PLATE XXV. O. speciosum (From Bry. 

 2, 3 and 5. Leaves. 7, 8. 10 and 15. Capsules and peristome. 



PLATE XXVI. O. sordidum (From Sulliv. " Tcones Muse. Suppl.") 

 i. Plants natural size. 3. Leaves. 4. Leaf sections. 5. Cellular struc- 

 ture of leaf base and apex. 12. Antheridial branch with antheridium and 

 paraphysis. n. Segment of peristome highly magnified. 13. Superficial 

 stoma. The other figures are self-explanatory. 



