(D. W. ) Bitter, ?Repert. Spec. Nov. Regni Veg., Beih. 16: 201. 1923.?, 1923.

Bitter, Bitter, (D. W. ), Bitter,, and Bitter, ?Repert. Spec. Nov. Regni Veg., Beih. 16: 46. 1923.?, 1923.