 (2): 375-386. Popović, I. 2005: Vaskularna flora Divčibara. Magistarska teza. Univerzitet u Beogradu, Biološki fakultet. Beograd. Prlić, D. 2015: Novo nalazište nedovoljno poznate vrste Elatine alsinastrum L. (Elatinaceae) u Hrvatskoj. Glasnik Hrvatskog botaničkog društva, 3 (3): 41-46. Purger, D. 1993: Vegetacija u okolini Doroslova (zapadna Bačka). Magistarski rad. Univerzitet u Novom Sadu, Prirodno-matematički fakultet. Novi Sad. Radulović, S. 2005: Ekologija i disribucija akvatičnih fitocenoza Carske bare u GIS tematskom modelu. PhD thesis. Univerzitet u Novom Sadu, Prirodno-matematički fakultet. Novi Sad. Rakonjac, Lj. 2002: Šumska vegetacija i njena staništa na Pešterskoj visoravni kao osnova za uspešno pošumljavanje. PhD thesis. Univerzitet u Beogradu, Šumarski fakultet. Beograd. Ranđelović, V. 1999: Typha shuttleworthii Koch & Sonder. In: Stevanović, V. (ed.), Crvena knjiga flore Srbije, 1: 384–386, Ministarstvo za životnu sredinu Republike Srbije, Biološki fakultet Univerziteta u Beogradu, Zavod za zaštitu prirode Republike Srbije, Beograd. Ranđelović, V., Zlatković, B., Jušković, M. 2002: Astragalus wilmottianus Stoj. a new species of the Serbian flora. Proceeding of the 7th Symposium on Flora of Southeastern Serbia and Neighboring Regions, Dimitrovgrad, 1-4. Ranđelović, V., Zlatković, B., Jušković, M. 2005: Analiza korovske flore jugoistočne Srbije. Proceeding of 8th Symposium on Flora of Southeastern Serbia and Neighbouring Regions, Niš, 47-60. Ranđelovć, V., Matejić, J., Zlatković, B. 2007: Flora i vegetacija Batušinačkih bara kod Niša. 9th Symposium on Flora of Southeastern Serbia and Neighbouring Regions, Niš, 19-40. Ranđelović, V., Zlatković, B. 2010: Flora i vegetacija Vlasinske visoravni. Univerzitet u Nišu, Prirodno-matematički fakultet. Niš. Schnittler, M., Günther, K. F. 1999: Central European vascular plants requiring priority conservation measures – an analysis from national Red Lists and distribution maps. Biodiversity and Conservation, 8: 891-925. Stanković, Ž., Borišev, M., Simić, S., Vučković, M., Igić, R., Vidović, M., Miljanović, B. 2009: Macrophytes of the Grlište reservoir (Serbia): fifteen years after its establishment. Archives of Biological Sciences, 61 (2): 267-278. Stevanović, V., Sinžar-Sekulić, J., Stevanović, B. 2004: Expansion of the adventive species Paspalum paspaloides (Michx) Schribner, Echinochloa oryzoides (Ard.) Fritsch and Cyperus strigosus L. in the Yugoslav part of the Danube reservoir (km 1090-1075). In Proceedings 35th IAD Conference, Limnological reports, Novi Sad, Serbia and Montenegro, 399-405. Stevanović, V., Tan, K., Tomašević, M., Uotila, P. 2005: The occurrence of Cyperus strigosus (Cyperaceae) in Serbia and Montenegro. Phytologia Balcanica, 11 (2): 137-138. Stojanović, S., Butorac, B., Vučković, M., Stanković, Ž., Žderić, M., Kilibarda, P., Radak, Lj. 1994: Biljni svet kanala Vrbas - Bezdan. Univerzitet u Novom Sadu, Prirodno-matematički fakultet. Novi Sad. Stojanović, V., Petrović, S., Kovačević, J., Stojanović, D., Bjedov, I. 2017: Heracleum sosnowskyi Manden. (Apiaceae): A new invasive species in the flora of Serbia. Glasnik Šumarskog fakulteta, 116: 215-220. Šturc, B. 2014: Prirodna flora Subotičko-Horgoške peščare i pitanja njene zaštite. Gradski muzej