Thai Forest Bulletin (Botany) 2020-03-12T13:11:14+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> Contributions to the Flora of Myanmar V: a new record of Mallotus tokiae (Euphorbiaceae) with the description of flower morphology from Lampi Island 2020-01-10T13:53:15+07:00 Hironori Toyama Mu Mu Aung Shuichiro Tagane Akiyo Naiki Somran Suddee Hidetoshi Nagamasu Ai Nagahama Swe Swe Win Nobuyuki Tanaka Tetsukazu Yahara <p><em>Mallotus tokiae</em> (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.</p> 2020-01-10T12:57:31+07:00 Copyright (c) 2020 Forest Herbarium Cytogenetic verification of Curcuma candida (Zingiberaceae) from Thailand and Myanmar 2020-01-29T15:44:17+07:00 Nattapon Nopporncharoenkul Thaya Jenjittikul Ngarmnij Chuenboonngarm Kesara Anamthawat-Jónsson Puangpaka Umpunjun <p><em>Curcuma candida</em> is a conservation-vulnerable species, rare and endemic to the Tenasserim Range (Thio Khao Tanaosri). This species was initially classified into the genus <em>Kaempferia</em>, based on morphology of specimen from Myanmar, and was given the name <em>K. candida</em> in 1830, but the first specimen from Thailand was only discovered in 2000. With the addition of molecular evidence, the species was transferred to <em>Curcuma</em>. The aim of the present study was therefore to find cytogenetic identity of <em>C. candida</em>, by investigating mitotic and meiotic divisions of five accessions obtained from the border districts of Thailand and Myanmar, in comparison with previous cytogenetic records of <em>Curcuma</em> and <em>Kaempferia</em>. The results show that <em>C. candida</em> is diploid with <em>2n</em> = 42 and there is no variation among accessions. All accessions showed meiotic figure representing 21 bivalents during microsporogenesis, indicating the secondary base number <em>x</em> = 21. These chromosomal characteristics are closely similar to those found in diploid <em>Curcuma</em> species. The present paper also includes field observation and description of the plant phenology. The work has underlined an urgent need to protect this species in nature. During the sample collection trips we witnessed an excessive collection of edible flowers for local consumption.</p> 2020-01-29T00:00:00+07:00 Copyright (c) 2020 Forest Herbarium Two new genera of Apocynaceae for Laos 2020-02-05T07:33:34+07:00 Michele Rodda <p>Examination of unidentified Apocynaceae specimens at QBG and SING lead to the discovery of one specimen of <em>Meladerma deciduum</em> and two specimens of <em>Harmandiella cordifolia</em> from Laos. <em>Harmandiella</em> was earlier considered endemic to Thailand and Vietnam while <em>Meladerma</em> was earlier reported from Thailand and Peninsular Malaysia. <em>Harmandiella cordifolia</em> and <em>Meladerma deciduum</em> are typified.</p> 2020-02-05T07:33:31+07:00 Copyright (c) 2020 Forest Herbarium Leontopodium andersonii (Asteraceae), a new genus record to Thailand 2020-02-21T10:49:18+07:00 Wanniga Munsuk Piyakaset Suksathan Pimwadee Pornpongrungrueng <p><em>Leontopodium</em> <em>andersonii</em> is here for the first time recorded for Thailand, and is also the first record of the genus <em>Leontopodium</em> (Asteraceae) in Thailand. A description and an illustration are provided.</p> 2020-02-21T08:39:14+07:00 Copyright (c) 2020 Forest Herbarium Taxonomic notes on the genus Alphonsea (Annonaceae) in Thailand 2020-02-25T14:49:47+07:00 Charan Leeratiwong Piya Chalermglin David Johnson <p>The following four species in the genus <em>Alphonsea</em> (Annonaceae) are new records for Thailand: <em>Alphonsea glandulosa</em>, <em>A. kingii</em>, <em>A. lucida</em> and <em>A. malayana</em>. <em>Alphonsea lutea</em> var. <em>longipes</em> is reduced to a taxonomic synonym of <em>A. glandulosa</em>. The reinstatement of <em>A. pallida</em> is proposed and explained. Complete descriptions are provided here for both <em>A. pallida</em> and <em>A. siamensis</em> following the recent discovery of the fruits of the former and the flowers of the latter. Descriptions of all taxa with notes on their distribution, ecology, vernacular names and photographs are also provided.</p> 2020-02-25T14:48:44+07:00 Copyright (c) 2020 Forest Herbarium Diospyros phuwuaensis (Ebenaceae), a new species from North-Eastern Thailand 2020-03-10T15:03:55+07:00 Sutee Duangjai Sukid Rueangruea Thamarat Phutthai David Middleton Somran Suddee <p><em>Diospyros phuwuaensis</em>, a new species from Phu Wua Wildlife Sanctuary, North-Eastern Thailand is described and illustrated. Photographs, ecological information and an IUCN conservation status are provided. The distinctive morphological characters of the new species and its related species are discussed. Based on cpDNA data, the new species is confirmed as an independent lineage and placed in the <em>Diospyros</em> clade V sensu Duangjai et al. (2009). It has phylogenetic affinities with <em>Diospyros mollis</em>, and then <em>D. fulvopilosa</em> and <em>D. kurzii</em>. Our result supports the assignment of the new species to <em>Diospyros</em> section <em>Kurzella</em>. A revised description and a key to the species of <em>Diospyros</em> section <em>Kurzella</em> is presented.</p> 2020-03-10T14:50:58+07:00 Copyright (c) 2020 Forest Herbarium Staurogyne beddomei (Acanthaceae), a new record for Thailand 2020-03-11T09:10:20+07:00 Thiamhathai Choopan Sarawood Sungkaew Nopparut Toolman Somran Suddee <p><em>Staurogyne beddomei</em>, a species known previously only from Myanmar, is newly recorded for Thailand. A description, photographs and conservation status are provided - the species is considered to be of Least Concern.</p> 2020-03-11T09:10:19+07:00 Copyright (c) 2020 Forest Herbarium Impatiens capillipes (Balsaminaceae), a new record for Thailand 2020-03-11T11:51:11+07:00 Saroj Ruchisansakun Pramote Triboun Piyakaset Suksathan <p><em>Impatiens capillipes</em> was found for the first time in Thailand. The population in Thailand has slightly larger leaves and flowers than the population in Myanmar. An expanded description of this species and colour photographs are provided.</p> 2020-03-11T09:40:38+07:00 Copyright (c) 2020 Forest Herbarium Notes on Uraria (Leguminosae: Papilionoideae: Desmodieae) from Thailand and Vietnam 2020-03-12T13:11:14+07:00 Worachat Tokaew Pranom Chantaranothai Henrik Balslev Kamolhathai Wangwasit <p><em>Uraria balansae</em> and <em>U. barbaticaulis</em> are newly recorded from Thailand. <em>Uraria pseudoacuminata</em> is reported as new for Vietnam. Descriptions, ecological data, vernacular names, photographs and distribution maps are provided. <em>Uraria balansae</em> is lectotypified.</p> 2020-03-12T13:11:14+07:00 Copyright (c) 2020 Forest Herbarium