220 HANDBOOK OF BRITISH MOSSES. 



70. ORTHOTRICHUM, Hedw. 



Veil with a few keel-like folds ; sporangium striate ; peri- 

 stome single, double, or wanting ; leaves straight when dry, 

 papillose and punctate above, loosely reticulated at the base 

 and even. 



* Peristome simple. 



1. O. cupulatum, Hoffm. ; pulvinate ; stem branched; 

 leaves crowded, spreading, oblongo-lanceolate ; sporangium 

 obovate, with sixteen furrows ; veil campanulate, more or less 

 hairy. Hook. % Wils. t. xxi. ; Eng. Bot. t. 1423, 1325.; 

 (Plate 20, fig. 4) ; Mouy. % Nest. n. 7; 3. 



On stones, trees, etc., especially in calcareous districts. 

 Bearing fruit in spring. 



Forming loose, pulvinate tufts of a dull-green. Veil 

 sparingly hairy, in one variety nearly or quite naked ; spo- 

 rangium yellowish, with a short fruitstalk, with sixteen striae, 

 alternately longer and shorter, ribbed when dry ; teeth sixteen 

 with a strong medial line, sometimes showing at the base in- 

 dications of another division, surrounded by a short lamellar 

 appendage ; cilia none ; lid convex, with a short point. 



2. O. anomalum, Hedw. ; stem nearly simple, erect; leaves 

 crowded above, erecto-patent, ovato-lanceolate, keeled ; spo- 

 rangium exserted, oblong, with sixteen striae ; peristome 

 simple ; veil hairy. Hook, fy Wils. t. xxi. ; Eng. Bot. t, 

 2696. ; (Plate 20, fig. 5) ; Moug. fy Nest. n. 29. 



On rocks and walls, especially in calcareous districts. Bear- 

 ing fruit in spring. 



Monoicous; forming little tufts. Margin of leaves revo- 

 lute or subrevolute ; sporangium on a short but exserted 

 stalk, reddish-brown, with light -coloured ribs, of which eight 

 are long and eight short ; teeth of peristome at first looking 

 like eight only, with traces of an internal peristome ; lid with 

 a short beak. 



