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Thai Fores Thai Forest Bulletin t Bulletin (Botany) (Botany) Vol. 48 No. 1, 2020 (January–June 2020) ISSN 0495-3843 (print) Vol. 48 No. 1, 2020 Vol. ISSN 2465-423X (electronic) Forest Herbarium Department of National Parks, Wildlife and Plant Conservation Chatuchak, Bangkok 10900 THAILAND http://www.dnp.go.th/botany ISSN 0495-3843 (print) ISSN 2465-423X (electronic) Fores t Herbarium Department of National Parks, Wildlife and Plant Conservation Bangkok, THAILAND THAI FOREST BULLETIN (BOTANY) Thai Forest Bulletin (Botany) Vol. 48 No. 1, 2020 Published by the Forest Herbarium (BKF) CONTENTS Department of National Parks, Wildlife and Plant Conservation Chatuchak, Bangkok 10900, Thailand Page Advisors Hironori Toyama, Mu Mu Aung, Shuichiro Tagane, Akiyo Naiki, Somran Suddee, Hidetoshi Nagamasu, Ai Nagahama, Swe Swe Win, Nobuyuki Tanaka & Chamlong Phengklai, Kongkanda Chayamarit & Thannarin Na Nakorn Tetsukazu Yahara. Contributions to the Flora of Myanmar V: a new record of Editors Mallotus tokiae (Euphorbiaceae) with the description of fower morphology from Rachun Pooma & Timothy Utteridge Lampi Island 1–6 Nattapon Nopporncharoenkul, Thaya Jenjittikul, Ngarmnij Chuenboonngarm, Managing Editor Assistant Managing Editor Kesara Anamthawat-Jónsson & Puangpaka Umpunjun. ytogenetic verication Nannapat Pattharahirantricin Sawita Yooprasert of Curcuma candida (Zingiberaceae) from Thailand and Myanmar 7–17 Editorial Board Michele Rodda. Two new genera of Apocynaceae in Laos 18–20 Rachun Pooma (Forest Herbarium, Thailand), Timothy Utteridge (Royal Botanic Gardens, Kew, UK), Wanniga Munsuk, Piyakaset Suksathan & Pimwadee Pornpongrungrueng. David A. Simpson (Royal Botanic Gardens, Kew, UK), John A.N. Parnell (Trinity College Dublin, Leontopodium andersonii (Asteraceae), a new genus record for Thailand 21–23 Ireland), David J. Middleton (Singapore Botanic Gardens, Singapore), Peter C. van Welzen (Naturalis Bio- Charan Leeratiwong, Piya Chalermglin & David M. Johnson. Taxonomic notes on the diversity Center, The Netherlands), Hans-Joachim Esser (Botanische Staatssammlung München, genus Alphonsea (Annonaceae) in Thailand 24–33 Germany), André Schuiteman (Royal Botanic Gardens, Kew, UK), Anders S. Barfod (Aarhus University, Denmark), Piyakaset Suksathan (Queen Sirikit Botanic Garden, Thailand), Sutee Duangjai, Sukid Rueangruea, Thamarat Phutthai, David Middleton & Somran Pimwadee Pornpongrungrueng (Khon Kaen University, Thailand), Stuart Lindsay Suddee. Diospyros phuwuaensis (Ebenaceae), a new species from North-Eastern Thailand 34–44 (Singapore Botanic Gardens, Singapore), Prachaya Srisanga (Queen Sirikit Botanic Garden, Thailand) Thiamhathai Choopan, Sarawood Sungkaew, Nopparut Toolman & Somran Suddee. Staurogyne beddomei (Acanthaceae), a new record for Thailand 45–47 Thai Forest Bulletin (Botany) (TFB) publishes papers on plant taxonomy (especially of vascular plants), Saroj Ruchisansakun, Pramote Triboun & Piyakaset Suksathan. Impatiens capillipes nomenclature, phylogeny, systematics, plant geography, and foristics, and in morphology, palynology, (Balsaminaceae), a new record for Thailand 48–57 cytotaxonomy, chemotaxonomy, anatomy and other relevant disciplines. Priority is given to papers written by staf of the Forest Herbarium and by botanists working on the Flora of Thailand Project. Limited space is Worachat Tokaew, Pranom Chantaranothai, Henrik Balslev & Kamolhathai Wangwasit. available for other relevant papers. Notes on Uraria (Leguminosae: Papilionoideae: Desmodieae) from Thailand and Vietnam 52–56 Yotsawate Sirichamorn & Frits Adema. Four new combinations in the legume genus The journal now uses Thai Journal Online (ThaiJO) for online submission and peer review at Brachypterum 57–60 www.tci-thaijo.org/index.php/ThaiForestBulletin. Manuscripts are considered on the understanding that their contents have not appeared, or will not appear, elsewhere in the same or abbreviated form. Before Kanokorn Rueangsawang, Somran Suddee, Pranom Chantaranothai & David A. Simpson. submitting a manuscript please read the Guidelines for authors. These guidelines must be followed A synopsis of Rungia (Acanthaceae) in Thailand 61–71 precisely otherwise publication of the manuscript will be delayed. In addition, papers published online Phongsakhon Narkthai & Pranom Chantaranothai. Taxonomic notes on Grewioideae will be distributed simultaneously in printed form to several libraries, and bound hard copy volumes (Malvaceae) in Thailand 72–76 will appear later. Exchange with botanical journals or periodicals pertaining to plant taxonomy would be Somran Suddee, Sukid Rueangruea, Manop Poopath, Preecha Karaket, Wittawat Kiewbang appreciated. & David Middleton. Colona rivularis (Malvaceae), a new