REINWARDTIA 2018 17 (2) ISSN 0034 – 365 X | E-ISSN 2337 − 8824 | Accredited 792/AU3/P2MI-LIPI/04/2016 A JOURNAL ON TAXONOMIC BOTANY, PLANT SOCIOLOGY AND ECOLOGY REINWARDTIA A JOURNAL ON TAXONOMIC BOTANY, PLANT SOCIOLOGY AND ECOLOGY Vol. 17 (2): 87 – 154, December 18, 2018 Chief Editor Kartini Kramadibrata (Mycologist, Herbarium Bogoriense, Indonesia) Editors Dedy Darnaedi (Taxonomist, Herbarium Bogoriense, Indonesia) Tukirin Partomihardjo (Ecologist, Herbarium Bogoriense, Indonesia) Joeni Setijo Rahajoe (Ecologist, Herbarium Bogoriense, Indonesia) Marlina Ardiyani (Taxonomist, Herbarium Bogoriense, Indonesia) Himmah Rustiami (Taxonomist, Herbarium Bogoriense, Indonesia) Lulut Dwi Sulistyaningsih (Taxonomist, Herbarium Bogoriense, Indonesia) Topik Hidayat (Taxonomist, Indonesia University of Education, Indonesia) Eizi Suzuki (Ecologist, Kagoshima University, Japan) Jun Wen (Taxonomist, Smithsonian Natural History Museum, USA) Barry J. Conn (Taxonomist, School of Life and Environmental Sciences, The University of Sydney, Australia) David G. Frodin (Taxonomist, Royal Botanic Gardens, Kew, United Kingdom) Graham Eagleton (Wagstaffe, NSW, Australia) Secretary Ruslan Bukhori Layout Liana Astuti Illustrators Subari Wahyudi Santoso Anne Kusumawaty Correspondence on editorial matters and subscriptions for Reinwardtia should be addressed to: HERBARIUM BOGORIENSE, BOTANY DIVISION, RESEARCH CENTER FOR BIOLOGY– INDONESIAN INSTITUTE OF SCIENCES CIBINONG SCIENCE CENTER, JLN. RAYA JAKARTA – BOGOR KM 46, CIBINONG 16911, P.O. Box 25 CIBINONG INDONESIA PHONE (+62) 21 8765066; Fax (+62) 21 8765062 E-MAIL: reinwardtia@mail.lipi.go.id http://e-journal.biologi.lipi.go.id/index.php/reinwardtia Cover images: Canthiumera robusta K.M.Wong & X.Y.Ng, spec. nov. Top left: leafy branch with inflorescences; note also keeled stipules. Top right: flower with tufts of pale moniliform hairs visible opposite corolla lobes. Below left: fruits. Below right: pyrenes. Photos: Ang Wee Foong (top left) and X.Y. Ng (remaining images). The Editors would like to thank all reviewers of volume 17(2): Andrew Powling, School of Biological Sciences, University of Portsmouth, Portsmouth, United Kingdom George Argent, Royal Botanic Garden Edinburgh, Edinburgh, United Kingdom Joan Pereira, Forest Research Centre, Sandakan, Sabah, Malaysia Jun Yokoyama, Dept. of Biology, Faculty of Science,Yamagata University, Yamagata, Japan Khoon Meng Wong, Singapore Botanic Gardens, Singapore Kongkanda Chayamarit, Queen Sirikit Botanic Garden, P.O. Box 7, Mae Rim, Chiang Mai, Thailand REINWARDTIA Vol. 17. No. 2. pp: 97‒100 97 RHODODENDRON MEAGAII, A NEW SPECIES OF RHODODENDRON SUBGENUS VIREYA (ERICACEAE) FROM PAPUA, INDONESIA Received 04 May, 2018; accepted 24 September, 2018 YASPER MICHAEL MAMBRASAR Herbarium Bogoriense, Botany Division, Research Center for Biology-LIPI, Cibinong Science Center, Jln. Raya Jakarta-Bogor Km. 46, Cibinong 16911, Bogor, Indonesia. Email: michael_mambrasar@yahoo.com PRIMA W. K. HUTABARAT Center for Plant Conservation Bogor Botanic Garden-LIPI. Jln. Ir. H. Juanda No. 13, Bogor, 16122, Indonesia. Email: hutabaratpwk@gmail.com ABSTRACT MAMBRASAR, Y. M. & HUTABARAT, P. W. K. 2018. Rhododendron meagaii, a new species of Rhododendron subgenus V ireya (Ericaceae) from Papua, Indonesia. Reinwardtia 17(2): 97‒100. ‒‒ Rhododendron meagaii, is described and illustrated as a new species in subgenus V ireya (Ericaceae) from Mount Salju, District of Abenaho, Yalimo Regency, Papua Province, Indonesia. Characters distinguishing this new species from related species are discussed. Key words: District of Abenaho, New Guinea, new species, Papua Province, Rhododendron