A revision of Cinnadenia Kosterm. (Lauraceae)

Cinnadenia Kosterm. (Lauraceae) consists of three species, namely, C. paniculata (Hook.f.) Kosterm. which occurs in India and Bhutan, C. liyuyingii (H.Liu) de Kok & Sengun, comb. nov. from Northern Vietnam and South China and C. malayana Kosterm. which is endemic to Peninsular Malaysia. All species are rarely collected and consequently Cinnadenia is a poorly known genus. The genus is revised here with a summary of its taxonomic history, key, full descriptions, distribution map, conservation assessments, ecological data, and a delineation of its key morphology. Cinnadenia liyuyingii, comb. nov. which was previously placed in Litsea or as a synonym of C. paniculata, is moved here to Cinnadenia for the first time.