Thai Forest Bulletin (Botany)

Rhynchoglossum ausculum (Gesneriaceae), a new species from South-Western Thailand

2021-07-24T10:19:56+07:00

The new species of Rhynchoglossum ausculum, from South-Western Thailand is described and illustrated. An emended key to the Thai species of Rhynchoglossum is provided.

Additions to Annonaceae in the Flora of Thailand

2021-07-30T13:28:50+07:00

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 Fissistigma. In addition, several species previously placed in synonymy are re-instated, for which we propose three new combinations in the genera Mitrella, Monoon, and Sphaerocoryne.

The genus Phyllocyclus (Gentianaceae) in Thailand

2021-09-10T11:44:54+07:00

An account of the genus Phyllocyclus (Gentianaceae) for Thailand is presented. Three species are recognized, including two recently reported species, Phyllocyclus petelotii and P. parishii. A key to the Thai species, descriptions, illustrations, and conservation status are provided.

Torenia maculata (Linderniaceae), a new record for Thailand

2021-09-15T14:42:24+07:00

Torenia maculata, is a newly recorded species for Thailand. A description, illustrations and comments on its ecology and distribution are provided.

Twelve new records of Pteridophytes from Bolaven Plateau, southern Laos

2021-10-01T15:02:21+07:00

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.

Two new species and a new record of Begonia (Begoniaceae) from Vangvieng karst limestone in central Laos

2021-10-11T09:16:28+07:00

Begonia cataracta and B. voluptuaria are described as new species and B. incerta 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.

Begonia sirindhorniana (Begoniaceae) a new species from Thailand

2021-10-11T13:48:17+07:00

Begonia sirindhorniana, a new species from South-Western Thailand is described and illustrated.

The genus Gaertnera (Rubiaceae) in Thailand

2021-10-15T13:12:24+07:00

Two species of Gaertnera in Thailand, viz. G. junghuhniana and G. sralensis, are enumerated and described. A lectotype is designated for G. taiensis, a synonym of G. junghuhniana. A key to species and data on distribution, habit and phenology are also provided.

New species and new records for the climber genus Friesodielsia (Annonaceae) in the flora of Thailand

2021-10-25T11:37:19+07:00

Six new species of Friesodielsia (Annonaceae) are described and illustrated, seven species are documented for Thailand for the first time, and Oxymitra fornicata var. glabra is raised to species rank as Friesodielsia andamanica. These additions bring the species diversity of Friesodielsia in Thailand to 16 species. A key to the Thai species is provided.

Akaniaceae, a new family record for Laos

2021-10-25T16:03:33+07:00

A collection from Phou Chom Voy Provincial Protected Area, Bolikhamxai, represents the first records for the family Akaniaceae as well as the genus Bretschneidera and the species Bretschneidera sinensis in Laos. Here we report the new and extended distributional range. A detailed description and photographs are provided for easy identification.

Notes on the genus Ardisia (Primulaceae) in Thailand and Peninsular Malaysia

2021-11-25T13:11:26+07:00

The lectotype for Ardisia kerrii is designated here. Ardisia cordulata var. appresso-hirsuta is placed as a new synonym of A. demissa. Additionally, the correct locations of four species that were misinterpreted are also given. Now A. betongensis is excluded from the list of Thai Ardisia.

Uvaria clementis (Annonaceae), a new record for Thailand

2021-11-25T15:54:23+07:00

A new species record for Thailand, Uvaria clemantis is discovered from Khao Luk Lom Mountain, Rattaphum District, Songkhla Province. A description and photographs are provided.

Comments on the typification of two names in Bauhinia, now under Phanera (Leguminosae: Cercidoideae)

2021-12-27T08:53:07+07:00

A lectotype is designated here for Bauhinia cardinalis, the basionym of Phanera cardinalis and a second-step lectotype is designated here for B. penicilliloba, the basionym of P. penicilliloba.

The genus Pseudoraphis (Poaceae) in Thailand

2021-12-27T10:50:19+07:00

A taxonomic study of the genus Pseudoraphis in Thailand was conducted. Four species, P. balansae, P. brunoniana, P. minuta and P. spinescens are reported. This genus is distributed in the Northern, Eastern, Central, South-Eastern, and Peninsular floristic regions of Thailand. All the species are aquatic or semi-aquatic, found in swampy places, marshes, lakes, paddy fields, ditches, moats and on sandy soils from sea level to 300 m. Morphological descriptions, distribution data, and ecological information are provided. All species are illustrated and a key to the species, based on morphological characters, is provided.