Two new species of Allocheilos (Gesneriaceae) from the karst regions in Yunnan, China

Wen-Hong Chen; Shi-Wei Guo; Jian-Yong Wu; Li Chen; Yu-Min Shui

doi:10.3897/phytokeys.157.32729

Two new species of Allocheilos (Gesneriaceae) from the karst regions in Yunnan, China

PhytoKeys. 2020 Aug 26:157:155-166. doi: 10.3897/phytokeys.157.32729. eCollection 2020.

Authors

Wen-Hong Chen^{1

2}, Shi-Wei Guo^{1

3}, Jian-Yong Wu⁴, Li Chen^{1

5}, Yu-Min Shui^{1

2}

Affiliations

¹ CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, Kunming 650201, Yunnan, China.
² Karst Conservation Initiative of Yunnan, Kunming 650201, Yunnan, China.
³ University of the Chinese Academy of Sciences, Beijing 100049, China.
⁴ Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China.
⁵ School of Life Sciences, Yunnan University, Kunming 650091, Yunnan, China.

Abstract

Allocheilos W.T.Wang in Gesneriaceae was described in 1983 and is characterized by its 4-lobed adaxial lip and undivided abaxial lip with acute apex. The genus is endemic to the karst regions in southwestern China and is classified as endangered due to habitat loss. During surveys of the karst areas in Yunnan of southwestern China in 2017, we collected two unknown species of the genus and later confirmed their novelty to science based on the detailed observation of their morphological characteristics, viz. A. maguanensis W.H.Chen & Y.M.Shui and A. rubroglandulosus W.H.Chen & Y.M.Shui. Their relationships with the similar species and provisional conservation status are discussed.

Keywords: Allocheilos; corolla; habitat; isolated distribution; staminodes.

Wen-Hong Chen, Shi-Wei Guo, Jian-Yong Wu, Li Chen, Yu-Min Shui.