茜definition at studio707.co, a free online dictionary with English, Mandarin Chinese, Pinyin, Strokes. Look it up now!. 15 Jul Abstract. Rubia L. is the type genus of the coffee family Rubiaceae and the third largest genus in the tribe Rubieae, comprising ca. 80 species restricted to the Old World. China is an important diversity center for Rubia, where approximately half of its species occur. However, its internal phylogenetic. 15 Jul Molecular phylogeny of Chinese Rubia. (Rubiaceae: Rubieae) inferred from nuclear and plastid DNA sequences. Li-E Yang1,2, Hang Sun1, Friedrich Ehrendorfer3, and Ze-Long Nie4*. 1Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of.