Geum sunhangii (Rosaceae), a new species from Hubei Province, China
Zhenyu LvSchool of Life Sciences, Yunnan Normal University, Kunming 650500, ChinaDai-Gui ZhangKey Laboratory of Plant Resources Conservation and Utilization, Jishou University, Jishou, Hunan 416000, ChinaXianhan HuangUniversity of Chinese Academy of Sciences, Beijing 100049, ChinaHengchang WangKey Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, ChinaJingyuan YangKomiljon TojibaevCentral Herbarium of Uzbekistan, Institute of Botany, Academy Sciences of Uzbekistan, Tashkent 100025, UzbekistanTao DengChinese Academy of SciencesZhimin LiSchool of Life Sciences, Yunnan Normal University, Kunming 650500, China
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Geum sunhangii – first discovered in Shennongjia National Nature Reserve, Hubei Province, China – is described as a new species of Rosaceae. Compared to all known Chinese Geum species, the new species differs by possessing jointed styles, imbricate petals and a reniform radical leaf terminal leaflet. Most significantly, the jointed style is curved at an obtuse or a right angle. In addition, the inclusion of this species within the genus Geum was supported by phylogenetic analysis using the sequence data of a nuclear ribosomal internal transcribed spacer (nrITS) and a chloroplast trnL–trnF intergenic spacer. The new species was found to be closely related to G. rivale and G. aleppicum .
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