A JOURNAL ON TAXONOMIC BOTANY, PLANT SOCIOLOGY AND ECOLOGY REINWARDTIA A JOURNAL ON TAXONOMIC BOTANY, PLANT SOCIOLOGY AND ECOLOGY Vol. 13(3): 221 — 3 1 5 , April 11, 2012 Chief Editor KARTINI KRAMADIBRATA Editors DEDYDARNAEDI (INDONESIA) TUKTRIN PARTOMIHARDJO (INDONESIA) JOENI SETIJO RAHAJOE (INDONESIA) TEGUHTRIONO (INDONESIA) MARLINAARDIYANI (INDONESIA) EIZI SUZUKI (JAPAN) JUN WEN (UNITED STATE OF AMERICA) Managing editor HIMMAH RUSTIAMI Secretary ENDANG TRI UTAMI Lay out DEDEN SUMIRATHIDAYAT Illustrators SUBARI WAHYUDI SANTOSO ANNE KUSUMAWAIY Reviewers BRYAN SIMON (AUSTRALIA), EVE J. LUCAS (UNITED KINGDOM), J.F.VELDKAMP (NETHERLANDS), LAUR- ENCE SKOG (USA), PIETER BAAS (NETHERLANDS), RUTH KIEW (MALAYSIA), ROBERT J. SORENG (USA), HE- LENA DUISTERMAAT (NETHERLANDS), LYN A. CRAVEN (AUSTRALIA), RUGAYAH (INDONESIA), MARK HUGHES (UNITED KINGDOM), MARTIN CALLMANDER (USA), PETER C. VAN WELZEN (NETHERLANDS), WAYNE TAKEUCHI (USA), NOBUYUKI FUKUOKA (JAPAN). Correspondence on editorial matters and subscriptions for Reinwardtia should be addressed to: HERBARIUM BOGORIENSE, BOTANY DIVISION, RESEARCH CENTER FOR BIOLOGY-LIPI, CIBINONG 16911, INDONESIA E-mail: reinwardtia@mail.lipi.go.id REINWARDTIA Vol 13, No 3, pp: 255 − 262 255 NEW VARIETY, RECORDS & DISCOVERIES OF SOME SPECIES OF PANDANUS (PANDANACEAE) IN SUMATRA & KALIMANTAN, INDONESIA Received May 14, 2010; accepted December 27, 2011 ARY PRIHARDHYANTO KEIM Herbarium Bogoriense, Botany Division, Research Center for Biology-LIPI, Cibinong Science Center, Jl. Raya Bogor−Jakarta Km. 46, Cibinong 16911, Bogor, Indonesia. E-mail: arypkeim@yahoo.com. ABSTRACT KEIM, A.P. 2012. New variety, records & discoveries of some species of Pandanus (Pandanaceae) in Sumatra & Kalimantan, Indonesia. Reinwardtia 13(3): 255−262. — This current study shows the presence of a new variety of Pandanus korthalsii Solms from Bengkulu, P. korthalsii Solms var. bengkuluensis A.P. Keim and records the presence of three species from Pandanus previously unknown to Sumatra and Borneo, particularly Kalimantan: Pandanus irregularis Ridl., P. labyrinthicus Kurz, and P. stelliger Ridl. The result of this study also indicates that in Sumatra the coastal-inhabitant P. labyrinthicus can also be found further inland from its previously known habitat. Keywords: Borneo, Kalimantan, Pandanaceae, Pandanus, Sumatra. ABSTRAK KEIM, A.P. 2012. Varietas baru, catatan dan penemuan beberapa jenis Pandanus (Pandanaceae) di Sumatera & Kalimantan, Indonesia. Reinwardtia 13(3): 255−262. — Hasil kajian terbaru ini mencatat satu varietas baru dari Pandanus korthalsii Solms. asal Bengkulu, P. korthalsii Solms var. bengkuluensis A.P. Keim dan juga merekam kehadiran tiga Pandanus yang sebelumnya tidak diketahui di Sumatera dan Kalimantan: Pandanus irregularis Ridl., P. labyrinthicus Kurz, dan P. stelliger Ridl. Hasil kajian ini juga menunjukkan bahwa di Sumatera P. labyrinthicus merupakan jenis yang hidup di pesisir pantai juga dapat ditemukan jauh di pedalaman. Kata kunci: Borneo, Kalimantan, Pandanaceae, Pandanus, Sumatera. INTRODUCTION Sumatra, despite being the second most explored island in the Malay Archipelago after Java, the pandan flora in this island is still vaguely known. The situation is worsened by the fact that practically there has been no detailed publication on the pandan flora of Sumatra since “Unumerazione delle Pandanaceae” (Martelli, 1910, 1913, 1914), where several new species were described. On the contrary, the pandan flora of Borneo is better known at least through two special publications by Stone (1970 for Freycinetia; 1993 for Pandanus). Although fine publications, most of the species described were from Sarawak and Sabah. Little was known then from the Indonesian part of Borneo (i.e. Kalimantan). After the last work by Stone, the