Ditrichum rufescens

Ditrichum rufescens (Hampe) Broth
Pfl. 1': 300. 1901.
Mnium striclum Sw. Prodr. 139. 1788 Not Ditrichum sirictum Hampe, 1867.
TrichoiUjmum striclum Sw. Fl. Ind. Occ. 1761. 1806.
Trichoilomum pallidum itrictum Schwaegr. Suppl. 2': 177. 1824.
Leptotrichum rufescem Hampe, Linnaea 31: 521. 1862.
Cynonlodium striclum Mitt. Jour, Linn. Soc. 12: 42. 1869.
Cynontodium rufefcens Milt. Jour. Linn. Soc. 12: 44. 1869.
Leptotrichum mexicanum Schimp.; Bcsch. Mtm. Soc. Sci. Nat. Cherbourg 16: 174. 1872.
Leptotrichum capiUifolium Schimp.; Jaeger, Her. St. Gall. Nat. Ges. 1871-72: 388; hyponym. 1873.
Leptotrichum pseudorufeuens C. MOII. Bull. Herb, Boiss. 5: 554. 1897. Plants densely gregarious, forming soft, matted, yellowish-green tufts; stems 1-3 cm. high, tomentose at the base, densely leafy above: leaves not secund, twisted when dry, 3-5 mm. long, lanceolate-subulate, from a short clasping base; margins incurved, subserrulate or entire; costa very broad, channeled and grooved, filling three fourths of the base and nearly all of the smooth tubular awn, ending below the denticulate apex; basal cells linear, porose, up to 50 n long ; perichaetial leaves with a longer, broader, clasping base. Paroicous : antheridia just below the perichaetium in buds : seta pale-yellow or rufous and slender, 1-3 cm. high : calyptra 3 mm. long, cucuUate: capsule erect or slightly inclined, smooth or slightly furrowed when dry, symmetric, ovoid-cylindric, 1.5-3 mm. long; neck short, abrupt, stomatose; lid 0.5-0.75 mm., conic-rostrate, bordered; annulus simple, narrow; mouth small, bordered by 2-3 rows of red cells; peristome slightly twisted; basal membrane short; teeth irregularly bifid, jointed, nodose, papillose : spores smooth or nearly so, 1 0-1 6 ^ in diameter, maturing from April to June.
Type locality: Cipacon, Andes of Bogota, Colombia, alt. 2500 meters. Distribution: On shady banks in mountains from Mexico to Colombia; Jamaica, 1500-2100 meters.