196. Willowsia pseudosocia Stach, 1965

Willowsia pseudosocia Stach, 1965: 363 .

Distribution in Vietnam. In forest, grassland, cultivated land, urban soil.

Northwest: Lào Cai ( Hoàng Liên national park; Sa Pa).

Northeast: Phú Thọ (Xuân Sõn national park).

Red River Delta: Hà N ội (Đống Ða, Hoàn Kiếm, Hai Bà Trýng, Thanh Xuân, C ầu Gi ấy, Tây H ồ, Sóc Sõn, T ừ Liêm, Gia Lâm, Thanh Trì, Đông Anh.

Mekong River Delta: Hậu Giang (Lung Ngọc Hoàng natural reserve).

Authorship. DO: Stach 1965.

RD: Nguyễn T.T. 1994, 2017.

TN: Zhang et al. 2011a.

EC: Nguyễn T.T. et al. 1999; Nguyễn T.T. & Nguyễn V.Q. 2011; Nguyễn V.Q. & Nguyễn T.T. 2014; Trần T.K.H. et al. 2017.

CI: Nguyễn T.T. 1995c, 2003a; Nguyễn T.T. et al. 2011.

CAT: Nguyễn T.T. & Vũ Q.M. 1993.

Type locality. Sa Pa, Lào Cai province (Vietnam).

General distribution. Known only in Vietnam.

Remarks. In the original description no type was chosen. Therefore, the listed specimens are regarded as syntypes. Syntypes in coll. Stach at ISEA .