tailieunhanh - Genus Didymocarpus wall. and a new record of species Didymocarpus purpureobracteatus Smith for the flora of Vietnam from Xuan Lien natural reserve

In this paper, we provide the key to these species of the genus Didymocarpus, some new information of these species and characteristic morphology for finding D. purpureobracteatus in Vietnam. | TAP CHI SINH HOC 2014, 36(1): 46-50 Genus Didymocarpus from Lien natural reserve DOI: Xuan GENUS Didymocarpus Wall. AND A NEW RECORD OF SPECIES Didymocarpus purpureobracteatus Smith FOR THE FLORA OF VIETNAM FROM XUAN LIEN NATURAL RESERVE Vu Xuan Phuong1, Dang Quoc Vu2, Do Thi Xuyen3* 1 2 Institute of Ecology and Biological Resources, VAST Forest Protection Department, Ministry of Agriculture and Rural Development 3 VNU University of Science, *xuyendoiebr@ ABSTRACT: Species Didymocarpus purpureobracteatus Smith is a new record for the flora of Vietnam. It was regarded as one endemic species to China, but up to now we have found it in Xuan Lien natural reserve (Thanh Hoa province). Voucher specimens were deposited in the Herbarium of the Institute of Ecology and Biological Resources, Hanoi, Vietnam (HN). This species is closed to D. poilanei but differs by bract elliptic or ovate, ca. 3-8 mm long; sepal tube ca. 8-9 mm long, sepal lobed ca. 2-3 mm long. So far, in Vietnam there were 5 species of the genus Didymocarpus Wall. recorded D. bonii, D. pulcher, D. kerrii, D. poilanei and D. purpureobracteatus. Keywords: Gesneriaceae, Didymocarpus, new record, Xuan Lien natural reserve, Vietnam. INTRODUCTION MATERIALS AND METHODS According to Wang et al. 1998 [10], the genus Didymocarpus Wall. (Gesneriaceae) comprises about 180 species, mainly distributed South-East Asia, there were 4 Didymocarpus species recorded in Vietnam [8]. During the study of specimens and documents of Gesneriaceae of Vietnam, we found Didymocarpus: Didymocarpus purpureobracteatus Smith collected in Xuan Lien reserver, Thanh Hoa province, Vietnam. Therefore, this is a new record for the flora of Vietnam and to date the genus Didymocarpus has 5 species. In this paper, we provide the key to these species of the genus Didymocarpus, some new information of these species and characteristic morphology for finding D. purpureobracteatus in Vietnam. All specimens .