Orthotrichum Moss

Orthotrichum striatum Hedw. Sp. Muse. 163. 1801
Orthotrichum leiocarpum Bruch & Schimp. in B.S.G. Bryol. Eur. (2-3:) Orthotr. 28. 1837.
Plants in irregular and often rather loose tufts, deep green to yellowish-green above ; stems erect to ascending, 1-5 cm. long, branching; leaves loosely imbricate when dry, long-lanceolate and slender-pointed, 3-4 mm. long, the margins recurved or revolute nearly to the often serrulate apex; costa extending nearly to the apex; leaf-cells unistratose, the median basal oblong to sublinear, more or less incrassate, the marginal sub quadrate and the main body of cells irregularly rounded, elliptic to circular above, incrassate, bearing simple papillae; autoicous; seta very short; capsules immersed, smooth, brownish to straw-colored, oblong to ovoid, slightly contracted below the mouth when dry and empty but without traces of striae ; calyptra strawcolored, hairy; stomata superficial; annulus present; operculum conic, red at the margin; peristometeeth 16, of many articulations, recurved when dry, densely and evenly papillose, the segments 16, nearly as long as the teeth, of two very irregular rows of cells, papiUose, erect; spores about 25 fi in diameter, lightly papillose, maturing in early spring.
Type locaijty: Europe.
Distribution: On the bark of trees; very rare in North America; Vancouver Island; Washington ; Idaho ; near Lake Superior and probably elsewhere ; Mexico (Barnes 6* Land 400) ; South America : Europe; Asia; Africa.
7 lL ^ STRATl ° NS : BSG Br yol. Eur. pi. 220; Husnot, Muse. Gall. pi. 45; Braithw. Brit. Moss-El.
2l pi* 50G«

Orthotrichum striatum is a species of moss belonging to the family Orthotrichaceae.

It has cosmopolitan distribution.