Thai Forest Bulletin (Botany) 2020-12-08T13:45:52+07:00 Dr. Rachun Pooma Open Journal Systems <p>Thai Forest Bulletin (Botany)&nbsp;- here referred to as TFB (Botany) -&nbsp;was first published in 1954 by the Royal Forest Department, under the leadership of its first editor Prof. Dr. Tem Smitinand. In 2002, the journal was published by the Department of National Parks, Wildlife and Plant Conservation with Prof. Dr. Thawatchai Santisuk as editor, supported by editorial board members from several prominent herbaria in Europe. At present, the TFB (Botany) is published by the Forest Herbarium in Bangkok, with Dr. Rachun Pooma and Dr. Tim Utteridge as editors. The journal is published once a year, usually in September-December with the manuscript no submission deadline, and articles are published in English. All manuscripts are peer reviewed by international scientists and edited by native English language speakers on the editorial board before acceptance and publication.&nbsp;TFB (Botany) will become both printed and electronic journal starting with volume 44 (2016), and through the TFB (Botany) Archive, every article published since 1954 is available and completely searchable online.</p> <p>ISSN : 0495-3843&nbsp;(print), 2465-423x (electronic)</p> Obituary: Prof. Dr Thawatchai Santisuk (1944–2020) 2020-11-18T14:22:24+07:00 Kongkanda Chayamarit David A. Simpson 2020-11-18T14:11:05+07:00 Copyright (c) 2020 Forest Herbarium Two new species of Pittosporum (Pittosporaceae) for the Flora of Thailand 2020-07-09T20:59:11+07:00 Timothy M.A. Utteridge <p>Two new species of <em>Pittosporum </em>(Pittosporaceae) are reported for Thailand. <em>Pittosporum lacrymasepalum </em>from Trat Province and <em>P. maxwellii </em>from Doi Inthanon, Chiang Mai Province are described and illustrated.</p> 2020-07-09T08:20:12+07:00 Copyright (c) 2020 Forest Herbarium Psammosilene tunicoides (Caryophyllaceae) a new generic and species record for Thailand 2020-12-08T13:45:52+07:00 Somran Suddee Thamarat Phutthai Naiyana Tetsana Theerawat Thananthaisong Wittawat Kiewbang <p><em>Psammosilene tunicoides</em>, a new generic and species record for Thailand, is reported. The new record was discovered on a degraded calcareous substrate mountain in the western part of Thailand near the Thai-Myanmar border. The species was previously reported to be endemic to SW China. This occurrence in Thailand greatly extends the distribution of the species. A lectotype is designated here.</p> 2020-07-13T15:56:02+07:00 Copyright (c) 2020 Forest Herbarium New records of the genus Psychotria (Rubiaceae) from Thailand 2020-07-15T12:01:33+07:00 Teerawat Srisuk Voradol Chamchumroon Pimwadee Pornpongrungrueng <p>Four species of <em>Psychotria</em> are newly recorded from Thailand: <em>P. bonii</em>, <em>P. griffithii</em>, <em>P. langbianensis</em> and <em>P. pachyphylla</em>. Descriptions and list of synonyms are provided and a lectotype for <em>P. bonii</em> is designated.</p> 2020-07-15T12:01:33+07:00 Copyright (c) 2020 Forest Herbarium Begonia colliculata (Begoniaceae), a new species from Nam Kading National Protected Area, Bolikhamxai province, Laos 2020-07-24T08:08:45+07:00 Keooudone Souvannakhoummane Soulivanh Lanorsavanh Jeong Ho Park Ho Sang Kang Tai Hyeon Ahn Singkone Xayalath Chanhsamone Phongoudom <p><em>Begonia colliculata</em> is described and illustrated with photographs from Nam Kading National Protected Area, in the Bolikhamxai Province of Laos.</p> 2020-07-24T08:08:45+07:00 Copyright (c) 2020 Forest Herbarium Heterostemma brownii (Apocynaceae), a new record for Laos and Thailand 2020-09-24T21:39:43+07:00 Woranart Thammarong Sarayut Rakarcha Michele Rodda <p><em>Heterostemma brownii</em> is reported as a new record for the floras of Laos and Thailand. A lectotype is also designated for the name <em>H. brownii</em>. A description based on Thai and Laos collections, photographs and notes are provided.