Thai Forest Bulletin (Botany) 2019-12-06T09:35:14+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> Chromosome counts and karyotype reports from Fimbristylis (Cyperaceae) in Thailand 2019-07-11T15:46:28+07:00 Wilailux Zumstein Kamolhathai Wangwasit <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> 2019-07-11T15:46:27+07:00 ##submission.copyrightStatement## Gentiana bolavenensis (Gentianaceae), a new species from Dong Hua Sao National Protected Area in southern Laos 2019-07-19T13:34:59+07:00 Ai Nagahama Shuichiro Tagane Phetlasy Souladeth Anousone Sengthong Tetsukazu Yahara <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> 2019-07-19T13:34:58+07:00 ##submission.copyrightStatement## Two new species and one new record of Dichapetalum (Dichapetalaceae) in Thailand 2019-08-02T09:28:32+07:00 Shuichiro Tagane Sukid Ruengruea Hidetoshi Nagamasu Somran Suddee <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> 2019-08-02T09:28:31+07:00 ##submission.copyrightStatement## Lithocarpus gigantophyllus (Fagaceae), a new record from Loei province (Thailand) 2019-09-17T09:41:37+07:00 Joeri Sergej Strijk Hoang Thanh Son <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> 2019-09-17T09:41:36+07:00 ##submission.copyrightStatement## On scientific requirements for presentation of "new records": the case of Dendrobium ruckeri (Orchidaceae) 2019-09-27T08:11:36+07:00 Wirata Rujichaipimon Henrik Æ. Pedersen Orporn Phueakkhlai Somran Suddee Sarawood Sungkaew Paweena Traiperm <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> 2019-09-27T08:11:35+07:00 ##submission.copyrightStatement## The genus Prismatomeris (Rubiaceae) in Thailand 2019-09-30T15:41:09+07:00 Pranom Chantaranothai <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> 2019-09-30T10:31:20+07:00 ##submission.copyrightStatement## Three new species, lectotypifications and synonymisations in Millettia (Fabaceae: Faboideae) for Thailand 2019-10-11T15:04:17+07:00 Sawai Mattapha Felix Forest Julie A. Hawkins Somran Suddee Naiyana Tetsana Pranom Chantaranothai <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> 2019-10-11T13:16:56+07:00 ##submission.copyrightStatement## A new combination and typifications in Morinda (Rubiaceae) for the Flora of Thailand 2019-10-18T11:01:52+07:00 Pranom Chantaranothai <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> 2019-10-18T09:11:47+07:00 ##submission.copyrightStatement## Heterostemma succosum (Apocynaceae), a new record for Laos 2019-10-18T09:27:49+07:00 Woranart Thammarong Charun Maknoi Prateep Panyadee <p><em>Heterostemma succosum</em> is reported as a new record for Laos. A description and an illustration are provided.</p> 2019-10-18T09:27:49+07:00 ##submission.copyrightStatement## The identity of Periploca cordata (Apocynaceae) 2019-11-05T09:59:47+07:00 Michele Rodda <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> 2019-11-05T09:59:47+07:00 ##submission.copyrightStatement## Amomum spathilabium (Zingiberaceae: Alpinieae), a new species from northern Thailand 2019-11-12T08:25:26+07:00 Wittaya Kaewsri Supanath Kanjanawattanawong <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> 2019-11-12T08:25:25+07:00 ##submission.copyrightStatement## A review of the Calanthe group (Orchidaceae) in Myanmar 2019-11-19T11:45:01+07:00 Hubert Kurzweil Paul Ormerod <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> 2019-11-19T11:35:27+07:00 ##submission.copyrightStatement## Five new species of Platostoma (Lamiaceae) from North-Eastern Thailand 2019-11-21T12:34:33+07:00 Somran Suddee Alan Paton John Parnell Pachock Puudjaa Wittawat Keiwbang Sukid Rueangruea <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> 2019-11-21T10:29:27+07:00 ##submission.copyrightStatement## A checklist of Acanthaceae subfamily Nelsonioideae in Thailand 2019-11-28T09:59:04+07:00 Thiamhathai Choopan Paul Joseph Grote Kongkanda Chayamarit David Alan Simpson <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> 2019-11-28T09:59:02+07:00 ##submission.copyrightStatement## Bulbophyllum seidenfadenii (Orchidaceae), a new record for Thailand 2019-12-02T13:03:40+07:00 Thitiporn Pingyot Piyakaset Suksathan Nawin Inthakul <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> 2019-12-02T10:47:03+07:00 ##submission.copyrightStatement## Two new species of Xylopia (Annonaceae) from peninsular Thailand 2019-12-06T09:35:14+07:00 David M. Johnson Nancy A. Murray <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> 2019-12-06T00:00:00+07:00 ##submission.copyrightStatement##