REINWARDTIA 2017 16 (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. 16 (2): 49 – 110, December 19, 2017 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 Rina Munazar 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: Plant and flower of Appendicula cordata Wibowo & Juswara. Photos by A. R. U. Wibowo. The Editors would like to thank all reviewers of volume 16(2): Aida Baja-Lapis - Ecosystems Research and Development Bureau College, Laguna, Philippines Andre Schuiteman - Herbarium Kewense, Royal Botanic Gardens Kew, Richmond, Surrey, England, UK Eduard F. de Vogel - Hortus Botanicus, Rapenburg 73, 2311 GJ, Leiden Herwasono Soedjito - Research Center for Biology - Indonesian Institute of Sciences, Bogor, Indonesia John Dransfield - Herbarium Kewense, Royal Botanic Gardens Kew, Richmond, Surrey, England, UK Maarten J. M. Christenhusz - Plant Gateway, Hertford, England, UK Mien A. Rifai - Akademi Ilmu Pengetahuan Indonesia (AIPI), Jakarta, Indonesia Peter O’Byrne - Waikiki Condominium H10-11, Tanjung Aru, 88100 Kota Kinabalu, Sabah, Malaysia Yee Wen Low - Herbarium Singapore, Singapore Botanic Gardens, 1 Cluny Road, Singapore REINWARDTIA Vol 16, No 2, pp: 107–110 107 TRICHOTOSIA GABRIEL-ASEMIANA (ORCHIDACEAE), A NEW SPECIES FROM TAMBRAUW, WEST PAPUA PROVINCE, INDONESIA Received July 25, 2017; accepted November 08, 2017 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 ANDRE SCHUITEMAN Royal Botanical Gardens Kew, Richmond, TW9 3AB, United Kingdom. Email : A.Schuiteman@kew.org ABSTRACT MAMBRASAR, Y. M. & SCHUITEMAN, A. 2017. A new species of Trichotosia (Orchidaceae: Epidendroideae: Podochileae) from Tambrauw, West Papua, Indonesia. Reinwardtia 16(2): 107‒110. — A new species of orchid, Trichotosia gabriel-asemiana Mambrasar & Schuit. from West Papua, Indonesia, is described and illustrated, includ- ing a colour photograph. Key words: New species, Tambr auw, T richotosia gabriel-asemiana. ABSTRAK MAMBRASAR, Y. M. & SCHUITEMAN, A. 2017. Jenis baru Trichotosia (Orchidaceae: Epidendroideae: Podochileae) dari Tambrauw, Papua Barat, Indonesia. Reinwardtia 16(2): 107‒110. — Dipertelakan dan disajikan gambar ilustrasi serta foto jenis baru anggrek Trichotosia gabriel-asemiana Mambrasar & Schuit. dari Papua Barat, Indonesia. Kata kunci: J enis bar u, Tambr auw, T richotosia gabriel-asemiana. INTRODUCTION New Guinea is one of the global hotspots for orchid diversity, with about 2869 species in 129 genera being recorded so far (Ormerod, 2017). The genus Trichotosia Blume (Epidendroideae: Podochileae) is here represented by approximately 23 species, many of which are poorly known and hard to distinguish from each other. The genus as a whole contains about 40–50 species (Cribb & Ng, 2005), distributed from the Himalaya and China, through the Malay Archipelago and the Philippines to the Solomon islands and Vanuatu. New Guinea is clearly one of the centres of diversity for the genus. Its members are easily recognised by the red-brown, yellow or sometimes whitish hairs covering the leaf-sheaths and, usually, the leaves. In 2016, during field work in the Tambrauw Regency in the Vogelkop or Bird’s Head Peninsula of New Guinea, part of the West Papua Province of Indonesia, a team from Bioresources Exploration Papua (Widya Nusantara Expedition Program (E-Win) 2017)-LIPI discovered a spe- cies of Trichotosia that by its small size, creep- ing rhizome, single-flowered inflorescences, and maroon flowers appeared quite distinct from any other Trichotosia species known from New Guin- ea. It is, however, remarkably similar to a little- known species from Vietnam, T. dalatensis (Gagnep.) Seidenf., but the morphology and indu- mentum of the lip appear sufficiently distinct to consider the New Guinea material as belonging to a different, undescribed species. Trichotosia gabriel-asemiana Mambrasar & Schuit., spec. nov. — Type: Indonesia, West Papua Province Tambrauw Regency, Fef District, along the road to Syubun village, 21 April 2016, Michael Mambrasar & Santika 97 (Holotype: BO!). Figs. 1 & 2. Diagnosis. This species is similar to Trichotosia microphylla Blume and T. dalatensis by its slender, creeping rhizome, short leaves (less than 2 cm long), and solitary flowers with an abaxial, conical callus near the lip apex. Trichotosia dalatensis has flowers that are similar in size and in the maroon colour, but differs in having a glabrous, uniformly thick lip with a distinct adaxial callus, whereas T. gabriel-asemiana has a lip that is sparsely pilose abaxially and which is abruptly divided into a fleshy basal part