https://li01.tci-thaijo.org/index.php/ThaiForestBulletin <p>Thai Forest Bulletin (Botany) - here referred to as TFB (Botany) - 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. Tim Utteridge and Ms Nannapat Pattharahirantricin as editors. The journal is published once a year, usually January 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. 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 (print), 2465-423x (electronic)</p> Forest Herbarium (BKF) en-US Thai Forest Bulletin (Botany) 0495-3843 https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/268057 <p>The genus <em>Thismia</em> in Bokor National Park, Cambodia has been studied based on literature and recent collections from field surveys. Three species are recorded including <em>T. bokorensis</em>, <em>T. filiformis</em>, and <em>T. gardneriana</em>, all belonging to sect. <em>Thismia</em>. A key to species of the genus <em>Thismia </em>in Cambodia, descriptions and photographs of <em>T. filiformis</em>, and <em>T. gardneriana</em> are provided. In addition, the preliminary conservation status was assessed following the International Union for Conservation of Nature (IUCN) Red List criteria.</p> Savin Kin Alisa Nakkaew Sahut Chantanaorrapint Copyright (c) 2026 The Forest Herbarium http://creativecommons.org/licenses/by-nc-nd/4.0 2026-07-08 2026-07-08 54 2 76 83 10.20531/tfb.2026.54.2.08 https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/269129 <p>In this synopsis of the genus <em>Lepidagathis </em>for the Flora of Thailand, nine species are recognized. This includes <em>Lepidagathis argentea</em>, a new species collected from limestone bedrock in Tak Province, and three species newly recorded for Thailand, <em>L. dulcis</em>, <em>L. purpuricaulis</em> and <em>L. thorelii</em>. <em>Lepidagathis chiengmaiensis</em> and <em>L. thyrsiflora</em>, are reduced to synonyms of <em>L. incurva</em> and <em>L. </em><em>fasciculata</em>, respectively. The following names have been lectotypified: <em>Lepidagathis chiengmaiensis</em>, <em>L. chlorostachya</em>, <em>L. dissimilis</em>, <em>L. dulcis</em>,<em> L. falcata</em> and <em>L. thorelii</em>. A genus description with key to species, nomenclatural notes, distributional data and specimens examined are provided.</p> Chortip Kantachot Pranom Chantaranothai Copyright (c) 2026 The Forest Herbarium http://creativecommons.org/licenses/by-nc-nd/4.0 2026-07-02 2026-07-02 54 2 64 75 10.20531/tfb.2026.54.2.07