study on the pandan flora of Sumatra and Kalimantan has been resumed by Keim et al. (2006), Keim and Mahendra (2008) and Keim (2009), in which several new species of Freycinetia, new records and rediscovery of the illusive P. aristatus were published. The current study is based on herbarium specimens available at Herbarium Bogoriense (BO) and the result adds new information to the pandan flora of Sumatra and Kalimantan including the presence of a new variety of Pandanus korthalsii Solms from Bengkulu in southern Sumatra, namely P. korthalsii Solms var. bengkuluensis A.P. Keim and the records the presence of three species from the genus Pandanus previously unknown to Sumatra and Borneo, particularly Kalimantan: P. irregularis Ridl., P. labyrinthicus Kurz, and P. stelliger Ridl. The result of this study also indicates that in Sumatra the coastal-inhabitant P. labyrinthicus can also be found further inland from its previously known habitat. TAXONOMIC ENUMERATION 1. PANDANUS IRREGULARIS Ridl. –– Fig. 1. Notes. Prior to this current study P. irregularis was known only from the limestone area of Batu Bau- Sungai Ketah, Kelantan (Ridley, 1925) and Gua Tipus (Tikus?), Pahang in the Malay Peninsula (St. John, 1963). The discovery of the same species in Sijunjung, Sumatra is thus a new record. P. irregularis is well known as a species that prefers REINWARDTIA 256 [VOL.13 Fig. 1. Pandanus irregularis Ridl. from J. Dransfield 3968 (BO!) showing an infructescence consists of four cephalia, in which each cephalium is composed of several knobbly phalanges. Each phalange is observed with two stig- mas arranged in a single straight of row. Photo: A.P. Keim. 2012] 257 KEIM: Discoveries of Pandanus in Sumatra & Kalimantan, Indonesia a limestone-based soil habitat. St. John (1963) even described this species as the common pandan on the limestone. Sijunjung is also well known for the distinctive limestone-based soil (Laumonier 1997) as featured by the striking string of astonishing karst hills that characterize the central part of West Su- matra Province, which stretched from Payakumbuh to Sijunjung. Gunung Putih is one of the hills in mountainous Sijunjung and the name itself means White Mountain in Indonesian, which clearly indi- cates the dominant type of soil there, chalk or lime- stone. In other word, Sijunjung shares the same habitat with both the type locality of P. irregularis and collection locality of specimen mentioned by St. John (1963). The identification of a specimen collected from Sijunjung, J. Dransfield 3968 (Figure 1) as P. irregularis is based on the observa- tion and field note that indicate this specimen as having an infructescence consisting of four dark green cephalia, in which each cephalium is com- posed of several rather knobbly phalanges. Each phalange is observed with two stigmas arranged in a single straight of row, thus evidently shows that it is a member of the subgenus Rykia. However, P. irregularis straightforwardly differs from the other more famous member of the sub genus, the gigantic and beach-dweller P. dubius, in which P. dubius possesses an infructescence with only a single, mas- sive and globose cephalium. Specimen examined. Indonesia, Sumatra, West Sumatra, Sijunjung, Gunung Putih, Muaro Kulampi, 27 Feb. 1974, J. Dransfield 3968 (BO!). 