Rostrinucula is a genus of flowering plants in the family Lamiaceae, first described as a genus in 1929. It has two known species, both endemic to China.Kew World Checklist of Selected Plant FamiliesFlora of China Vol. 17 Page 255 钩子木属 gou zi mu shu Rostrinucula Kudo, Mem. Fac. Sci. Taihoku Imp. Univ. 2: 304. 1929.
Species Rostrinucula dependens (Rehder) Kudô - Guizhou, Shaanxi, Sichuan, Yunnan Rostrinucula sinensis (Hemsl.) C.Y.Wu - Guangxi, Guizhou, Hubei, Hunan
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