Stixis yingjiangensis, a new species of Resedaceae from Yunnan, China

Stixis yingjiangensis (Resedaceae), a new species from Yingjiang, Yunnan, China, is described and illustrated. It is compared with two morphologically similar species S. philippinensis, and S. villiflora. It differs from the two species by both surfaces with sparsely strigillose on lateral nerves, midrib and pustules (each pustule is formed by a multicellular cushion from which one short hair can also be produced), inflorescences axillary, racemes, 3-9 cm, filaments lower third pubescent, upper two thirds glabrous, androgynophores 2-3 mm, glabrous except apex sparsely puberulent, gynophores with densely white hairs, ovary glabrous. A complete morphological description of Stixis yingjiangensis is provided, together with photographs, a conservation assessment, and a diagnostic key to 4 species and 1 subspecies of Stixis from China.