2. Pandanus korthalsii Solms var. bengkuluensis A.P. Keim var. nov. –– Fig. 2. Pandanus korthalsii Solms similis sed cephalium ellipsoideus et longioribus (4.5–6.5 cm); stigmata conspicue rostrata et longioribus (50–60 mm). –– Typus: J. Dransfield 3575 (BO!), Indonesia, Sumatra, Bengkulu, Km 12, on the road from Kepahiang to Bengkulu, 25 Aug. 1973. Slender, shrubby pandan, apparently clus- tered, 5 m tall. Stem slender, sparsely branched, diameter ca. 2 cm, pale brown, spiny. Leaves in a rosette, spirally arranged in three ranks (tristichous), ca. 75 cm long, ca. 2 cm wide, spines throughout margin, apex acumminate; adaxial surface green, adaxial ventral pleats minute; abaxial surface green, recurved spines absent. Infructescence terminal, interfoliar, 30–35 cm long, spicate, consisting of 3– 4 cephalia; peduncle 25.5–26 cm long, densely covered with red-brown tomentose; peduncular bracts caducous. Cephalia not uniform in sizes, the most basal part being the largest; each cephalium elongated ellipsoidal, 4.5–6.5 cm long, 2.8–3 cm wide, glaucous. Drupe elongated ellipsoidal, 1–1.2 cm long, ca. 0.5 cm wide; stigmatic remain sharp, obviously beaked, brown, 0.5–0.6 cm long. Etymology. After Bengkulu an Indonesian province in southern part of Sumatra, where the type was collected. Distribution. Known only from the type locality. Habitat. Lowland tropical rainforest on ridge top, hill of Dipterocarps forests at about 700 m altitude. Notes. The differences between this newly proposed variety and P. korthalsii Solms var. korthalsii are mainly in the shapes and dimensions of cephalia and drupes (Table 1). Apart from these four morphological characters, the two taxa are exceedingly similar. However, as the shape and dimension of cephalia in P. korthalsii var. korthalsii from Borneo (including the Anambas Islands) and Sumatra (North Sumatra) are surprisingly quite uniform, which are fairly globose (Table 1), the taxon from Bengkulu (Figure 2) are regarded here as a distinct from the widely distributed P. korthalsii var. korthalsii. Nonetheless, the differences are regarded insufficient to place the taxon from Bengkulu as a distinct species. Thus, Table 1. Morphological differences between P. korthalsii var. korthalsii and P. korthalsii var. bengkuluensis. Species Shape of cephalium Size of cephalium Size of drupe Length of stigma Pandanus korthalsii var. korthal- sii Fairly globose 3.5–4 by 2.5 cm 0.8 by 0.4 cm 0.1–0.2 cm Pandanus korthalsii var. bengku- luensis Elongated- ellipsoidal 4.5–6.5 by 2.8– 3 cm 1–1.2 by 0.5 cm 0.5–0.6 cm REINWARDTIA 258 [VOL.13 Fig. 2. Pandanus korthalsii Solms var. bengkuluensis A.P. Keim from J. Dransfield 3575 (holo. BO!) showing the elon- gated ellipsoidal cephalia and obvious beaked stigmatic remains. Photo: A.P. Keim. 2012] 259 KEIM: Discoveries of Pandanus in Sumatra & Kalimantan, Indonesia Fig. 3. Pandanus labyrinthicus Kurz from W. Meijer 2567 (BO!) collected from Tarakan Island, East Kalimantan, showing the slender habit, a spike infructescence composed of rounded-rather depressed and crowdedly ar- ranged drupes. Each drupe has ascending forked stigmatic remains. Photo: A.P. Keim. REINWARDTIA 260 [VOL.13 Fig. 4. Pandanus labyrinthicus Kurz from J. Dransfield 3964 (BO!) collected from Gunung Putih, Sijunjung, West Su- matra, showing slender habit, a spike infructescence composed of rounded-fairly depressed and crowdedly ar- ranged drupes. Each drupe has ascending forked stigmatic remains. Photo: A.P. Keim. 2012] 261 KEIM: Discoveries of Pandanus in Sumatra & Kalimantan, Indonesia Fig. 5. Pandanus stelliger Ridl. from G. Shea 28015 (BO!), showing a spike infructescence. Each drupe is with blunt and rather ascending star-shaped stigmatic remains. Photo: A.P. Keim. REINWARDTIA 262 [VOL.13 until the data from molecular analysis becomes available in this current study the taxon from Bengkulu is regarded as a new variety of P. korthalsii, P. korthalsii Solms var. bengkuluensis. Specimen examined. Indonesia, Sumatra, Bengkulu, Km 12, on the road from Kepahiang to Bengkulu, 25 Aug. 1973, J. Dransfield 3575 (holo. BO!; iso. L). 