and a thin- textured upper part, but lacks an adaxial callus. Trichotosia microphylla has larger, yellowish green flowers (lip ca. 9 mm long, vs. 4 mm in T. gabriel-asemiana), with the lip not pubescent abaxially, and not abruptly divided into a fleshy basal part and a thinner upper part. Small epiphytic herb. Roots numerous from the rhizome and especially from the basal part of the stem, hairy, branching, up to 4.5 cm long, 1 mm REINWARDTIA 108 [VOL.16 Fig.1. Trichotosia gabriel-asemiana Mambrasar & Schuit., spec. nov. A. Plant, B1. Flower (top view), B2. Flower (lateral view), C. Lateral sepal, D. Petal, E. Lip, F. Dorsal sepal, G. Anther, H. Column. From Michael Mambrasar & Santika 97 (BO), drawing by Wahyudi Santoso (BO). B2 D C G H A E F 0.15 cm 0.10 cm 0.15 cm 0.15 cm 0.5 cm 0.10 cm 0.15 cm 1.5 cm 0.3 cm B1 MAMBRASAR & SCHUITEMAN : A new species of Trichotosia from West Papua, Indonesia 2017] diam. Rhizome slender, creeping, branching, 2– 4.5 cm long, 0.5–1 mm diam., covered with hairy sheaths. Stems erect, patent or pendulous with ascending apex, green to brown, 4–8.5 cm long, 1 –2 mm diam, terete, internodes 5–11 mm long, covered with leaf sheaths, with 10–15 leaves. Leaves distichous, increasing in size upwards, subpatent, green, 1.4–1.7 cm × 4–8 mm, oblong to elliptic or narrowly obovate, acute, with decurved margins, thick-coriaceous, rather densely covered in soft, pale greyish brown hairs ca. 1.5 mm long. Inflorescence emerging laterally from the upper internodes of the stem, short, one-flowered; peduncle very short, covered in soft, pale greyish brown hairs. Floral bract 6 × 3 mm, lanceolate, pilose like the leaves. Pedicel-with-ovary 1 mm long, densely pilose. Flower not opening widely, maroon, 7 mm long, 5 mm wide. Dorsal sepal 3 × 1 mm, narrowly ovate, subacute, abaxially sparsely verrucose, pilose, 3-veined. Lateral sepals 4 mm long, at the base 4 mm wide, obliquely broadly triangular-ovate, subacute, sparsely verrucose, pilose, 3-veined. Petals porrect, 3 × 1 mm, narrowly oblong, obtuse, glabrous, with one branching vein, appearing 3-veined near the middle. Lip entire, 4 × 1.8 mm, narrowly oblong- ovate, fleshy in the basal 2.2 mm, abaxially rather sparsely pilose, 5-veined, the apical part (epichile) concave and thinner textured, the transition between the fleshier basal part and the epichile resembling a ridge; margin of epichile undulate near the base, apex obtuse, with a small, conical, abaxial callus. Fruit not seen. Distribution. New Guinea, endemic. Only known from the type locality in Tambrauw Regency, West Papua Province, Indonesia. Habitat. Epiphyte on tr ees in pr imar y for est, elevation 450 m. Etymology. Named in honour of Gabriel Asem, Regent of Tambrauw Regency since 2011, who in 2015 declared Tambrauw regency a conservation zone. Notes. T richotosia gabriel-asemiana, which it is our pleasure to name in honour of Gabriel Asem, the Regent of Tambrauw who has done so much for nature conservation in West Papua Province, is distinct from any of the species of Trichotosia currently recorded from New Guinea by its small size, creeping rhizome, single-flowered inflores- cences, and maroon flowers. It is, however, clearly allied to a small group of taxa related to T. micro- phylla Blume (Blume, 1825; Smith, 1905; 1908- 1914, fig. 292), a species from Southeast Asia, Sumatra, Java and Borneo. The new species is particularly similar to T. dalatensis from South Vietnam (Gagnepain, 1930, as Eria dalatensis Gagnep.; Seidenfaden, 1992), which differs in the characters mentioned in the diagnosis. Another Fig. 2. Trichotosia gabriel-asemiana Mambrasar & Schuit., spec. nov. Habit and flower. Photo taken from type location by YM Mambrasar (BO). REINWARDTIA 110 [VOL.16 related species is Trichotosia dongfangensis X. H. Jin & L. P. Siu (Jin & Siu, 2004) from China (Hainan). This has different colours (flower yellowish green with two purple calli on the lip), and a larger (7 mm long), glabrous lip of uniform thickness that lacks the conical abaxial callus near the apex; it seems very close to T. microphylla Blume. Peter O’Byrne (pers. comm.) observed plants in Sulawesi that appeared indistinguishable from T. microphylla, except that the lip was pu- bescent abaxially, much like our new species. The status of these plants is at present unresolved. ACKNOWLEDGEMENTS The first author would like to thank (1) the E-WIN program of LIPI for the opportunity to join the expedition to Tambrauw Regency, (2) Dr. Harry Nugroho, Dr. Kusuma Dewi Sri Yulita, Yessi Santika M.Si., Denny Sahroni and the