meagaii. ABSTRAK MAMBRASAR, Y. M. & HUTABARAT, P. W. K. 2018. Rhododendron meagaii, jenis baru Rhododendron submarga V ireya (Ericaceae) dari Papua, Indonesia. Reinwardtia 17(2): 97‒100. ‒‒ Rhododendron meagaii, dipertelakan dan digambar sebagai jenis baru pada submarga V ireya (Ericaceae) dari Gunung Salju, Distrik Abenaho, Kabupaten Yalimo, Provinsi Papua, Indonesia. Didiskusikan pula karakter yang membedakan jenis baru ini dengan jenis yang terdekat. Kata kunci: Distrik Abenaho, jenis baru, Provinsi Papua, Pulau Nugini, Rhododendron meagaii. INTRODUCTION New Guinea is a major center diversity of Rhododendron subgenus Vireya in the Malesia region with more than three times the number recorded compared with the next richest island: Borneo (Argent, 2015). The number of species in western New Guinea is greater than in the Eastern part (Papua New Guinea). Argent (2015) recorded 121 species in western New Guinea compared with only 85 species in the eastern part. Rhododendron is well recorded in New Guinea because of its impressive flowers (Kartikasari et al., 2013). In 2016, during fieldwork in Yalimo regency, Papua Province, the team from LIPI discovered a Rhododendron that appeared to be new. This species is quite distinct from any other Rhododendron species known from western New Guinea. However, there were strong superficial similarities to Rhododendron diesianum Schltr. from eastern New Guinea. On close examination the scale structure and disposition appeared to be sufficiently distinct to consider this new collection as belonging to a different, undescribed species. Rhododendron meagaii Mambrasar & Hutabarat spec. nov. — Type: Indonesia, Papua Province, Yalimo Regency, Abenaho District, Mount Salju, 23 May 2016, Michael Mambrasar 239 (Holotype: BO! iso: E! K!). Figs. 1 & 2. Diagnosis. Distinct in section Hadranthe Schltr . in having the combination of characters: elliptic leaves, long stalked dendroid scales, a glabrous corolla and stamens of irregular lengths. Shrub or small tree to ca. 2 m, twigs densely scaly, ca. 2‒3 mm in diameter, internodes 2‒6 cm. Leaves in tight pseudowhorls, 3‒5 together, spreading. Blade 27‒55 × 7‒19 mm, elliptic to narrowly elliptic; base cuneate; apex obtuse to acute occasionally apiculate; margin entire, revolute; when young: densely covered with reddish-brown scales, quickly becoming glabrescent adaxially more slowly abaxially. Scales dendroid, with highly divided arms and long slender stalks, from low persistent epidermal tubercles. Mid-vein impressed above and strongly prominent beneath; lateral veins obscure. Petiole REINWARDTIA 98 [VOL.17 Fig. 1. Rhododendron meagaii Mambrasar & Hutabarat, spec. nov. A. Branch showing habit of flowers. B. Corrolla opened out. C. Flower. D. Pistil. E. Stamen. From Michael Mambrasar 239 (BO), drawing by Wahyudi Santoso (BO). MAMBRASAR & HUTABARAT : Rhododendron meagaii, a new species from Papua 2018] 99 5‒7 × 1 mm, densely stellate scaley, grooved. Flower bud ca. 10 × 4 m, broadly ellipsoid, the basal bracts spreading, all other bracts appressed. Bracts: the outermost triangular, caudate, densely scaly outside and along the margins; inner bracts to ca. 7 × 8 mm, ovate to obovate, apiculate, membranous, scaly distally abaxially and along the margins. Bracteoles to ca. 18 × 1 mm, linear slightly broadened near the apex, with a few marginal scales. Flowers spreading 4‒5 together in open umbels. Pedicels: 9‒11 × 0.5 mm, densely brown stellate scaly without simple hairs. Calyx ca. 2 mm diameter, disk-shaped, the margin undulate, scaly outside, without simple hairs. Corolla zygomorphic, purple, without scent; tube ca. 20 × 4 