Thai Forest Bulletin (Botany) <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> en-US (Dr. Rachun Pooma) (Miss Nannapat Pattharahirantricin) Thu, 11 Jul 2019 15:43:08 +0700 OJS 60 Chromosome counts and karyotype reports from Fimbristylis (Cyperaceae) in Thailand <p>The somatic chromosome numbers and karyotype of Thai <em>Fimbristylis</em> species were determined from root tips. The chromosome counts and karyotype formulae are 2n=20 (16m+4sm) for <em>F. argentea</em>, 2n=26 (2M+10m+14sm) for<em> F. dichotoma</em>, 2n=4 (2m+2sm) for <em>F. pubisquama</em>, 2n=10 (6m+4sm) for <em>F. insignis</em>, 2n=10 (8m+2sm) for <em>F. eragrostis</em>, <em>F. fusca</em>, <em>F. littoralis</em>, <em>F. ovata</em> and <em>F. umbellaris</em>, and 2n=10 (4m+6sm) for <em>F. thomsonii</em>. Chromosome numbers of <em>F. eragrostis</em>, <em>F. fusca</em>, <em>F. insignis</em>, <em>F. pubisquama</em> and <em>F. thomsonii</em> are newly reported. The present study determined several karyotype asymmetry values. In addition, correlation between the karyotype asymmetry values were shown in this study. The dispersion diagram was found based on A1 and A2. The Stebbins categories of <em>Fimbristylis</em> investigated taxa were 3A, 4A and 4B.</p> Wilailux Zumstein, Kamolhathai Wangwasit ##submission.copyrightStatement## Thu, 11 Jul 2019 15:46:27 +0700 Gentiana bolavenensis (Gentianaceae), a new species from Dong Hua Sao National Protected Area in southern Laos <p>A new species of <em>Gentiana</em>, <em>Gentiana bolavenensis</em> (Gentianaceae) is described from Dong Hua Sao National Protected Area in southern Laos, with photographs, a vernacular name and a preliminary conservation status.</p> Ai Nagahama, Shuichiro Tagane, Phetlasy Souladeth, Anousone Sengthong, Tetsukazu Yahara ##submission.copyrightStatement## Fri, 19 Jul 2019 13:34:58 +0700 Two new species and one new record of Dichapetalum (Dichapetalaceae) in Thailand <p>Two new species and one new record of <em>Dichapetalum</em> (Dichapetalaceae) are reported for Thailand. <em>Dichapetalum</em> <em>khaoluangense</em> from Khao Luang National Park, Nakhon Si Thammarat Province and <em>D. ranongense</em> from Khlong Na Kha Wildlife Sanctuary, Ranong Province are described and illustrated. <em>Dichapetalum cambodianum</em> is recorded in Trat Province.</p> Shuichiro Tagane, Sukid Ruengruea, Hidetoshi Nagamasu, Somran Suddee ##submission.copyrightStatement## Fri, 02 Aug 2019 09:28:31 +0700 Lithocarpus gigantophyllus (Fagaceae), a new record from Loei province (Thailand) <p>A new record for the Flora of Thailand is reported, <em>Lithocarpus gigantophyllus</em>. The new record was discovered among Thai herbarium specimens during the Fagaceae Identification and Red Listing workshop, organised by BGCI and Pha Tad Ke Botanical Garden in Luang Prabang, Laos. For this species we provide colour images and a description of the collecting locality together with a morphological analysis and an updated key for the <em>Lithocarpus</em> species found in Thailand. The species is unique for Thailand in having a combination of large leaves, infructescences with variably developed cupules arranged in clumps, depressed, turbinate acorns with broad scars and golden silky hairs inside the cupules.</p> Joeri Sergej Strijk, Hoang Thanh Son ##submission.copyrightStatement## Tue, 17 Sep 2019 09:41:36 +0700 On scientific requirements for presentation of "new records": the case of Dendrobium ruckeri (Orchidaceae) <p>How detailed and explicit should information presented in a “new record” account be to make the new record officially acceptable,&nbsp;and what kind of documentation is required? In recent years, this question has come to prominence, for example, due to the increasing&nbsp;rate with which new national taxon records are appearing in popular orchid field guides. The scientifically deficient