A new species of Hiptage (Malpighiaceae) from Nujiang Gorge,southwest China |
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Authors: | Shu-Peng Dong Ke Tan Ming-Xun Ren |
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Institution: | 1. Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants (Hainan Univ.), Ministry of Education;2. College of Ecology and Environment, Hainan Univ., CN-570228 Haikou, PR China
Center for Biodiversity and Eco-Environment of the South China Sea, Hainan Univ., Haikou, PR China;3. College of Ecology and Environment, Hainan Univ., CN-570228 Haikou, PR China |
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Abstract: | Hiptage lushuiensis, a new species from the Hengduan Mountains, northwestern Yunnan Province, China, is described and illustrated here. This species was found growing at the margin of an open forest in the Nujiang Gorge of Lushui City. Hiptage lushuiensis is distinctive for its pink petals, 2 or more calyx glands, and large and pink samara with white hairs. This species is isolated in the deep gorge (25°51′N, 98°51′E, altitude 917 m), at the northern edge distribution range of the genus. These distinctive morphological differences and the geographic isolation suggest a history of long-distance dispersal and allopatric speciation. Hiptage lushuiensis has a shorter filament but larger herkogamy than related species, suggesting that H. lushuiensis may have adapted to other pollinators with short but fat body such as Amegilla or Bombus spp. |
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Keywords: | Asian flora Malpighiales taxonomy tetrapteroid clade |
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