Carexduanensis (Carexsect.Rhomboidales), a new species of Cyperaceae from limestone areas of Guangxi, China

Zhao-Cen Lu; Yi-Fei Lu; Shi-Li Chang; Ming-Lin Mo; Xiao-Feng Jin

doi:10.3897/phytokeys.241.121098

Carexduanensis (Carexsect.Rhomboidales), a new species of Cyperaceae from limestone areas of Guangxi, China

PhytoKeys. 2024 May 2:241:221-228. doi: 10.3897/phytokeys.241.121098. eCollection 2024.

Authors

Zhao-Cen Lu¹, Yi-Fei Lu², Shi-Li Chang^{1

3}, Ming-Lin Mo^{1

3}, Xiao-Feng Jin²

Affiliations

¹ Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, 541006, Guangxi, China Guangxi Institute of Botany Guilin China.
² School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, 311300, Zhejiang, China Zhejiang A&F University Hangzhou China.
³ College of Life Sciences, Guangxi Normal University, Guilin, 541006, Guangxi, China Guangxi Normal University Guilin China.

Abstract

Carexduanensis Z.C.Lu, Y.F.Lu & X.F.Jin, a new species in limestone areas of Guangxi, China, was discovered and described. The morphology showed that C.duanensis is similar to C.calcicola, but differs in having culms central, leaf blades 3-5.5 mm wide, bracts longer than spikes, utricles 4-5 mm long, shorter, and nutlets abruptly contracted into an erect beak at apex. SEM microphotographs of utricles and nutlets are provided for the new and related species, C.calcicola.

Keywords: Carexduanensis; Cyperaceae; morphology and micromorphology; nutlet; taxonomy; utricle.

Zhao-Cen Lu, Yi-Fei Lu, Shi-Li Chang, Ming-Lin Mo, Xiao-Feng Jin.