publication of&nbsp;such “new records” precludes the alleged occurrences in Thailand from becoming formally accepted in the scientific literature – and&nbsp;the species in question from being considered for conservation in Thailand. To demonstrate the problem in detail, we present the case&nbsp;of <em>Dendrobium ruckeri</em>. First, we outline the historical introduction and occurrence of this species in the Thai botanical literature,&nbsp;and then provide a full taxonomic account, in effect demonstrating what we think a proper “new record” account should include. To&nbsp;avoid continued confusion over scientifically deficient new records, we urge non-professional botanists to properly document any new national record, supported by voucher specimens, and to publish their find in collaboration with appropriate professional botanists&nbsp;before including the newly discovered taxon in a field guide, or any other popular publication.</p> Wirata Rujichaipimon, Henrik Æ. Pedersen, Orporn Phueakkhlai, Somran Suddee, Sarawood Sungkaew, Paweena Traiperm ##submission.copyrightStatement## Fri, 27 Sep 2019 08:11:35 +0700 The genus Prismatomeris (Rubiaceae) in Thailand <p>A synopsis of the genus <em>Prismatomeris</em> in Thailand is presented. Eight species are recognized and <em>P. glabra</em> is newly recorded for Thailand; <em>P. tetrandra</em> subsp. <em>malayana</em> is no longer recognized as a distinct taxon. Descriptions of the genus and the newly recorded species are provided, as well as a key to the Thai species and notes on ecology, distribution, vernacular names and photographs.</p> Pranom Chantaranothai ##submission.copyrightStatement## Mon, 30 Sep 2019 10:31:20 +0700 Three new species, lectotypifications and synonymisations in Millettia (Fabaceae: Faboideae) for Thailand <p>During preparation of the account of the genus <em>Millettia</em> (Fabaceae: Faboideae) for the Flora of Thailand, some new field collections and specimens from herbaria were found to represent three new species, and here they are described and illustrated with a distribution map. Lectotypes of <em>Millettia</em> names are designated for nine species, five new synonyms of <em>Millettia</em> are proposed and <em>Millettia tecta</em> is raised to species status.</p> <p><em>&nbsp;</em></p> Sawai Mattapha, Felix Forest, Julie A. Hawkins, Somran Suddee, Naiyana Tetsana, Pranom Chantaranothai ##submission.copyrightStatement## Fri, 11 Oct 2019 13:16:56 +0700 A new combination and typifications in Morinda (Rubiaceae) for the Flora of Thailand <p><em>Morinda talmyi</em> is a new combination proposed here for <em>M. persicifolia</em> var. <em>talmyi</em>. <em>Morinda pandurifolia</em> is confirmed as a synonym of <em>M. persicifolia</em>. Lectotypes for <em>Morinda angustifolia</em> var. <em>scabridula</em>, <em>M. longifolia</em>, <em>M. nana</em>, <em>M. pandurifolia</em> var. <em>tenuifolia</em>, <em>M. persicifolia</em> var. <em>talmyi</em>, <em>M. pumila</em> and <em>M. scabrida</em> are designated here.</p> Pranom Chantaranothai ##submission.copyrightStatement## Fri, 18 Oct 2019 09:11:47 +0700 Heterostemma succosum (Apocynaceae), a new record for Laos <p><em>Heterostemma succosum</em> is reported as a new record for Laos. A description and an illustration are provided.</p> Woranart Thammarong, Charun Maknoi, Prateep Panyadee ##submission.copyrightStatement## Fri, 18 Oct 2019 09:27:49 +0700 The identity of Periploca cordata (Apocynaceae) <p>While revising the genus <em>Cosmostigma</em> for the Flora of Thailand it became clear that <em>Cosmostigma cordatum</em>, based on <em>Periploca&nbsp;cordata</em>, is a synonym of <em>Pentatropis capensis</em>. Consequently, <em>Cosmostigma racemosu</em>m is the name to be used for the only species&nbsp;of <em>Cosmostigma</em> occurring in Thailand. <em>Cosmostigma racemosum</em>, <em>Pentatropis capensi</em>s and <em>Periploca cordata</em> are typified.