Thai Fores Thai Forest Bulletin t Bulletin (Botany) Vol. 48 No. 2, 2020 Vol. t Bulletin (Botany) (Botany) Vol. 48 No. 2, 2020 (July–December 2020) ISSN 0495-3843 (print) 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. 2, 2020 Published by the Forest Herbarium (BKF) CONTENTS Department of National Parks, Wildlife and Plant Conservation Chatuchak, Bangkok 10900, Thailand Page Advisors Obituary: Prof. Dr Thawatchai Santisuk (1944–2020) i Chamlong Phengklai, Kongkanda Chayamarit & Rungnapar Pattanavibool Timothy M.A. Utteridge. Two new species of Pittosporum (Pittosporaceae) for the Flora of Thailand 87–94 Editors Somran Suddee, Thamarat Phutthai, Naiyana Tetsana, Theerawat Thananthaisong & Rachun Pooma & Timothy Utteridge Wittawat Kiewbang. Psammosilene tunicoides (Caryophyllaceae) a new generic and species record for Thailand 95–100 Managing Editor Assistant Managing Editor Nannapat Pattharahirantricin Sawita Yooprasert Teerawat Srisuk, Voradol Chamchumroon & Pimwadee Pornpongrungrueng. New records of the genus Psychotria (Rubiaceae) from Thailand 101–107 Editorial Board Keooudone Souvannakhoummane, Soulivanh Lanorsavanh, Jeong Ho Park, Ho Sang Rachun Pooma (Forest Herbarium, Thailand), Timothy Utteridge (Royal Botanic Gardens, Kew, UK), Kang, Tai Hyeon Ahn, Singkone Xayalath & Chanhsamone Phongoudom. David A. Simpson (Royal Botanic Gardens, Kew, UK), John A.N. Parnell (Trinity College Dublin, Begonia colliculata (Begoniaceae), a new species from Nam Kading National Ireland), David J. Middleton (Singapore Botanic Gardens, Singapore), Peter C. van Welzen (Naturalis Bio- Protected Area, Bolikhamxai province, Laos 108–113 diversity Center, The Netherlands), Hans-Joachim Esser (Botanische Staatssammlung München, Germany), André Schuiteman (Royal Botanic Gardens, Kew, UK), Anders S. Barfod Woranart Thammarong, Sarayut Rakarcha & Michele Rodda. Heterostemma brownii (Aarhus University, Denmark), Piyakaset Suksathan (Queen Sirikit Botanic Garden, Thailand), (Apocynaceae), a new record for Laos and Thailand 114–117 Pimwadee Pornpongrungrueng (Khon Kaen University, Thailand), Stuart Lindsay Atiwut Bunlam, Yupa Thasod, Pitaksit Ditbanjong, Rattanaporn Fongngern & Paul (Singapore Botanic Gardens, Singapore), Prachaya Srisanga (Queen Sirikit Botanic Garden, Thailand) J. Grote. The Cenozoic leaf morphotypes and palaeoclimate interpretation from the Doi Ton Formation, Mae Sot District, Tak Province, western Thailand 118–141 Thai Forest Bulletin (Botany) (TFB) publishes papers on plant taxonomy (especially of vascular plants), Anand Kumar. Notes on the typification of five names in Lauraceae 142–144 nomenclature, phylogeny, systematics, plant geography, and floristics, and in morphology, palynology, cytotaxonomy, chemotaxonomy, anatomy and other relevant disciplines. Priority is given to papers written Chalermpol Suwanphakdee, David A. Simpson, Trevor R. Hodkinson & Pranom by staff of the Forest Herbarium and by botanists working on the Flora of Thailand Project. Limited space is Chantaranothai. A synopsis of Thai Piper (Piperaceae) 145–183 available for other relevant papers. Sarayut Rakarcha, Charun Maknoi, Wattana Tanming, Woranart Thammarong & Prateep Panyadee. Dimetra (Oleaceae), a new genus record for Lao PDR 184–186 The journal now uses Thai Journal Online (ThaiJO) for online submission and peer review at www.tci-thaijo.org/index.php/ThaiForestBulletin. Manuscripts are considered on the understanding that Hans-Joachim Esser. Cardamine occulta (Brassicaceae), a new name for the Flora of Thailand 187–189 their contents have not appeared, or will not appear, elsewhere in the same or abbreviated form. Before Piyakaset Suksathan. Geraniaceae in Thailand 190–198 submitting a manuscript please read the Guidelines for authors. These guidelines must be followed Nannapat Pattharahirantricin & Manop Poopath. Terminalia santisukiana precisely otherwise publication of the manuscript will be delayed. In addition, papers published online (Combretaceae), a new species from North-Eastern Thailand 199–203 will be distributed simultaneously in printed form to several libraries, and bound hard copy volumes will appear later. Exchange with botanical journals or periodicals pertaining to plant taxonomy would be Santi Watthana & Somran Suddee. Lectotypification ofPorpax scaposa (Orchidaceae) 204–205 appreciated. Sarayut Rakarcha, Wittaya Pongamornkul, Woranart Thammarong, Charun Maknoi & Keooudone Souvannakhoummane. Stemona fimbritepala (Stemonaceae), a new FOREST HERBARIUM species from northern Laos 206–211 Director: Rachun Pooma Sunisa Sangvirotjanapat, Trần Hữu Đăng & Mark Newman. Ten new species of Globba Curator: Nannapat Pattharahirantricin section Globba from continental South-East Asia 212–233 Hai Thi Vu, Thanh Trung Nguyen, Hung Quang Nguyen, Khuong Duy Le & Truong BKF Staff: Somran Suddee, Piyachart Trisarasri, Voradol Chamchumroon, Somchai Prasertthaicharoen, Kittima Duengkae, Nanthawan Suphuntee, Preecha Karaket, Thanongsak Jonganurak, Pachok Puudjaa, Van Do. Notes on taxonomy of the genus Argostemma (Rubiaceae) from Vietnam 234–238 Tarathorn Kaewplub, Narong Koonkhunthod, Naiyana Tetsana, Sukontip Sirimongkol, Manop Poopath, Sommanussa Tanikkool, Sukid Rueangruea, Sawita Yooprasert, Saksan Kaitongsuk, Theerawat Thananthaisong, Orathai Kerdkaew. Front Cover: Terminalia santisukiana Patthar. & Poopath Printed at: Prachachon Co., Ltd. 35 Soi Pipat, Silom Road, Bangrak, Bangkok 10500, Thailand Tel : 0 2636 6550 THAI FOREST BULL., BOT. 48(2): i. 2020. Accepted for publication: 10 November 2020 DOI https://doi.org/10.20531/tfb.2020.48.2.ob Published online: 18 November 2020 Obituary: Prof. Dr Thawatchai Santisuk (1944–2020) treatise on Thai forest types. He travelled to herbaria around the world, not only to study the Thai collections of many plant families but to bring new advances in botanical research and education back to BKF and other Thai botanical institutes. He was also awarded a Professorship at Kasetsart University. In later years, Prof. Thawatchai was a fellow of the Academy of Science, The Royal Society of Thailand. He accompanied HRH Princess Maha Chakri Sirindhorn on a number of local and overseas visits and continued to undertake extensive botanical surveys throughout the country. He edited many manuscripts for various publications, with critical comments that would point out modern ways of classification. His vast knowledge of the Thai flora Prof. Dr Thawatchai Santisuk, one of Thailand’s was passed on to a younger generation of botanists most widely respected plant taxonomists, passed at BKF, Kasetsart and other universities where he away on 3 July 2020 at the age of 76, after a long taught the botany components of courses in advanced illness. He was born in Songkhla on 20 March 1944. Taxonomy, Palynology and Pharmaceutical Botany. He graduated with a Bachelor’s degree from the He was also a member of many committees for Faculty of Forestry at Kasetsart University in 1967, Master’s and Doctoral degrees, a reflection of his followed by a Master’s degree in Plant taxonomy excellent supervision skills. from the University of Edinburgh in 1970 and a PhD in Plant taxonomy from the University of Copenhagen Prof. Thawatchai was honoured by having in 1976. several taxa named after him. The genus Santisukia Brummitt (Bignoniaceae) was named for him to Prof. Thawatchai was a superb botanist and acknowledge his contribution to Bignoniaceae - one ecologist, as well as a brilliant teacher, actively of the first families that he contributed to the Flora involved in many aspects of botanical science in of Thailand. Four species have also been named after Thailand. He spent his whole career with the Forest him: Croton santisukii Airy Shaw (Euphorbiaceae), Herbarium, Royal Forest Department (BKF), which Glochidion santisukii Airy Shaw (Euphorbiaceae), later became the Department of National Parks, Impatiens santisukii T.Shimizu (Balsaminaceae) and Wildlife and Plant Conservation, based in Bangkok. Terminalia santisukiana Patthar. & Poopath His most important and lasting contribution was as (Combretaceae). Dick Brummitt, Kenneth Airy Editor-in-Chief of the Flora of Thailand and Thai Shaw and Tatemi Shimizu were all good friends of Forest Bulletin (Botany). He was deeply committed Prof. Thawatchai, while Nannapat Pattharahirantricin to the Flora project, with a lasting legacy of bringing and Manop Poopath were two of his students who the production of the Flora to international standards. later became colleagues in the Forest Herbarium. He was a very able ambassador for the Flora, representing Thai botany at many international Prof. Thawatchai is survived by his wife meetings. He actively engaged with the members of Paiparn, his son Chakorn and his twin grandchildren. the Flora editorial board and was very welcoming to His kind, gentle and polite personality will be very the many Thai and foreign botanists who visited BKF much missed but he will forever remain in our (often over a delicious lunch in a local restaurant). memories. Prof. Thawatchai was equally at home working on ecological projects. In particular, he published Kongkanda Chayamarit & David A. Simpson an outstanding article on vegetation types in