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Edgeworthia tomentosa (Thunb.) Nakai. (Thymelaeaceae): A newly recorded species for the flora of Vietnam

In this paper, E. tomentosa (Thunb.) Nakai., a new record of Thymelaeaceae, is described and color photographs from the material collected in Sang Ma Sao Village, Muong Hum Commune, Bat Xat District, Lao Cai Province, Vietnam. | Nguyễn Thị Vân và Đtg Tạp chí KHOA HỌC & CÔNG NGHỆ 180(04): 49 - 52 Edgeworthia tomentosa (Thunb.) Nakai. (Thymelaeaceae): A NEWLY RECORDED SPECIES FOR THE FLORA OF VIETNAM Nguyen Thi Van1, Tran Duc Binh2, Sy Danh Thuong3, Bui Hong Quang2* 1 Bacgiang Agriculture and Forestry University, Institite of Ecology and Biological Resources - Vietnam Academy of Science and Technology, 3 TNU - University of Education 2 SUMMARY Thymelaeaceae has 48 genera and ca. 650 species, widely distributed in both hemispheres. Edgeworthia is a small genus of Thymelaeaceae, about 5 species, only distribution in Asia (Bhutan, China, India, Japan, Myanmar, Nepal, Vietnam). Among 5 species, there are 3 endemic species in China. In Vietnam, this genus has only 1 species - E. gardneri (Wall.) Meisn., only distribution in Khanh Hoa. In this paper, E. tomentosa (Thunb.) Nakai., a new record of Thymelaeaceae, is described and color photographs from the material collected in Sang Ma Sao Village, Muong Hum Commune, Bat Xat District, Lao Cai Province, Vietnam. So far, this species only distributes in China (forests, shrubby slopes and also cultivated in Fujian, Guangdong, Guangxi, Guizhou, Henan, Hunan, Jiangxi, Yunnan, Zhejiang) and Japan (cultivated and naturalized). This paper also mentions the conservation status of the species and discussion on different morphological characters between E. tomentosa and E. gardneri. Key words: Edgeworthia, Edgeworthia tomentosa, Lao Cai, new record, Vietnam INTRODUCTION* So far, the genus Edgeworthia Meisner and the species E. tomentosa (Thunb.) Nakai. belong to Thymelaeaceae, was known including about 4 species and distributed in Asia (China, Japan) [3], [4], [7]. So far, there is only one species (E. tomentosa (Thunb.) Nakai.) in Vietnam [1], [5]. In 2017, during investigation in Bat Xat District, Lao Cai Province, Vietnam, we found a Edgeworthia plant small tree, an interesting species of Thymelaeaceae was encountered. Hence, we report this species as