Thai Forest Bulletin (Botany) No. 41 November 2013 Thai Forest Bulletin (Botany) No. 41 November 2013 ISSN 0495-3843 The Forest Herbarium Department of National Parks, Wildlife and Plant Conservation Chatuchak, Bangkok 10900 THAILAND http://web3.dnp.go.th/botany ISSN 0495-3843 ISSN 0495-3843 The Forest Herbarium Department of National Parks, Wildlife and Plant Conservation Bangkok, THAILAND THAI FOREST BULLETIN (BOTANY) Published by The Forest Herbarium (BKF) Department of National Parks, Wildlife and Plant Conservation Chatuchak, Bangkok 10900, Thailand Advisors Chamlong Phengklai and Kongkanda Chayamarit Editor Thawatchai Santisuk Contribution Editor Managing Editor Tim Utteridge (Royal Botanic Gardens, Kew) Rachun Pooma (Forest Herbarium) Editorial Board David A. Simpson (Royal Botanic Gardens, Kew, UK), John A. N. Parnell (Trinity College Dublin, Ireland), David J. Middleton (Royal Botanic Garden Edinburgh, UK), Paul Wilkin (Royal Botanic Gardens, Kew, UK), Peter C. van Welzen (Naturalis Biodiversity Center, The Netherlands), Hans-Joachim Esser (Botanische Staatssammlung München, Germany), Tim Utteridge (Royal Botanic Gardens, Kew), George Staples (Singapore Botanic Gardens, Singapore) and Rachun Pooma (Forest Herbarium, Thailand) Thai Forest Bulletin (Botany) (TFB) publishes papers on plant taxonomy (especially of vascular plants), nomenclature, phylogeny, systematics, plant geography, and floristics, and in morphology, palynology, cytotaxonomy, chemotaxonomy, anatomy and other relevant disciplines. Priority is given to papers written by staff of the Forest Herbarium and by botanists working on the Flora of Thailand Project. Limited space is available for other relevant papers. TFB is published once a year, usually in September. All manuscripts are peer reviewed. Manuscripts are considered on the understanding that their contents have not appeared, or will not appear, elsewhere in the same or abbreviated form. Before submitting a manuscript please read the Guidelines for authors at http://web3.dnp.go.th/botany/PDF/TFB/TFBGuideline.pdf. These guidelines must be followed precisely otherwise publication of the manuscript will be delayed. Exchange with botanical journals or periodicals pertaining to plant taxonomy would be appreciated. THE FOREST HERBARIUM Director: Rachun Pooma Curator: Nannapat Pattharahirantricin BKF Staff: Wichai Onnom, Somran Suddee, Piyachart Trisarasri, Preecha Karaket, Thanongsak Jonganurak, Voradol Chamchumroon, Nantawan Supantee, Sukontip Sirimongkol, Sukid Rueangruea, Sommanussa Saengrit, Pachok Puudjaa, Ekwit Terdkiadtikul, Nimit Rakthongchai, Orathai Kerdkaeo. Coordinator: Nannapat Pattharahirantricin Front Cover: Xyris spp. Printed by: Office of National Buddishm Press 314-316 Bamrungmung Rd., Pomprabsatrupai, Bangkok, Thailand Tel : 0 2223 3351, 0 2223 5548 Fax: 0 2621 2910 Thai Forest Bulletin (Botany) No. 41, 2013 CONTENTS Page Obituary: Prof. Dr. Christian Puff (1949–2013) i John A.N. Parnell, Henrik Æ. Pedersen, Trevor R. Hodkinson, Henrik Balslev, Peter C. van Welzen, David Simpson, David J. Middleton, Hans-Joachim Esser, Rachun Pooma, Timothy Utteridge & George Staples. Hybrids and the Flora of Thailand 1–9 Peter Wilkie. A new species of Pterospermum Schreb. (Dombeyoideae, Malvaceae/Sterculiaceae) from southern Thailand 10–12 David J. Middleton & Pramote Triboun. New species of Microchirita (Gesneriaceae) from Thailand 13–22 Chatchaba Promma & Sahut Chantanaorrapint. The genus Leucophanes (Calymperaceae, Bryophyta) in Thailand 23–38 Stuart Lindsay, David J. Middleton & Piyakaset Suksathan. Tectaria remotipinna (Tectariaceae), a new record for Thailand 39–40 Colin A. Pendry & Frits Adema. Polygala obliqua Pendry, a new species of Polygalaceae from northern Thailand 41–44 Pramote Triboun. Paraboea middletonii (Gesneriaceae), a new species from Thailand 45–47 Naiyana Tetsana, Henrik Æ. Pedersen & Kitichate Sridith. Five species of Liparis (Orchidaceae) newly recorded for Thailand 48–55 Christian Puff. Kohautia Cham. & Schltdl. (Rubiaceae) – a new genus record for the Flora of Thailand: K. gracilis (Wall.) DC. discovered in Kanchanaburi 56–60 Stuart Lindsay, David J. Middleton & Somran Suddee. Asplenium contiguum Kaulf. (Aspleniaceae), a new record for Thailand 61–63 Christian Tange. A revision of the genus Greenea (Rubiaceae) 64–80 David J. Middleton. Wrightia calcicola (Apocynaceae: Apocynoideae), a new species from Thailand 81–84 Peter C. van Welzen. Mallotus actinoneurus and Mallotus tokiae (Euphorbiaceae), a new record and a new species for Thailand 85–89 Willem J.J.O. de Wilde & Brigitta E.E. Duyfjes. Miscellaneous information on Lagerstroemia L. (Lythraceae) 90–101 Phongsak Phonsena, Pranom Chantaranothai & Amornrat Meesawat. Revision of Xyris L. (Xyridaceae) in Thailand 