Thai Forest Bulletin (Botany) https://li01.tci-thaijo.org/index.php/ThaiForestBulletin <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> Forest Herbarium (BKF) en-US Thai Forest Bulletin (Botany) 0495-3843 Rhynchoglossum ausculum (Gesneriaceae), a new species from South-Western Thailand https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/249876 <p>The new species of <em>Rhynchoglossum</em> <em>ausculum</em>, from South-Western Thailand is described and illustrated. An emended key to the Thai species of <em>Rhynchoglossum</em> is provided.</p> Nannapat Pattharahirantricin Manop Poopath Copyright (c) 2021 Forest Herbarium http://creativecommons.org/licenses/by-nc-nd/4.0 2021-07-24 2021-07-24 49 2 157 162 10.20531/tfb.2021.49.2.01 Additions to Annonaceae in the Flora of Thailand https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/248520 <p>Work toward completion of the Annonaceae treatment for the Flora of Thailand revealed 18 species previously unrecorded for the country, six of them in the genus <em>Fissistigma</em>. In addition, several species previously placed in synonymy are re-instated, for which we propose three new combinations in the genera <em>Mitrella</em>, <em>Monoon</em>, and <em>Sphaerocoryne</em>.</p> David M. Johnson Pasakorn Bunchalee Piya Chalermglin Pranom Chantaranothai Charan Leeratiwong Nancy A. Murray Richard Saunders Yotsawate Sirichamorn Yvonne Su Phanom Sutthisaksopon Copyright (c) 2021 Forest Herbarium http://creativecommons.org/licenses/by-nc-nd/4.0 2021-07-28 2021-07-28 49 2 163 172 10.20531/tfb.2021.49.2.02 The genus Phyllocyclus (Gentianaceae) in Thailand https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/248904 <p>An account of the genus <em>Phyllocyclus</em> (Gentianaceae) for Thailand is presented. Three species are recognized, including two recently reported species, <em>Phyllocyclus petelotii</em> and <em>P. parishii</em>. A key to the Thai species, descriptions, illustrations, and conservation status are provided.</p> Kotchaphan Sisakhon Kongkanda Chayamarit Narong Wongkantrakorn David Middleton Wittawat Kiewbang Watchara Salee Srunya Vajrodaya Copyright (c) 2021 Forest Herbarium http://creativecommons.org/licenses/by-nc-nd/4.0 2021-09-10 2021-09-10 49 2 173 177 10.20531/tfb.2021.49.2.03 Torenia maculata (Linderniaceae), a new record for Thailand https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/248961 <p><em>Torenia maculata</em>, is a newly recorded species for Thailand. A description, illustrations and comments on its ecology and distribution are provided.</p> Phanom Sutthisaksopon Pranom Chantaranothai Somran Suddee Copyright (c) 2021 Forest Herbarium http://creativecommons.org/licenses/by-nc-nd/4.0 2021-09-15 2021-09-15 49 2 178 181 10.20531/tfb.2021.49.2.04 Twelve new records of Pteridophytes from Bolaven Plateau, southern Laos https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/249046 <p>Twelve pteridophytes from six families are reported from the Bolaven Plateau, southern Laos, as new records to the flora of Laos. For each species, voucher specimens, photographs and additional information including geographical distribution, ecology and taxonomic notes are provided.</p> Thyraphon Vongthavone Shuichiro Tagane PHONGPHAYBOUN PHONEPASEUTH KEOOUDONE SOUVANNAKHOUMMANE Phetlasy Souladeth Copyright (c) 2021 Forest Herbarium http://creativecommons.org/licenses/by-nc-nd/4.0 2021-09-30 2021-09-30 49 2 182 190 10.20531/tfb.2021.49.2.05 Two new species and a new record of Begonia (Begoniaceae) from Vangvieng karst limestone in central Laos https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/250297 <p><em>Begonia cataracta</em> and <em>B. voluptuaria</em> are described as new species and <em>B. incerta</em> is noted as a new record for Laos. Descriptions, illustrations and photographs are provided for the new species and photographs for the new record. Preliminary conservation assessments are made for the two new species which are assessed as Vulnerable and Critically Endangered respectively.</p> Soulivanh Lanorsavanh Keooudone Souvannakhoummane Vichith Lamxay Khamfa Chanthavongsa Copyright (c) 2021 Forest Herbarium http://creativecommons.org/licenses/by-nc-nd/4.0 2021-10-11 2021-10-11 49 2 191 200 10.20531/tfb.2021.49.2.06 Begonia sirindhorniana (Begoniaceae) a new species from Thailand https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/250819 <p><em>Begonia sirindhorniana</em>, a new species from South-Western Thailand is described and illustrated.</p> Thamarat Phutthai Theerawat Thananthaisong Kunanon Daonurai Priwan Srisom Somran Suddee Mark Hughes Copyright (c) 2021 Forest Herbarium http://creativecommons.org/licenses/by-nc-nd/4.0 2021-10-11 2021-10-11 49 2 201 205 10.20531/tfb.2021.49.2.07 The genus Gaertnera (Rubiaceae) in Thailand https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/249935 <p>Two species of <em>Gaertnera</em> in Thailand, viz. <em>G. junghuhniana</em> and <em>G. sralensis</em>, are enumerated and described. A lectotype is designated for <em>G. taiensis</em>, a synonym of <em>G. junghuhniana</em>. A key to species and data on distribution, habit and phenology are also provided.</p> Khanit Wangwasit Kamolhathai Wangwasit Copyright (c) 2021 Forest Herbarium http://creativecommons.org/licenses/by-nc-nd/4.0 2021-10-15 2021-10-15 49 2 206 211 10.20531/tfb.2021.49.2.08