mm, curved, glabrous both outside and inside; lobes ca. 8 × 6 mm, subcircular, glabrous. Stamens 10, unequel in length, slightly exserted, loosely clustered on the upper side of the mouth; filaments 20‒22 mm long, sparsely short hairy in the proximal 2/3, glabrous distally. Anthers oblongoid, ca. 2 mm long. Disk densely short hairy on the upper side. Ovary narrowly fusiform, 6‒7 mm long, densely scaly; style ca. 1‒1.2 cm long, shortly patently hairy in the proximal 4 mm and glabrous distally. Stigma ca. 2 mm in diameter. Fruit cylindrical, densely scaly when young. Distribution. Known only fr om the type locality. Ecology. Mossy for est and open montane shrubbery. Growing with Dicranopteris sp. altitude 1,100 m asl. Etymology. Name in honour of Or ganes Meaga († ), Kebun Raya Biologi Wamena technician who helped in collecting this species. Phenology. Rhododendron meagaii was observed in flower when it was collected at the middle of May 2016. Later it was reported that the living specimen at the nursery of Kebun Biologi Wamena in Wamena was flowering and fruiting in early June 2017. Conservation status. Not assessed. Note. This species is clearly in section Hadranthe Schltr. displaying the characteristic dendroid scales on distinct epidermal tubercles of that section. It keys to Rhododendron prainianum in Argent (2015), but lacks the distinctive linear leaves of that species. It appears to be most similar to R. diesianum Schltr. which occurs much further to the east in New Guinea but that species has scales which are sessile or on much shorter stalks, and has a laxly scaly corolla tube outside. ACKNOWLEDGEMENTS The authors would like to thank (1) KSK Kebun Biologi Wamena for the opportunity to join the Fig. 2. Rhododendron meagaii Mambrasar & Hutabarat, spec. nov. A & B Habit and Flower. Photo taken from type location by Y. Michael Mambrasar (BO). C. Cultivated at Biology Botanical Garden in Wamena (Kebun Raya Biologi Wamena). Photo by Dede Nurul Iman. A B C REINWARDTIA 100 [VOL.17 exploration to Yalimo Regency, (2) Dr. Lina Susanti Juswara, Organes Meaga and Lesman Kogoya for helping to collect the spesimens, (3) the Director of Lorentz National Park and the government of Yalimo regency for granting permission to collect specimens, (4) Dr. George Argent for helpful discussions, (5) Wahyudi Santoso for preparing illustration and (6). Herbarium Bogoriense (BO) for permission for observation in systematic laboratory, (7) Dede Nurul Iman for the pictures and phenology information of the living specimen in Wamena. REFERENCES ARGENT, G. 2015. Rhododendrons of subgenus Vireya 2 nd ed. 1‒454. Royal Botanic Garden, Edinburgh. KARTIKASARI, E. N., MARSHALL, A. J. & BEEHLER, B. M. 2013. Ekologi Papua. 2 nd ed. Yayasan Obor Indonesia dan Conservation Indonesia, Jakarta. SLEUMER, H. 1966. Rhododendron. In: VAN STEENIS, C. G. G. J. (Ed.). Flora Malesiana I (6): 474–668. Wolters-Noordhoff, Groningen. INSTRUCTION TO AUTHORS Scope. 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Author(s) should send the preferred running title of the article submitted. Every manuscript will be sent to two blind reviewers. Identification key. Taxonomic identification key should be pr epar ed using the aligned couplet type. Nomenclature. Str ict adher ence to the Inter national Code of Nomenclatur e is obser ved, so that taxonomic and nomenclatural novelties should be clearly shown. English description for new taxon proposed should be provided and the herbaria where the type specimens area deposited should be presented. Name of taxon in taxonomic treatment should be presented in the long form that is name of taxon, author’s name, year