102–139 Yu Ito. New records of aquatic monocots for the Flora of Thailand: Nechamandra alternifolia (Roxb. ex Wight) Thwaites (Hydrocharitaceae) and Potamogeton octandrus Poiret (Potamogetonaceae) 140–144 Henrik Æ. Pedersen. Is it really worthwhile revising the same flora repeatedly? A case study in Thai Orchidaceae 145–156 Obituary: Prof. Dr. Christian Puff (1949–2013) Ta Phraya National Park, Sa Kaeo, Thailand – Montri Tanaros Prof. Dr. Christian Puff, the Austrian specialist Rubiaceae which he had revised now waiting to be botanist on the family Rubiaceae, joined the Flora printed in the Flora of Thailand. Many of his of Thailand project on a voluntary basis from 1980. initiatives were conducted together with Thai During the past year, Prof. Puff had untiringly collaborators at the Forest Herbarium, Department undertaken several expeditions in diffi cult to reach of National Parks, Wildlife and Plant Conservation, areas, and took great interest in exploring Thai and together their books and publications have Rubiaceae and photographing Thailand’s varied received broad international recognition, and natural landscapes and plant diversity. He made served as the basis for much work on the Flora by sure he encountered a great variety of the country’s Thai botanists. vegetation and plant associations, but he also saw Since he joined the Flora of Thailand Project, the deterioration of the environment in Thailand. he has spent more than 40 years coming to Thailand As a consequence, his efforts culminated in the for expeditions. In the last few years he began to production of many useful botanical books for teach on student trips about tropical forests and Thailand in collaboration with Thai colleagues, i.e. plant habitats with his great knowledge - which “Rubiaceae of Thailand: a pictorial guide to the undoubtedly shared with the BKF staff who indigenous and cultivated genera”, “Plants of accompanied him. Khao Yai National Park”, “Plants of Doi Inthanon National Parkk”, and “Plants of Kaeng Krachan Prof. Puff devoted his life to the work on the National Parkk”. He also wrote ecological articles Flora of Thailand and particularly on the Rubiaceae. on ecology, vegetation and fl oristic composition, The image of Prof. Puff carrying his camera with a which were especially fruitful to the Thai fl ora, e.g. bag fi lled with photography equipment walking “Living under water for up to 4 months of the year: through the forest will be forever impressed in our observations on the rheophytes of the Mekong memories. We will never forget his fondness for River in the Pha Team National Park area (Thailand/ fried buns (‘pa-tong-ko’) for breakfast which he Laos border)”. He supervised two Thai botanists called a ‘chromosome with pandanus jam’. Last during their PhD projects: Kitichate Sridith and but not least, without Prof. Puff the Rubiaceae of Voradol Chamchumroon, and supported several Thailand would never have been brought so far young Thai botanists during their visits to the into the current excellent foundation that it is today. Institute of Botany, University of Vienna. Prof. He will always be fondly remembered by Thai Puff’s contribution was ongoing to the present, colleagues and his name will forever remain in the with the most encouraging being his website on history of The Flora of Thailand. Thai Rubiaceae, as well as a number of genera of Kongkanda Chayamarit & Rachun Pooma SW 6585-I edit-PC6.indd 1 9/11/2556 18:30:31 THAI FOR. BULL. (BOT.) 41: 1–9. 2013. Hybrids and the Flora of Thailand JOHN A.N. PARNELL1, HENRIK Æ. PEDERSEN2, TREVOR R. HODKINSON1, HENRIK BALSLEV3, PETER C. VAN WELZEN4, DAVID SIMPSON5, DAVID J. MIDDLETON6, HANS-JOACHIM ESSER7, RACHUN POOMA8, TIMOTHY UTTERIDGE5, GEORGE STAPLES9 INTRODUCTION compilation provides a useful, if now dated, review and indicates that at that time there were between This article, like its predecessor Chayamarit 23,675 and 45,000 interspecifi c hybrids known et al. (2007), is intended to stimulate discussion. If worldwide, of which perhaps 50% were artifi cial you have an alternative perspective, please write (i.e. artifi cially induced). Certainly, spontaneous an article for submission to be published in a hybridisation appears common in nature, with subsequent volume of TFB. It is intended that perhaps 11% of the species listed in the Floras of further such discussion-stimulating articles will be the United Kingdom, Scandinavia, US Great Plains, published from time-to-time. US Intermountain and Hawaii being hybrids Herein we highlight the surprising lack of (Hegarty & Hiscock, 2005 quoting Ellstrand et records of plant hybrids in Thailand, suggest where al.’s, 1996 survey). Rieseberg (1997) uses the fi gure hybrids may be sought and indicate that a range of of 11% as the average