3. PANDANUS LABYRINTHICUS Kurz –– Figs. 3 & 4. Notes. Pandanus labyrinthicus was previously reported only from the type locality, which was in the west coast of Sumatra (see Warburg, 1900). The presence of this species outside Sumatra was briefly mentioned by Keim (2009). This study con- firms its presence in Borneo, particularly on Tara- kan Island (Figure 3). Pandanus labyrinthicus was previously known as a coastal species. It is interest- ing to underline that the specimen collected from the Gunung Putih, Sijunjung, West Sumatra (J. Dransfield 3964; Figure 4) grows further inland. Pandanus labyrinthicus is characterized by its slender habit, its spicate infructescence, in which each composed of rounded-rather depressed and compactly (i.e. crowdedly) arranged drupes. Each drupe has ascending forked stigmatic remains. This morphological character allows to clearly distinct the eastern Malesian P. labyrinthicus from another coastal slender clustered pandan, the western Malesian P. polycephalus, in which possesses blunt stigmatic remains. As previously discussed, the soil type in Sijunjung is predominantly limestone- based. This raises a question whether Sijunjung and vicinity used to be a coastal area. In other word, the presence of the coastal P. labyrinthicus might have been the reminiscence of Sijunjung geological past. A further study is essential. Specimens examined. Indonesia, Sumatra, West Sumatra, Sijunjung, Gunung Putih, Muaro Kulampi, 27 Feb. 1974, J. Dransfield 3964 (BO!); Borneo, East Kalimantan, Tarakan Island, 16 Dec. 1953, W. Meijer 2567 (BO!). 4. PANDANUS STELLIGER Ridl. –– Fig. 5. Notes. Pandanus stelliger was previously known only from the Malay Peninsula (Ridley, 1904; St. John, 1963). In the field P. stelliger is easily identified through the possession of a spike infructescence with each cephalium consists of drupes with blunt and fairly ascending star-shaped stigmatic remains. A specimen collected from Kali- mantan, G. Shea 28015 (Figure 5) possesses morphological characters that match with P. stelliger and it is identified here as belonging to that species; thus, a new record of P. stelliger in Borneo. Specimen examined. Indonesia, Borneo, West Kalimantan, Pontianak, Bentiang, Kampung Semakong, Gunung Sengkayu, 10 Nov. 1980, G. Shea 28015 (BO!). REFERENCES KEIM, A.P. 2009. Three new species of Feycinetia (Pandanaceae) from Kalimantan, Indonesia. Reinwardtia 13 (1): 15-20. KEIM, A.P; RUGAYAH; RUSTIAMI, H; SANTIKA, Y; ASMARAYANI, R; NURDIN & AMIR, M. 2006. Keanekaragaman Pandanaceae di Taman Nasional Bukit Baka Bukit Raya dan sekitarnya di Propinsi Kalimantan Barat. Laporan Teknik Pusat Penelitian Biologi- LIPI: 125-140. KEIM, A.P. & MAHENDRA, T. 2008. Flora pandan (Pandanaceae) Taman Nasional Bukit Barisan Selatan (TNBBS) wilayah Propinsi Lampung: Takso- nomi dan etnobotani. Laporan Teknik Pusat Penelitian Biologi-LIPI: 1124-1148. KURZ, S. 1866. Ann. Mus. Bot. Lugd. Batav. 2: 53. LAUMONIER, Y. 1997. The vegetation & physiography of Sumatra. Geobotany no. 22. Kluwer Academic Publ., Dordrecht. MARTELLI, U. 1910. Unumerazione delle Pandanaceae. I: Freycinetia. Webbia 3: 307-327. MARTELLI, U. 1913. Enumerazione delle Pandanaceae II. Pandanus. Webbia 4: 5-105. MARTELLI, U. 1914. Le specie e varietà nuove di Pandanus menzionate nella „Enumerazione delle Pandanaceae‟. Webbia 4: 399-435, t. 1-43. RIDLEY, H.N. 1904. Pandanaceae. J. Straits Branch Roy. Asiat. Soc. 41: 49-50. RIDLEY, H.N. 1925. The flora of the Malay Peninsula. Vol. 5: Monocotyledones, Gymnospermae & general indices. L. Reeve & Co., London. SOLMS, H. 1878. Monographia Pandanacearum. Linnaea 42: 1-110. ST. JOHN, H. 1963. Revision of the genus Pandanus Stickman: Part 15, Malayan species described by H.N. Ridley. Pacific Science 17 (3): 329-360. STONE, B.C. 1970. Materials for a monograph of Freycinetia Gaud. (Pandanaceae). VI. Species of Borneo. Gardens’ Bulletin Singapore 25 (2): 209- 233. STONE, B.C. 1993. Studies in Malesian Pandanaceae 21: The genus Pandanus in Borneo. Sandakania 2: 35 -84. WARBURG, O. 1900. (21 Dec.). Pandanaceae. In A. Engler (ed.). Pflanzenr. 