</p> 2020-07-30T13:20:12+07:00 Copyright (c) 2020 Forest Herbarium The Cenozoic leaf morphotypes and palaeoclimate interpretation from the Doi Ton Formation, Mae Sot District, Tak Province, western Thailand 2020-08-04T09:41:40+07:00 Atiwut Bunlam Yupa Thasod Pitaksit Ditbanjong Rattanaporn Fongngern Paul J. Grote <p>The Cenozoic palaeovegetation and palaeoclimate of Doi Ton, western Thailand, megaflora are reconstructed based on physiognomic climate analysis, including Leaf Margin Analysis (LMA), Leaf Area Analysis (LAA), Leaf Size Index (LSI), Climate Leaf Analysis Multivariate Program (CLAMP), and systematic descriptions of each leaf morphotype. The leaf fossils were divided into 23 dicotyledonous leaf morphotypes and two unknown leaf morphotypes. The mean annual temperature results from LMA indicate 32.3 ± 1.17 °C and CLAMP shows 21.2°C. CLAMP also provides temperature data of a warm month mean temperature (WMMT) of 27.4 °C and a CMMT of 14.2 °C, which is similar to the present climate. The mean annual precipitation is estimated by LAA to be ~ 125 cm. CLAMP suggests precipitation in the 11 months of growing period was 154.9 cm with the three wettest months having precipitation of 73 cm, widely contrasting with 15.5 cm for the three driest months. The precipitation shows the signal of the monsoon effect. The temperature, precipitation, and LSI mirrored the vegetation of the contemporary Doi Ton area which is a semi-evergreen forest in the tropical zone. The palaeoclimatic parameters of Doi Ton are in good agreement with those of south China and northwest<br>India from the Eocene period and the present-day Mae Sot area. Moreover, the Doi Ton flora also closely matches the humid subtropical modern vegetation of south China. Palaeoclimate and vegetation analysis support an Eocene age estimate for the Doi Ton Formation however further independent age estimates are required to test this working hypothesis.</p> 2020-08-03T16:42:45+07:00 Copyright (c) 2020 Forest Herbarium Notes on the typification of five names in Lauraceae 2020-08-22T10:15:23+07:00 Anand Kumar <p>This article deals with inadvertent lectotypifications of five names in the Lauraceae, <em>Cryptocarya densiflora</em>, <em>Cryptocarya impressa</em>, <em>Cylicodaphne infectoria</em>, <em>Laurus cubeba</em> and <em>Litsea castanea</em>, that have been previously overlooked.</p> 2020-08-22T10:15:22+07:00 Copyright (c) 2020 Forest Herbarium A synopsis of Thai Piper (Piperaceae) 2020-08-31T15:38:46+07:00 Chalermpol Suwanphakdee David A. Simpson Trevor R. Hodkinson Pranom Chantaranothai <p>All native and introduced Thai <em>Piper</em> are enumerated to include 46 species and two varieties. Typifications for accepted names and synonyms are made where necessary. Family and generic descriptions, based on Thai collections, are provided. A key to species and varieties and relevant synonymy are also presented. Additional morphological characters for <em>P. smitinandianum</em> are summarised. Data on the distribution, ecology, vernacular names, utilization and collections of each taxon in Thailand are presented in the standard Flora of Thailand format.</p> 2020-08-31T15:38:44+07:00 Copyright (c) 2020 Forest Herbarium Dimetra (Oleaceae), a new genus record for Lao PDR 2020-09-11T13:09:13+07:00 Sarayut Rakarcha Charun Maknoi Wattana Tanming Woranart Thammarong Prateep Panyadee <p>A monotypic genus <em>Dimetra </em>represented by <em>D. craibiana</em> Kerr known to be endemic to Thailand. Presently, the specimen from Xayaburi Province, Lao PDR are reported as newly discovered for Laos PDR. &nbsp;Detailed description and photographs are provided.</p> 2020-09-11T13:09:12+07:00 Copyright (c) 2020 Forest Herbarium Cardamine occulta (Brassicaceae), a new name for the Flora of Thailand 2020-09-29T13:55:49+07:00 Hans-Joachim Esser <p>The common Thai species of <em>Cardamine</em>, treated as <em>C. hirsuta</em> in the Flora of Thailand, is discussed. The correct name should be<em> C. occulta</em> according to recent publications. New data and collections are added.