Notes on Carex L. (Cyperaceae) in Guangxi

Abstract

Carex L. as a super large genus with a high species diversity in the world, 100 species of Carex have been recorded from Guangxi at present. However, the resources of Carex in Guangxi are still unclear, and lack of research and investigation. Based on specimens identification, literature research and field investigation, we systematically cleared up the early researches of Carex in Guangxi, and summerized the research brief histories of Carex taxonomy in Guangxi. The genus Carex in Guangxi with high endemism, we focused on 16 taxa of Carex published based on types collected from Guangxi, verified the accuracy of their type locality, supplement distribution information, and made sure that eight species of Carex endemic to Guangxi. Eight newly recorded species of Carex in Guangxi are reported here, which are C. alopecuroides D. Don, C. chungii Z. P. Wang, C. hirtiutriculata L. K. Dai, C. insignis Boott, C. nubigena D. Don, C. sendaica Franch., C. sociata Boott and C. transversa Boott. The morphological feature diagnosis and voucher specimens for these newly recorded species are provided. We also discussed the species diversity, endemism, geographical distribution, and the potential utilization of Carex in Guangxi. The results provide background data for the subsequent research and sustainable utilization of Carex.

Keywords

• cyperaceae
• carex
• species diversity
• endemic plant
• new record
• guangxi