4, 9 (3): 1-100. Engelmann, Berlin. 314 REINWARDTIA [VOL.13 ERRATUM REINWARDTIA Vol. 13, Part 2, 2010 1. Please change the existing word in p. 213, LINE 7 on ABSTRAK (written in Bahasa Indonesia version) with the following: Keberadaan dua jenis terakhir melampaui distribusi yang sebelumnya hanya diketahui di barat garis Wallace. 2. Please change the existing epithet name in p, 214, COLUMN 1, LINE 40 on Key to the species of Marantaceae in Sulawesi number 5.a. after Phrynium: longispicum INSTRUCTION TO AUTHORS Reinwardtia is a scientific journal on plant taxonomy, plant ecology, and ethnobotany. Manuscript intended for a publication should be written in English represent an article which has not been published in any other journal or proceedings. Every manuscript will be sent to two blind reviewers. Two printed copies (on A4 paper) of the manuscript of not more than 200 pages together with an electronic copy prepared on Word Processor computer program using Time New Romance letter type and saved in Rich Text File must be submitted. For the style of presentation, authors should follow the latest issue of Reinwardtia very closely. Title of the article should be followed by authors name and mailing address in one-paragraphed English abstract of not more than 250 words. Keywords should be given below each abstract. On a separated paper, author(s) should send the preferred running title of the article submitted. Taxonomic identification key should be prepared using the aligned couplet type. Strict adherence to the International Code of Botanical Nomenclature is observed, so that taxonomic and nomenclatural novelties should be clearly shown. Latin description for new taxon proposed should be provided and the herbaria where the type specimens area deposited should be presented in the long form that is name of taxon, authors name, year of publication, abbreviated journal or book title, volume, number and page. Map, line drawing illustration, or photograph preferably should be prepared in landscape presentation to occupy two columns. Illustration must be submitted as original art accompanying, but separated from the manuscript. On electronic copy, 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. Bibliography, list of literature cited or references follow the Harvard system. REINWARDTIA Vol. 13. No. 3. 2012 CONTENTS Page W.J.J.O. DE WILDE & BRIGITTA E.E. DUYFJES. Trichosanthes (Cucurbitaceae) in Malesia: additions and corrections, including a new species and a new variety 221 DEDEN GIRMANSYAH. Two new species of Begonia (Begoniaceae) from Bukit Tiga-puluh National Park, Riau, Sumatra 229 PUDJI WIDODO. New nomenclature in Syzygium (Myrtaceae) from Indonesia and its vicinities 235 ALEX SUMADIJAYA & JAN FRITS VELDKAMP. Non-Bambusoid Grasses (Gramineae) from Raja Ampat Archipelago, Papua Barat Province, Indonesia 241 ARY PRIHARDYANTO KEIM. New variety, records & discoveries of some species of Pandanus (Pandanaceae) in Sumatra and Kalimantan, Indonesia 255 HARRY WIRIADINATA. A new species of Begonia (Begoniaceae) from Sagea Lagoon, Weda Bay, Halmahera Island, North Moluccas, Indonesia 263 ARY PRIHARDYANTO KEIM. The Pandan flora of Foja-Mamberamo Game Reserve and Baliem Valley, Papua-Indonesia 271 JAN FRITS VELDKAMP. Koordersiochloa Merr. (Gramineae), the correct name for Streblochaete Hochst. exPilg. 299 SRI ENDARTI RAHAYU, KUSWATA KARTAWINATA, TATIEK CHIKMAWATI & ALEX HARTANA. Leaf anatomy of Pandanus species (Pandanaceae) from Java 305 Reinwardtia is a LIPI acredited Journal (258/AU 1/P2MBI/05/2010) Herbarium Bogoriense Botany Division Research Center for Biology- LIPI Cibinong, Indonesia dpn 446-655-1-SM blkng