E-WIN team for helping to collect the specimens, (3) the Director of Balai Besar Konservasi Papua Barat and the Government of Tambrauw Regency for granting permission to collect specimens, and (4) Diah Sulistiarini M.Si. for helpful discussions. We thank the reviewers for constructive comments. REFERENCES BLUME, C. L. 1825. Bijdragen tot de Flora van Nederlandsch Indië. Lands Drukkerij, Batavia. CRIBB, P. J. & NG, Y. P. 2005. Trichotosia. In: PRIDGEON, A. M., CRIBB, P. J., CHASE, M W., & RASMUSSEN F. N. (eds.). Genera Or- chidacearum, Vol. 4. Epidendroideae (Part one). Oxford University Press, Oxford. GAGNEPAIN, F. 1930. Eria nouveaux d’Indo- Chine. Bulletin du Muséum National d'Histoire Naturelle, sér.2, 2: 304–312. JIN, X. H. & SIU, G. L. P. 2004. Trichotosia dongfangensis (Orchidaceae), a new species from China. A nnales Botanici Fennici 41: 465– 466. ORMEROD, P. 2017. Checklist of Papuasian Orchids. Nature & Travel Books, Lismore. SEIDENFADEN, G. 1992. The Orchids of Indochina. Opera Botanica 114: 1–502. SMITH, J. J. 1905. Die Orchideen von Java. Brill, Leiden. SMITH, J. J. 1908–1914. Die Orchideen von Java. Figuren-Atlas. Brill, Leiden. INSTRUCTION TO AUTHORS Scope. R einwardtia is a scientific r egular jour nal on plant taxonomy, plant ecology and ethnobotany published in June and December. Manuscript intended for a publication should be written in English. Titles. Titles should be br ief, infor mative and followed by author ’s name and mailing address in one- paragraphed. Abstract. English abstr act followed by Indonesian abstr act of not mor e than 250 wor ds. Keywor ds should be given below each abstract. Manuscript. Manuscr ipt is or iginal paper and r epr esent an ar ticle which has not been published in any other journal or proceedings. The manuscript of no more than 36 pages by using Times New Roman 11, MS Word for Windows of A4 with double spacing, submitted to the editor through . New paragraph should be indented in by 5 characters. For the style of presentation, authors should follow the latest issue of Reinwardtia very closely. 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. et al. (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. (Accessed 15 February 2012). http://www.nationaalherbarium.nl/fmcollectors/k/KostermansAJGH.htm REINWARDTIA Author Agreement Form Title of article : Name of Author(s) : I/We hereby declare that:  My/Our manuscript was based on my/our original work.  It was not published or submitted to other journal for publication.  I/we agree to publish my/our manuscript and the copyright of this article is owned by Reinwardtia.  We have obtained written permission from copyright owners for any excerpts from copyrighted works that are included and have credited the sources in our article. Author signature (s) Date ___________________________________________________________________________________________ Name Reinwardtia Published by Herbarium Bogoriense, Botany Division, Research Center for Biology, Indonesian Institute of Sciences Address: Jln. Raya Jakarta-Bogor Km. 46 Cibinong 16911, P.O. Box 25 Cibinong Telp. (+ 62) 21 8765066; Fax (+62) 21 8765062 Email: reinwardtia@mail.lipi.go.id REINWARDTIA Vol. 16. No. 2. 2017 CONTENTS Page HIMMAH RUSTIAMI & ANDREW HENDERSON. A synopsis of Calamus (Arecaceae) in Sulawesi, Indonesia ... 49 ANINDA R. U. WIBOWO & LINA S. JUSWARA. A new species of A ppendicula section Pododesme (Orchidaceae) from Indonesia ……………………………………………………………………………………………...………..... 65 J.F. VELDKAMP. Poa opinata (Graminaeae), A new species from G. Binaiya, Ceram, Moluccas, Indonesia ……. 73 MUHAMMAD MANSUR & KUSWATA KARTAWINATA. Phytosociology of a lower montane forest on mountain Batulanteh, Sumbawa, Indonesia …………………………………………………………………………………….... 77 JAIDEEP MAZUMDAR. Typification of Tectaria paradoxa (Polypodiaceae subfam. Tectarioideae) …………….... 93 RUGAYAH & SITI SUNARTI. The genus of Lasianthus (Rubiaceae) in Wawonii Island, Southeast Sulawesi, Indonesia ……………………………………………………………………………………………………………….. 97 DIAH SULISTIARINI, DANIEL POTTER & PETER O’BYRNE. Dendrobium tinukariensis, A new species of section Calyptrochilus from Mekongga mountains, Southeast Sulawesi, Indonesia ………………………………… 103 YASPER MICHAEL MAMBRASAR & ANDRE SCHUITEMAN. A new species of Trichotosia (Orchidaceae: Epidendroideae: Podochileae) from Tambrauw, West Papua, Indonesia …..……………………………………. 107 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 0a. front cover, cover dalam, reviewer Reinwardtia final 16(1) 8a Jasper M mambrasar et al final (107-110) 9. Daftar Isi Reinwardtia 16(2)