Monographs Details: Steereobryon subulirostrum (Schimp. ex Besch.) G.L.S.Merr.
Authority: Smith, Gary L. 1971. Conspectus of the genera of Polytrichaceae. Mem. New York Bot. Gard. 21: 1-83.
Description:Distribution and Ecology - Distribution: Mexico, Jamaica, Hispaniola, Puerto Rico, Colombia, Yenezuela.
Atrichum subulirostrum Schimp. ex Besch., Mem. Soc. Sci. Nat. Cherb. 16: 205. 1872.
Atrichum portoricense Crum & Steere, Bryologist 59: 254. 1956.
Illustrations: Frye (1948) ; Crum and Steere (1957).
The rudimentary stomata are never more than three or four to a capsule, and
among the paratypes of Atnchum portoricense (MICH!) I found an occasional
capsule which lacked stomata. The specific epithet subulirostrum refers to the
extremely long, slender beak of the operculum.
This remarkable little moss appears to be intermediate between OUgotrichum
and Atrichum. Steereobryon should probably not be regarded as the precursor of
the latter genus, but as an independent expression of trends inherent in Oligotrichum
which culminate in Atrichum. In all likelihood, the same oligotrichoid
stock which produced Steereobryon and Atrichum also gave rise to Psilopilum
Distribution:Mexico North America
| Jamaica South America
| West Indies
| Puerto Rico South America
| Colombia South America
| Venezuela South America