Aristolochia chlamydophylla . Wu ex . Hwang, a medicinal plant and main distribution from northern Thailand and south-eastern China, is newly recorded for the flora of Vietnam. This species was misidentified to A. kaempferi in Vietnamese herbaria. An extent description, illustrations and taxonomic notes of Aristolochia chlamydophylla are also provided. | VNU Journal of Science: Natural Sciences and Technology, Vol. 34, No. 2 (2018) 69-73 Aristolochia chlamydophylla (Aristolochiaceae), a New Record for the Flora of Vietnam Pham Thi Oanh1,3, Lai Viet Hung2,3, Nguyen Trung Thanh3, Do Van Truong4,* 1 Faculty of Science, Haiphong University, Hai Phong, Vietnam National Institute of Medicinal Materials, 3B Quang Trung, Hoan Kiem, Hanoi, Vietnam 3 Faculty of Biology, VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam 4 Department of Biology, Vietnam National Museum of Nature, Vietnam Academy of Science & Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam 2 Received 14 May 2018 Accepted 23 May 2018 Abstract: Aristolochia chlamydophylla . Wu ex . Hwang, a medicinal plant and main distribution from northern Thailand and south-eastern China, is newly recorded for the flora of Vietnam. This species was misidentified to A. kaempferi in Vietnamese herbaria. An extent description, illustrations and taxonomic notes of Aristolochia chlamydophylla are also provided. Keywords: Aristolochiaceae, Aristolochia chlamydophylla, new record, Vietnam. 1. Introduction medicine (Hwang et al., 2003) [3]. Recent phylogenetic studies based on morphology and molecular data suggest a subdivision of Aristolochia into three monophyletic groups recognized as the subgenera: Aristolochia, Pararistolochia, and Siphisia (Wanke et al., 2006) [4]. In the flora of Vietnam, only two subgenera (Aristolochia and Siphisia) are recorded. Of which, the subgenus Siphisia is well known for its U- or horseshoe-shaped perianth, the utricle and the tube are not sharply delimited, a strongly curved tube, a 3-lobed limb, and a 3-lobed gynostemium, each carrying two anthers. In contrast, the subgenus Aristolochia can be recognized by its slightly curved or rectilinear tube, the utricle and the tube are sharply distinct, a 1-lobed limb, and a Aristolochia Linnaeus (Aristolochiaceae) is widely distributed throughout the tropics, subtropics, and