of publication, abbreviated journal or book title, volume, number and page. Map/line drawing illustration/photograph. Map, line dr awing illustr ation, or photogr aph pr efer ably should be prepared in landscape presentation to occupy two columns. Illustration must be submitted as original art accompanying, but separated from the manuscript. The illustration should be saved in JPG or GIF format at least 350 pixels. Legends or illustration must be submitted separately at the end of the manuscript. References. Bibliogr aphy, list of liter atur e cited or r efer ences follow the Har var d system as the following examples. Journal : KRAENZLIN, F. 1913. Cyrtandraceae novae Philippinenses I. Philipp. J. Sci. 8: 163–179. MAYER, V., MOLLER, M., PERRET, M. & WEBER, A. 2003. Phylogenetic position and generic differentiation of Epithemateae (Gesneriaceae) inferred from plastid DNA sequence data. A merican J. Bot. 90: 321–329. Proceedings : TEMU, S. T. 1995. Peranan tumbuhan dan ternak dalam upacara adat “Djoka Dju” pada suku Lio, Ende, Flores, Nusa Tenggara Timur. In: NASUTION, E. (Ed.). Prosiding Seminar dan Lokakarya Nasional Etnobotani II. LIPI & Perpustakaan Nasional: 263–268. (In Indonesian). SIMBOLON, H. & MIRMANTO, E. 2000. Checklist of plant species in the peat swamp forests of Central Kalimantan, Indonesia. In: IWAKUMA, T., INOUE, T., KOHYAMA, T., OSAKI, M., SIMBOLON, H., TACHIBANA, H., TAKAHASHI, H., TANAKA, N., YABE, K. (Eds.). Proceedings of the International Symposium on: Tropical Peatlands. Pp.179 ‒ 190. Book : RIDLEY, H. N. 1923. Flora of the Malay Peninsula 2. L. Reeve & Co. Ltd, London. Part of Book : BENTHAM, G. 1876. Gesneriaceae. In: BENTHAM, G. & HOOKER, J. D. Genera Plantarum 2. Lovell Reeve & Co., London. Pp. 990–1025. Thesis : BAIRD, L. 2002. A Grammar of Kéo: An Austronesian Language of East Nusantara. Australian National University, Canberra. [PhD. Thesis] . Website : http://www.nationaalherbarium.nl/fmcollectors/k/KostermansAJGH.html. 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(+ 62) 21 8765066; Fax (+62) 21 8765062 Email: reinwardtia@mail.lipi.go.id REINWARDTIA Vol. 17. No. 2. 2018 CONTENTS LAODE ALHAMD. Ecological study of the arrowroot (Tacca leontopetaloides (L.) Kuntze) at Karimunjawa National Park (KNP), Central Java ………………………………………………………….…………………………….……. 87 YASPER MICHAEL MAMBRASAR & PRIMA W. K. HUTABARAT. Rhododendron meagaii, a new species of Rhododendron subgenus Vireya (Ericaceae) from Papua, Indonesia ……...………………..……………………….. 97 K. M. WONG, RIDHA MAHYUNI, XIN YI NG & LOUISE NEO. Flora of Singapore Precursors, 8. Systematy of the new Southeast Asian genera Canthiumera and Dibridsonia (Rubiaceae: V anguerieae), with notes on plant architecture and reproductive ecology …………..………………………………………………………………………………... 101 ANDREW POWLING. An assessment of present plant diversity on the Natewa Peninsula, Vanua Levu, Fiji …….. 125 ASEP SADILI, KUSWATA KARTAWINATA, HERWASONO SOEDJITO & EDY NASRIADI SAMBAS. Tree species diversity in a pristine montane forest previously untouched by human activities in Foja Mountains, Papua, Indonesia ………………………………………………………………………………………….…………….…... 133 Reinwardtia is a LIPI accredited Journal (792/AU3/P2MI-LIPI/04/2016) http://e-journal.biologi.lipi.go.id/index.php/reinwardtia Herbarium Bogoriense Botany Division Research Center for Biology – Indonesian Institute of Sciences Cibinong Science Center Jln. Raya Jakarta − Bogor, Km 46 Cibinong 16911, P.O. Box 25 Cibinong Indonesia 0. FINAL front cover, cover dalam, reviewer Reinwardtia 17(1)_Edit Himmah 2 FINAL Michael Mambrasar et al_edit Himmah (97-100) 0. FINAL Daftar Isi Reinwardtia 17(2)_Edit Himmah