Bot. Mag. (Tokyo) 25: 30, fig. 1. 1911,.
Seta 3–5 mm, straight to some-what arcuate. Capsule when mature narrowly ovoid to nearly cylindric, 3–5 mm, dull brown to rusty-brown, upper face not strongly differentiated from lower face, slightly oblique to seta or nearly erect. Spores 12–13 µm.
Phenology: Capsules mature late summer–fall.
Habitat: Soft decaying decorticated logs in deciduous to mixed forest
Elevation: low elevations (20-150 m)
Nfld. and Labr. (Nfld.), N.S., Ont., Mass., Mich., N.Y., N.C., Vt., Va., e Asia (Russian Far East).
Buxbaumia piperi has occasionally been confused with this species, but the sporangium shape (narrowly ovate to cylindric) and the shorter, often arcuate seta separate B. minakatae; B. piperi has a longer, straight seta and ovate sporangium. A report of B. indusiata (A. J. Grout 1928–1940, vol. 1) was based on misidentifications of eastern North American material.