Lasianthus rhinocerotis Blume subsp. xishuangbannaensis Zhu & Wang (2002:282)

Napiroon, Tiwtawat, Chayamarit, Kongkanda, Dawson, Sally, Till, Walter & Balslev, Henrik, 2020, A synopsis of Lasianthus (Lasiantheae, Rubiaceae) in Thailand and two additional new species, Phytotaxa 439 (1), pp. 1-38 : 27

publication ID	https://doi.org/ 10.11646/phytotaxa.439.1.1
DOI	https://doi.org/10.5281/zenodo.13873615
persistent identifier	https://treatment.plazi.org/id/03CB879E-B70C-D00B-FF72-FBE22E9DCA2D
treatment provided by	Felipe
scientific name	Lasianthus rhinocerotis Blume subsp. xishuangbannaensis Zhu & Wang (2002:282)
status	n.v.

Treatment

51b. Lasianthus rhinocerotis Blume subsp. xishuangbannaensis Zhu & Wang (2002:282) View in CoL . Type: ― CHINA: Yunnan, Jinghong, H. Zhu & H. Wang 98-11-01 (holotype HITBC n.v.).

Thailand: —NORTHERN: Nan: Doi Phu Kha National Park, 13 December 1990, D. D. Tirvengadum et al. s.n. (AAU, BKF, PSU).

Distribution: ― China (Yunnan), Thailand (Northern).

Ecology: —Hill evergreen forest at an elevation of 1200‒1500 m.

Notes: ― Lasianthus rhinocerotis subsp. xishuangbannaensis differs from the typical subspecies in having sparsely villous or glabrescent branches, branchlets, petioles, leaf margin and leaf veins, and it has 7‒8 pairs of lateral veins and the calyx is obconical, 12 mm long hirsute, the calyx lobes are 8 mm long, and the calyx tube is 4 mm long. These observations were made on the same herbarium specimens at AAU that were examined by Zhu (2001) when Lasianthus was revised the first time for Thailand. The typical subspecies occurs in Peninsular Thailand, Malaysia and Indonesia (Sumatra, Java, and Kalimantan). This subspecies only occurs in northern Thailand and China (Yunnan).