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Impatiens macrantha (Balsaminaceae) sp. nov., a new species from limestone areas in Guangxi,China |
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| Authors: | Ying Qin Chang-ying Xia Xu-dong Yang Pramote Triboun Hoang Thanh Son Xue-xue Wu Zi-xin Pei Sheng-xiang Yu |
| Affiliation: | 1. Guangxi Inst. of Botany, Guangxi Zhuang Autonomous Region and the Chinese Academy of Sciences, Guilin, PR China College of Life Sciences, Guangxi Normal Univ., Guilin, PR China;2. School of Life Sciences, Southwest Univ., Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Chongqing, PR China State Key Laboratory of Systematic and Evolutionary Botany, Inst. of Botany, Chinese Academy of Science, Beijing, PR China;3. State Key Laboratory of Systematic and Evolutionary Botany, Inst. of Botany, Chinese Academy of Science, Beijing, PR China Univ. of Chinese Academy of Sciences, Beijing, PR China;4. National Center for Genetic Engineering and Biotechnology, 113 Thailand Science Park, Khlong Nung, Khlong Luang, Pathum Thani, Thailand;5. Dept of Forest Plant Resourse, Silviculture Research Inst. (SRI), Vietnamese Academy of Forest Sciences, Duc Thang, Bac Tu Liem, Ha Noi, Vietnam;6. State Key Laboratory of Systematic and Evolutionary Botany, Inst. of Botany, Chinese Academy of Science, Beijing, PR China |
| Abstract: | Impatiens macrantha S. X. Yu&Ying Qin (Balsaminaceae), a new species from Guangxi, China, is described and illustrated. Phylogenetic analysis based on molecular data shows the new species to belong to I. subg. Clavicarpa and to be closely related to I. tubulosa with which it shares succulent stems and racemose inflorescences, but it can be easily distinguished by having a 4 – or 5 – ridged stem, obovate or elliptic leaf blade, and saccate lower sepal. Furthermore, I. macrantha is distinguishable from other Impatiens in China by its obviously larger leaves and flowers. The evidence from morphology and molecular data both support I. macrantha as new to science. |
| Keywords: | Balsaminaceae Impatiens subg. Clavicarpa limestone areas morphology phylogeny |