Subotice. Subotica. Tatić, B., Veljović, V., Petković, B., Stefanović, M., Radotić, S. 1988: Ass. Lathyreto-Molinietum coeruleae - nova zajednica livadske vegetacije sa Pešterske visoravni - jugozapadna Srbija. Glasnik Instituta za botaniku i Botaničke bašte Univerziteta u Beogradu, 12: 31-38. Tomović, G., Ranđelović, V., Niketić, M., Vukojičić, S., Zlatković, B. 2003: New distribution data of some pontic and submediterranean plant species in Serbia. Archives of Biological Sciences, 55 (1-2): 45-54. Tomović, G., Vukojičić, S., Niketić, M., Lakušić, D. 2007: New chorological data on some threatened BIOLOGICA NYSSANA ● 11 (2) December 2020: 71-84 Jenačković Gocić et al. ● Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia and rare plants in Serbia. Archives of Biological Sciences, 59 (1): 63-73. Tomović, G., Zlatković, B., Niketić, M., Perić, R., Lazarević, P., Duraki, Š., Stanković, M., Lakušić, D., Anačkov, G., Knežević, J., Szabados, K., Krivošej, Z., Prodanović, D., Vukojičić, S., Stojanović, V., Lazarević, M., Stevanović, V. 2009: Threat status revision of some taxa from “The Red Data Book of Flora of Serbia 1”. Botanica Serbica, 33 (1): 33–43. Tomović, G., Zlatković, B., Lazarević, M., Niketić, M. 2016. Viola orbelica (Violaceae), new species for the flora of Serbia. Bulletin of the Natural History Museum, 9: 67-79. Tomović, G., Sabovljević, M., Đokić, I., Petrović, P., Đorđević, V., Lazarević, P., Mašić, E., Barudanović, S., Ştefănuţ, S., Niketić, M., Butorac, B., Pantović, J., Hajrudinović- Bogunić, A., Bogunić, F., Kabaš, E., Vukojičić, S., Kuzmanović, N., Đurović, S., Buzurović, U. 2020: New records and noteworthy data of plants, algae and fungi in SE Europe and adjacent regions, 2. Botanica Serbica, 44 (2): 251-259. Topić, J., Ozimec, S. 2001: Typha laxmannii Lepechin (Typhaceae), a new species in Croatian flora. Natura Croatica: Periodicum Musei Historiae Naturalis Croatici, 10 (1): 61-65. Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M., Webb, D. A. (eds.) 1964–1980: Flora Europaea, 1–4. Cambridge University Press. London. Veljić, M., Marin, P. D., Krivošej, Z., Ljubić, B. 2006: Vascular flora of the Uvac river gorge in Serbia. Archives of Biological Sciences, 58 (2): 125- 133. Verloove, F. 2014: A conspectus of Cyperus s.l. (Cyperaceae) in Europe (incl. Azores, Madeira and Canary Islands), with emphasis on non-native naturalized species. Webbia, 69 (2): 179-223. Zlatković, B., Ranđelović, V., Ranđelović, N. 1993: Građa za floru jugoistočne Srbije. 3. Simpozijum o flori jugoistočne Srbije, Zbornik radova, 1. Flora i vegetacija, Leskovac-Pirot, 95-109. Zlatković, B., Ranđelović, V. 1995: Distribution and ecology of Sedum species (Crassulaceae) in Serbia: I. Sedum tuberiferum Stoj. et Stef., S. stefco Stef. and S. aetnense Tineo. Ekologija, 31 (1): 65-71. Zlatković, B., Ranđelović, V., Jušković, M. 2007: Reports 136-138. In: Vladimirov, V., Dane, F., Stevanović, V., Tan, K. (eds.): New floristic records in the Balkans: 6. Phytologia Balcanica, 13 (3): 433- 455. Zlatković, B., Bogosavljević, S. 2014: Report on the new floristic data from Serbia. Biologica Nyssana, 5 (2): 123-129. 84 BIOLOGICA NYSSANA ● 11 (2) December 2020: 71-84 Jenačković Gocić et al. ● Insight into the chorology of some endangered, rare and potentially invasive plant species in Serbia