Orthotrichum elegans Schwaegrichen ex Richardson 1823

Orthotrichum elegans Schwaegr.; Hook. & Grev
Edinb. Jour. Sci. 1: 122. 1824.
Orthotrichum speciosum var. Roellii Venturi: Roll, Bot. Centr. 44: 419. 1890, Orthotrichum psilothecium C. Mull. & Kindb. in Macoun, Cat. Can. PI. 6: 91. 1892.
The eastern counterpart of the western 0. speciosum; plants smaller than the latter, rarely much over 1 cm. in height, darker green; leaves less slenderly pointed, with very much smaller and usually simple papillae; capsules nearly or quite exserted, oblong-ovoid, smooth, nearly cylindric when dry, the urn about 2 mm. long; exothecial cells nearly uniform; peristome-teeth with up to 14 segments ; spores maturing in summer.
Type locality: On trees. North America between lat. 54° and 64° (Dr. Richardson). Distribution: Common on trees; northern United States and southeastern Canada, mostly east of the Mississippi River; Minnesota.