A new species of Rhododendron (Ericaceae) from Guizhou, China Author Dai, Xiao-Yong Guizhou Academy of Forestry, Guiyang 550009, Guizhou, China Author Yang, Cheng-Hua Guizhou Academy of Forestry, Guiyang 550009, Guizhou, China Author Yang, Bing Guizhou Academy of Forestry, Guiyang 550009, Guizhou, China Author Chen, Pu Puding Forestry and Grassland Administration, Puding 562100, Guizhou, China Author Ma, Yong-Peng Yunnan Key Laboratory for Integrative Conservation of Plant Species with Extremely Small Populations, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China mayongpeng@mail.kib.ac.cn text PhytoKeys 2020 146 53 59 http://dx.doi.org/10.3897/phytokeys.146.51342 journal article http://dx.doi.org/10.3897/phytokeys.146.51342 1314-2003-146-53 B90C51E547845466AE9A185E82AAD235

Table 1. Diagnostic characters for Rhododendron pudingense and closely related species.

Characters	R. myrsinifolium	R. pudingense	R. minutiflorum
Leaf shape	elliptic, rarely obovate	obovate to obovate-elliptic	oblong to obovate or broadly ovate
Leaf length	6-8 x 3-5 mm	8-20 x 5-10 mm	8-15 x 3-5 mm
Leaf margin	red-brown punctate glands	no glands	no glands
Corolla tube length	4 mm long	8-11 mm long	3 mm long
Corolla tube surface	glabrous in both sides	outer surface glabrous whereas inner surface puberulent	outer surface reddish glandular-hairy and inner surface puberulent
Stamen length	12-14 mm	15-28 mm	7 mm long
Filament	glabrous	slightly puberulent below the middle of filament	puberulent at the lower part
Style length	12-15mm	20-28 mm	8 mm long
Style covers	coarsely appressed setose at the lower part	glabrous	Sparsely shortly glandular-hairy below