species from Thailand 77–81 FOREST HERBARIUM Somran Suddee, Shuichiro Tagane, Phetlasy Souladeth, Deuanta Kongxaysavath, Sukid Rueangruea, Yoshihisa Suyama & Eizi Suzuki. Coleus bolavenensis (Lamiaceae), Director: Rachun Pooma a new species from Laos 82–85 Curator: Nannapat Pattharahirantricin BKF Staf: Somran Suddee, Piyachart Trisarasri, Voradol Chamchumroon, Somchai Prasertthaicharoen, Nanthawan Suphuntee, Preecha Karaket, Thanongsak Jonganurak, Pachok Puudjaa, Tarathorn Kaewplub, Narong Koonkhunthod, Montri Saengsawasti, Naiyana Tetsana, Sukontip Sirimongkol, Manop Poopath, Sommanussa Tanikkool, Sukid Rueangruea, Sawita Yooprasert, Saksan Kaitongsuk, Theerawat Thananthaisong, Orathai Kerdkaew. Front Cover: Mallotus tokiae Welzen Printed at: Prachachon Co., Ltd. 35 Soi Pipat, Silom Road, Bangrak, Bangkok 10500, Thailand Tel : 0 2636 6550 THAI FOREST BULL., BOT. 48(1): 1–6. 2020. DOI https://doi.org/10.20531/tfb.2020.48.1.01 Contributions to the Flora of Myanmar V: a new record of Mallotus tokiae (Euphorbiaceae) with the description of flower morphology from Lampi Island HIRONORI TOYAMA1,2,*, MU MU AUNG3, SHUICHIRO TAGANE2,4, AKIYO NAIKI5, SOMRAN SUDDEE6, HIDETOSHI NAGAMASU7, AI NAGAHAMA2, SWE SWE WIN3, NOBUYUKI TANAKA8 & TETSUKAZU YAHARA2 ABSTRACT Mallotus tokiae (Euphorbiaceae), a poorly known species, was described based upon a single fruiting specimen from Surat Thani Province, peninsular Thailand. We found this species with staminate and slightly mature pistillate flowers in Lampi Island, Myanmar. A new locality record, description of flowers, preliminary conservation assessment and DNA barcoding of this species are provided. KEYWORDS: Flora, inventory, ITS, Mallotus, matK, Mergui Archipelago, rbcL. Accepted for publication: 8 December 2019. Published online: 10 January 2020 INTRODUCTION thecae in the anthers: two in Mallotus, and three or four in Macaranga (Slik et al., 2000; van Welzen The genus Mallotus Lour. (Euphorbiaceae) et al., 2009). Other differences include the general comprises about 110 species of shrubs or trees, presence of stellate hairs, generally racemose inflo- seldom climbers, and mainly occurs in (sub-)tropical rescences and usually much higher stamen numbers Asia and the western Pacific, with only two species (up to ca 150) in Mallotus, in contrast to the general in tropical Africa and Madagascar (Sierra et al., 2007). absence of stellate hairs, generally paniculate inflo- Recent phylogenetic work using molecular and rescences and usually lower stamen numbers (up to morphological data showed that Mallotus is mono- ca 30) in Macaranga. phyletic and sister to monophyletic Macaranga Thouars (Kulju et al., 2007; Sierra et al., 2010). The Currently, 38 and 24 species of Mallotus are two genera are typically characterized by the presence recognized in Thailand and Myanmar, respectively of glandular hairs with a globose to disc-shaped head (Kress et al., 2003; van Welzen et al., 2007; Kiu & and extrafloral nectaries on the upper leaf surface, Gilbert, 2008; The Plant List, 2013; van Welzen, 2017), dioecious reproduction and generally dehiscing of which six and four species are endemic to each fruits that often carry soft spines (Sierra et al., 2007; country, and 15 species are known from both countries. van Welzen et al., 2009; Sierra et al., 2010), and can However, comprehensive floristic surveys inMyanmar be distinguished from each other by the number of have been limited and much remains to be learned 1 Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies, Tsukuba, Ibaraki, 305-8506, Japan. 2 Center for Asian Conservation Ecology, Kyushu University, 744 Motooka, Fukuoka, 819-0395, Japan. 3 Forest Research Institute, Forest Department, Ministry of Natural Resources and Environmental Conservation, Yezin, Nay Pyi Taw, Myanmar. 4 The Kagoshima University Museum, Kagoshima university, 1-21-30 Korimoto, Kagoshima, 890-0065, Japan. 5 Tropical Biosphere Research Center, University of the Ryukyus, 870 Uehara, Taketomi-cho, Yaeyama-gun, Okinawa, 907-1541 Japan. 6 Forest Herbarium, Department of National Parks, Wildlife and Plant Conservation, Chatuchak, Bangkok 10900, Thailand. 7 The Kyoto University Museum, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto, 606-8501, Japan. 8 Department of Botany, National Museum of Nature and Science, Amakubo 4-1-1, Tsukuba, Ibaraki, 305-0005, Japan. * Corresponding author: [email protected] © 2020 Forest Herbarium 2 THAI FOREST BULLETIN (BOTANY) VOL. 48 NO. 1 of its flora as well as of its floristic relations with The morphological comparisons were based on neighbouring regions in Asia (Tanaka, 2005). relevant literature (Kress et al., 2003; Sierra et al., Recently, Mallotus tokiae Welzen, was described 2007; van Welzen et al., 2007; Kiu & Gilbert, 2008;