Anthoceros buettneri Steph.
In Species Hepathicarum 5: 997 (1916).
REMARKS
There are only two published collections of this species, both from West Africa: from Bismarckburg (Togo) and from Legon Botanic Garden, Ghana.
An annotation by J. Hasegawa (1993) on the type specimen (G00045041) from Togo as follows: “in this packet I found only solid thalli and broken, short capsules with yellowish spores. Phaeoceros buettneri (Steph.) comb. nov. ” However, the new combination has not been published.