A revision of Beilschmiedia (Lauraceae) for Thailand and Indochina

Abstract

A revision of the genus Beilschmiedia (Lauraceae) from Thailand and Indochina is presented with a summary of its taxonomic history, plus keys, full descriptions of each species, distribution maps, conservation assessments, ecological information, ethno-botanical notes and a discussion of its morphology. In this treatment, 21 species are recognized; 14 names are lectotypified (B. argentata, B. balansae, B. balansae var. muticarpa, B. clarkei, B. elegantissima, B. ferruginea, B. globularia, B. glomerata var. tonkinensis, B. lucidula, B. obovalifoliosa, B. palembanica, B. poilanei, B. sphaerocarpa and B. wightii), five names are placed into synonymy for the first time, and B. laotica Kosterm. ex de Kok is validly published here for the first time. In addition, one new variety (B. percoriacea var. percoriacea de Kok) is proposed and one new combination (B. percoriacea var. glaucoides de Kok) is made. Nine species are considered to be Least Concern, one is Critically Endangered, five are Endangered, and five are listed as Vulnerable.

Beilschmiedia danhkyii (Lauraceae), a new species from Vu Quang National Park, Vietnam

“…A detailed comparison between these species is shown in Table 1. Lecomte (1913Lecomte ( , 1914, Liu (1932), andde Kok (2021) and their type specimens.…”

“…Beilschmiedia Nees von Esenbeck (1831: 61, 69), with currently about 200-300 species, is a genus of trees or shrubs of the family Lauraceae distributed widely in most of tropical and subtropical region, with center of diversity in Southeast Asia or Africa (van der Werff 2001, Nishida 2008, de Kok 2021. In Vietnam, Nguyen (2017) enumerated 28 species, among which five are endemic to the country, and more recently, de Kok (2021) treated 12 species including two endemic species for the flora of Vietnam in his revision of Beilschmiedia in Thailand and Indochina.…”