Goodyeramedogensis (Orchidaceae), a new species from Tibet, China

Yi-Hua Tong; Mei Sun; Bing-Mou Wang; Huai-Zhen Tian

doi:10.3897/phytokeys.189.77374

Goodyeramedogensis (Orchidaceae), a new species from Tibet, China

PhytoKeys. 2022 Feb 14:189:141-154. doi: 10.3897/phytokeys.189.77374. eCollection 2022.

Authors

Yi-Hua Tong^{1

2}, Mei Sun³, Bing-Mou Wang⁴, Huai-Zhen Tian³

Affiliations

¹ Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangdong, 510650, Guangzhou, China South China Botanical Garden, Chinese Academy of Sciences Guangzhou China.
² Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, 510650, China Core Botanical Gardens, Chinese Academy of Sciences Guangzhou China.
³ School of Life Sciences, East China Normal University, Shanghai, 200241, China East China Normal University Shanghai China.
⁴ Panyu Central Hospital, Guangzhou, 511402, China Panyu Central Hospital Guangzhou China.

Abstract

A new species of Goodyera (Orchidaceae) from Tibet, China, G.medogensis, is described and illustrated here. Molecular phylogenetic results based on one nuclear (ITS) and two plastid markers (matK and trnL-F) support the recognition of G.medogensis as a new species in GoodyerasubsectionReticulum. Morphologically, the novelty is most similar to G.biflora, G.vittata and especially to G.hemsleyana, but differs by the thick grid lines of the reticulations with a diffused margin on the adaxial surface of the leaf blades, the inflorescence with more flowers, the obliquely obovate-rhombic petals, the yellow or yellowish labellum without a lamella on the blade, and the shorter trichomes on the floral bracts, sepals and ovary. Finally, a key to the species of Goodyerasubsect.Reticulum in China is also provided.

Keywords: Cranichideae; Jewel orchid; Orchidoideae; morphology; new species; phylogeny.

Yi-Hua Tong, Mei Sun, Bing-Mou Wang, Huai-Zhen Tian.