OllTHOTUICHIEI. 221 



Hedwig figures short intermediate strise, which also appear 

 in the ' English Botany ' figure, and in Mougeot and Nestler's 

 specimens. Wilson, however, gives the number as eight in 

 his specific character. In some of his own specimens from 

 the Orme's Head, the intermediate strise are absent, but in 

 others they are distinctly marked. 



3. O. Sturmii, Hoppe fy Hornsch. ; monoicous ; loosely 

 tufted ; stems erect or prostrate ; leaves spreading and re- 

 curved when moist, incumbent when dry, keeled ; margin re- 

 volute; sporangium immersed, obscurely eight-striate ; veil 

 more or less hairy. — (Moug. fy Nest. n. 922.) 



On stones and rocks. W. Wilson. Bearing fruit in sum- 

 mer. 



Tufts dark-green. Larger than the last, with a more 

 spreading habit ; veil yellowish ; peristome erect when dry. 



** Peristome double, 

 a. Cilia eight. 



4. O. obtusifolium, Schrad. ; dioicous, irregularly pulvi- 

 nate; leaves spreading when moist, imbricated when dry, 

 ovato-oblong, papillose beneath ; tip obtuse, hyaline, minutely 

 toothed; margin slightly incurved; veil naked below; spo- 

 rangium immersed, eight-striate. — (Moug. fyNest. n. 616.) 



On trees .W. Wilson. Bearing fruit, but rarely, in spring. 



Tufts yellowish. Known by its obtuse leaves, whose mar- 

 gin is not recurved ; veil orange, hairy at the tip only ; mouth 

 and ribs of the sporangium orange. 



5. O. fallax, Schimp. ; monoicous; stem short, dichoto- 

 mous; leaves spreading, lanceolate or elliptico-lanceolate ; 

 sporangium immersed, swollen with an abrupt apophysis, 

 8-striate; veil campanulate, naked or with scattered hairs. 

 —Hook. §• Wils. t. xlv. ; Eng. Bot. t. 2168. ; (Moug. $ Nest, 

 n. 322.) 