</p> Michele Rodda ##submission.copyrightStatement## Tue, 05 Nov 2019 09:59:47 +0700 Amomum spathilabium (Zingiberaceae: Alpinieae), a new species from northern Thailand <p><em>Amomum spathilabium</em>, a new species from Nan Province in northern Thailand, is described and illustrated. It is closely related to <em>A. subcapitatum</em> but differs in the labellum shape, anther crest shape and longer ligule. Details on distribution, ecology, etymology, and a preliminary conservation assessment are provided.</p> Wittaya Kaewsri, Supanath Kanjanawattanawong ##submission.copyrightStatement## Tue, 12 Nov 2019 08:25:25 +0700 A review of the Calanthe group (Orchidaceae) in Myanmar <p>A review of the <em>Calanthe</em> group in Myanmar is presented, comprising the representatives of the genera <em>Calanthe</em>, <em>Cephalantheropsis</em> and <em>Phaius</em>. Currently there are 28 <em>Calanthe</em> species, 2 <em>Cephalantheropsis </em>species and 6 <em>Phaius</em> species known in the country. An identification key to the species, short descriptions as well as brief notes on distribution and ecology are given, and colour photographs of several species are also provided. <em>Calanthe lamellosa</em> Rolfe is newly reported for Myanmar.</p> Hubert Kurzweil, Paul Ormerod ##submission.copyrightStatement## Tue, 19 Nov 2019 11:35:27 +0700 Five new species of Platostoma (Lamiaceae) from North-Eastern Thailand <p><em>Platostoma albiflorum</em>, <em>P. busbanianum</em>, <em>P. hemratianum</em>, <em>P. ovatum</em> and <em>P.</em>&nbsp;<em>parnellianum</em>, five new species from North-Eastern Thailand are described and illustrated. A key to the 23 species of <em>Platostoma</em> found in Thailand is also provided.</p> Somran Suddee, Alan Paton, John Parnell, Pachock Puudjaa, Wittawat Keiwbang, Sukid Rueangruea ##submission.copyrightStatement## Thu, 21 Nov 2019 10:29:27 +0700 A checklist of Acanthaceae subfamily Nelsonioideae in Thailand <p>A checklist of Acanthaceae subfamily Nelsonioideae in Thailand is presented. Two genera (<em>Nelsonia</em> and <em>Staurogyne</em>) and 29 species are considered native to Thailand, including new species <em>Staurogyne kaengkrachanense</em>. Ecological and distributional data, together with a key to the species, are provided.</p> Thiamhathai Choopan, Paul Joseph Grote, Kongkanda Chayamarit, David Alan Simpson ##submission.copyrightStatement## Thu, 28 Nov 2019 09:59:02 +0700 Bulbophyllum seidenfadenii (Orchidaceae), a new record for Thailand <p><em>Bulbophyllum seidenfadenii</em>, a new record from Phitsanulok Province, northern Thailand, is described and illustrated. The species is characterised by having 1-leaved, compressed-subglobose pseudobulbs, a few flowered sub-umbellate inflorescence, and small pale yellow flowers with dark reddish-purple pustulate sepals and petals, and a yellow projection on the column below the stigmatic cavity.</p> Thitiporn Pingyot, Piyakaset Suksathan, Nawin Inthakul ##submission.copyrightStatement## Mon, 02 Dec 2019 10:47:03 +0700 Two new species of Xylopia (Annonaceae) from peninsular Thailand <p>Two previously undescribed species of <em>Xylopia</em> are documented from southern Thailand. <em>Xylopia niyomdhamii</em> is known from a small peat swamp area in Narathiwat Province. <em>Xylopia microcalyx</em> is restricted to the limestone region extending from Chumphon south to Trang and Phatthalung Provinces, an area with many other endemic Annonaceae species. We found that <em>X. malayana</em> <em>s.s.</em>, although previously reported, is not present in the Thai flora. A key to <em>X. malayana</em> <em>s.s.</em> and the Thai species of <em>Xylopia</em> is presented to summarize our taxonomic changes.</p> David M. Johnson, Nancy A. Murray ##submission.copyrightStatement## Fri, 06 Dec 2019 00:00:00 +0700