34 CRTPTOGAMIA. 



Hermaphrodite. Densely casspitose. Stems and innovations very 

 short, 4-5 lines high, gemmiform. Leaves crowded into a subglobose 

 tuft, oblong or obovate-oblong, pointed, serrate above; margins re- 

 flexed, bordered; costa extending to the point; areolation rather 

 loose, cellules rhombic: perichaetial leaves elongated-oblong, long- 

 pointed, with a subexcurrent costa. Capsule subpendulous, clavate- 

 oblong, straight or slightly curved, constricted below the mouth when 

 dry : teeth of the peristome closely articulated ; cilia broad with large 

 perforations on the keel ; ciliolse in pairs, conspicuously appendiculate ; 

 annulus large, compound; operculum rather small, hemispherical, 

 apiculate ; pedicel slender, 1-2 inches high. 



This species is closely related to Bryum rnicrostegium, Schimp., but 

 that has ovate-lanceolate leaves gradually acuminated and long-cuspi- 

 date by the excurrent costa, with margins not reflexed; a convex- 

 conic more pointed and much smaller operculum; and more linear 

 peristomial teeth with more distant articulations. 



Plate 7, B. — Bryum Oreganum : three plants, of the natural size. 

 Fig. 1. A plant. 2, 3, 4, 5, 6. Leaves. 7. Cross section of leaf. 

 8. Leaf, showing the reticulation. 9. Marginal portion of leaf, show- 

 ing the same. 10, 11, 12, 13, 14. Capsules. 15. Portion of peri- 

 stome. 16. Vertical section of peristome. 17. Portion of annulus. 

 18. Vaginula, with antheridia and archegonia. 19. Archegonia, anthe- 

 ridium, and paraphysis. — Details magnified. 



12. Bryum l^evigatum, Hook. fit. & Wils. 



Bryum Iwvigatum, Hook. fil. & Wils. Flo. Antarct. p. 415, t. 154, p. 3. 



Hab. Orange Harbor, Fuegia. 



13. Bryum nutans, Schreb. 



Bryum nutans, Schreb. Spic. Flo. Lips. p. 81 ; Bryol. Europ. 4, Bry. Monog. p. 34, 

 t. 12. 



Hab. Cape Horn. 