</p> 2020-09-29T13:55:48+07:00 Copyright (c) 2020 Forest Herbarium Geraniaceae in Thailand 2020-10-02T10:11:20+07:00 Piyakaset Suksathan <p>Members of the geranium family (Geraniaceae) native to Thailand are enumerated. Two genera, <em>Geranium</em> (3 species) and <em>Pelargonium</em> (1 species) are recognized. <em>Pelargonium</em> is a new genus record for Thailand and Asia Major (except Asia Minor-Anatolia). Keys to the Thai species, descriptions, information on distribution and ecology, as well as conservation status, are provided.</p> 2020-10-02T10:08:53+07:00 Copyright (c) 2020 Forest Herbarium Terminalia santisukiana (Combretaceae), a new species from North-Eastern Thailand 2020-11-05T11:00:35+07:00 Nannapat Pattharahirantricin Manop Poopath <p>A new species of <em>Terminalia</em>, <em>T. santisukiana</em> (Combretaceae) from fresh water swamp forest in North-Eastern Thailand is described and illustrated. The new species is similar to <em>Terminalia nigrovenulosa</em>, having similar leaves with glands on the leaf margin near the base and paniculate inflorescences, but it is mainly distinguished by the loose panicles with dense indumentum on the flowers and the 4–5-winged fruits. It is also similar to <em>Terminalia polyantha</em>, having 4–5-winged fruits, but differs by the dense indumentum on the flowers and asymmetrical fruits.</p> 2020-11-04T13:28:15+07:00 Copyright (c) 2020 Forest Herbarium Lectotypification of Porpax scaposa (Orchidaceae) 2020-11-16T07:30:35+07:00 Santi Watthana Somran Suddee <p><em>Porpax scaposa</em> is lectotypified. This species is endemic to northern Thailand, and was based on <em>Garrett 717</em> (BKF, K) when published. We here select the Kew sheet, K000913725, as the lectotype.</p> 2020-11-16T07:30:34+07:00 Copyright (c) 2020 Forest Herbarium Stemona fimbritepala (Stemonaceae), a new species from northern Laos 2020-11-17T13:16:07+07:00 Sarayut Rakarcha Wittaya Pongamornkul Woranart Thammarong Charun Maknoi Keooudone Souvannakhoummane <p><em>Stemona fimbritepala</em> (Stemonaceae), a new species from northern Laos, is described and illustrated. It is morphologically similar to <em>S. hirtella</em> and <em>S. kerrii</em> but clearly differs in longer peduncle, longer tepals, longer petaloid outgrowth of the connective and fimbriate margin of inner tepals. A detailed description, distribution, ecology, etymology, preliminary conservation status and photographs of this species are provided. A key to discriminate between the three hairy species is presented.</p> 2020-11-17T13:16:06+07:00 Copyright (c) 2020 Forest Herbarium Ten new species of Globba section Globba from continental South-East Asia 2020-12-04T11:56:26+07:00 Sunisa Sangvirotjanapat Trần Hữu Đăng Mark Newman <p>Ten new species of <em>Globba</em> from Thailand and Vietnam are described and illustrated; <em>Globba amnicola</em>, <em>G. amplectens</em>, <em>G. conferta</em>, <em>G. dasycarpa</em>, <em>G. grandis</em>, <em>G. hilaris</em>, <em>G. impar</em>, <em>G. nitida</em>, <em>G. verecunda</em> and <em>G. williamsiana</em>. Distribution maps and IUCN provisional assessments of each species are provided.</p> 2020-11-20T09:21:01+07:00 Copyright (c) 2020 Forest Herbarium Notes on taxonomy of the genus Argostemma (Rubiaceae) from Vietnam 2020-12-03T15:37:51+07:00 Hai Thi Vu Thanh Trung Nguyen Hung Quang Nguyen Khuong Duy Le Truong Van Do <p><em>Argostemma pictum</em> (Rubiaceae), a species occurring in Myanmar, Thailand, Laos and Peninsular Malaysia, is newly reported for the flora of Vietnam; a description, photographs, information on ecology and taxonomic notes are also presented. In order to facilitate identification, we provide an identification key and checklist to the 10 known <em>Argostemma</em> species in Vietnam.</p> 2020-12-03T10:58:04+07:00 Copyright (c) 2020 Forest Herbarium