What is "lapsanastrum"

Lapsanastrum is a genus of flowering plants in the dandelion family, native to East Asia ( China, Korea, Japan).

1. Lapsanastrum apogonoides (Maxim.) Pak & K.Bremer - Anhui, Fujian, Guangdong, Guangxi, Hunan, Jiangsu, Jiangxi, Shaanxi, Taiwan, Yunnan, Zhejiang, Japan, Korea; naturalized in Oregon
2. Lapsanastrum humile (Thunb.) Pak & K.Bremer - Anhui, Fujian, Jiangsu, Zhejiang, Japan, Korea
3. Lapsanastrum takasei (Sasaki) Pak & K.Bremer - Taiwan
4. Lapsanastrum uncinatum (Stebbins) Pak & K.Bremer - Anhui