Acta Phytotaxonomica Sinica    2007 45 (3): 296-300   ISSN: 0529-1526  CN: 11-1897/Q   

 
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Roscoea cangshanensis M. H. Luo, X. F. Gao & H. H. Lin, a new species of the Zingiberaceae from Yunnan, China
1 2LUO Ming-Hua, 3GAO Xin-Fen, 2ZHU Zheng-Yin, 1LIN Hong-Hui*
1(Key Laboratory of Bio-resources and Eco-environment, Ministry of Education,
College of Life Sciences, Sichuan University, Chengdu 610064, China)
2(Sichuan School of Chinese Materia Medica, Emei, Sichuan 614201, China)
3(Chengdu Institute of Biology, the Chinese Academy of Sciences, Chengdu 610041, China)
Received 2005-12-14 Revised 2007-3-17 Online 2007-5-10 Accepted
Abstract  Roscoea cangshanensis M. H. Luo, X. F. Gao & H. H. Lin, a new species of the Zingiberaceae from Yunnan, China, is described and illustrated. The new species is related to R. forrestii Cowley in habit, but differs in having 2-lobed labellum, each lobe 2-lobulate, base narrowed to a stalk with white lines, and narrower leaf blade, (2–)7–24×1.5–2.5 cm, with base narrow to petiole-like. The new species is also similar to R. debilis Gagnep. in having leaf base narrow to petiole-like, labellum obovate-cuneate, 2.5–3.5×2.5–3.0 cm, with white lines at throat, but differs in having bracts non-tubular, shorter, 5–

Key words
   Roscoea   Roscoea cangshanensis M. H. Luo   X. F. Gao & H. H. Lin   Zingiberaceae   new species   Yunnan   China  

DOI: 10.1360/aps050184
Corresponding author  
LIN Hong-Hui honghuilin@vip.sina.coml