58 ICONES MUSCORUM. 



tinguished chiefly by its capsule, when deoperculatc and empty, 

 being elongate-campanulate, narrowly ribbed, and of a pale 

 straw color, by its whitish calyptra, and the pale rusty-reddish 

 teeth of its peristome. 



Another species, yet unpublished, closely resembling the smaller 

 forms of O. Canadense, has been found in Pennsylvania by Mr. 

 T. P. James, and named by him O. psilocarpum : it is remark- 

 able for its capsule-wall, when dry and empty, being ecostate, 

 and for the erect pale greenish-yellow teeth and long irregular 

 granular cilia of its peristome. 



TAB. 36. — Orthotricuum stkangulatum. 



1. Plants naturali magnitudine. 



2. Planta fertilis. 



3. Caulis defoliata inflorescentiam monstrans. 



4. Folia. 



5. Areolatio folii bascos. 



6. Eadem folii apicis. 



7. Sectiones transversales folii. 



8. Capsula calyptrata. 



9. Eadem madifacta. 



10. Eadem sicca sed hand vacua. 



11, ri. Particulse peristomii, ciliis false depictis. 



13. Operculum. 



14. ( iemma mascula. 



15. Folii perigoniale, antheridia, et paraphysis. 



