Phascum schimperianum Sullivant in A. Gray, Manual ed. 2, 615. 1856

Plants elliptic to globose, occasionally three-angled, 1-1.5 mm. Stem leaves awned, broadly channeled; laminal cells papillose abaxially. Seta as long as the diameter of the capsule. Spores spheric, 35-40 µm, papillose.

Capsules mature winter. Soil, dry washes; low to moderate elevations; Ariz., Ill., Iowa, Kans., Tex.; Mexico (Nuevo León).

Acaulon schimperianum is awned and the distal margins are more strongly dentate than those of the other species.

SELECTED REFERENCE

Crum, H. A. and L. E. Anderson. 1965. The taxonomy and distribution of Acaulon schimperianum. Bryologist 68: 208-211.