Monday, February 20, 2023

[Botany • 2019] Hoya tengchongensis (Apocynaceae: Asclepiadoideae) • A New Species from Yunnan, China

 

 Hoya tengchongensis J.F.Zhang, N.H.Xia & Y.F.Kuang, 

in Zhang Xia & Kuang, 2019. 


Abstract
Hoya tengchongensis, a new species of Apocynaceae, subfamily Asclepiadoideae from Yunnan, China, is described and illustrated. The new species is morphologically similar to Hoya serpens in its creeping habit, bearing small and suborbicular leaves, and adaxially tomentose corolla. However, H. tengchongensis differs from H. serpens in corolla size (ca 7 mm versus ca 12 mm in diam) and corona morphology (corona lobes slightly ascending versus erect).

Keywords: Hengduan Mountains, Hoya serpens

 Line drawing of  Hoya tengchongensis sp. nov. J.F.Zhang, N.H.Xia & Y.F.Kuang.
(A) branch with inflorescences, (B) corolla (adaxial and abaxial sides), (C) corona (adaxial and abaxial sides), (D) calyx and ovary, (E) ovary, (F) pollinarium.
Drawn by Dinghan Cui from a living plant of the type collection at the greenhouse of South China Botanical Garden, Chinese Academy of Sciences.

 Hoya tengchongensis sp. nov. J.F.Zhang, N.H.Xia & Y.F.Kuang.
(A) stems and cauline leaves, (B) leaves, (C) inflorescence, (D) corolla (adaxial and abaxial sides), (E) corona (adaxial and abaxial sides), (F) pedicels, (G) pollinaria (ventral side), (H) pollinaria (dorsal side)
Photographs: (A)-(E) and (G) by Jing-Feng Zhang; (F) and (H) by Yan-Feng Kuang, based on the type collection before pressing.

Hoya tengchongensis J.F.Zhang, N.H.Xia & Y.F.Kuang


Jing‐Feng Zhang, Nian‐He Xia and Yan‐Feng Kuang. 2019. Hoya tengchongensis sp. nov. (Apocynaceae, Asclepiadoideae) from Yunnan, China. Nordic Journal of Botany.  37(5); DOI:  10.1111/njb.02282