4. Chionanthus macrothyrsus (Merr.) Soejarto & L.K.Phan in Soejarto et al. (2004: 435, Plate LIX).

≡ Linociera macrothyrsa Merrill (1942: 189) . Ho (2003: 883, Fig. 7557), Ly (2003: 1168).

TYPE: — VIETNAM. Lao Cai: Chapa [Sa Pa area], open forests, ca. 1500 m, white-flowered tree about 5 m high, August 1940, P.A. Pételot 2690 (holotype: A: 00063061 photo!; isotypes: HNU!; VNM: VNM00015758!).

Image of holotype available at

https://s3.amazonaws.com/huhwebimages/1373C12C248444F/ type /full/63061.jpg

Etymology: —The specific epithet “ macrothyrsus ” apparently refers to the large paniculate inflorescences characteristic of this species.

Vernacular name: —Vietnamese: Tráng cụm hoa to.