CRYPTOGAMIA. 



A large rigid species forming extended loose mats, of a dingy yellow 

 color. Stems 3-5 inches long, prostrate, with a few ascending, elon- 

 gated, slightly compressed branches. Leaves ovate-lanceolate, concave, 

 patent-divergent, somewhat incurved, rugulose-striate, at base saccate- 

 plicate; margins narrowly reflexed, serrulate; costa strong, reaching 

 nearly to the point; texture firm, thin, composed of minute oblong 

 cellules. Perichaetial leaves numerous; the exterior subsquarrose; 

 the interior sub-erect, with long, flexuous, filiform, serrate points. 

 Capsule cylindraceous-oblong, erect, sub symmetrical, gradually taper- 

 ing into the pedicel; mouth slightly oblique. Annulus simple. 

 Operculum about as long as the capsule, the rostrum erect, from a 

 conic base. Pedicel slender, flexuous. two or more inches long, aris- 

 ing from near the base of the branchlets. Teeth of the peristome 

 closely articulated, linear-subulate; cilia about the length of the teeth, 

 slender, carinate from a broad membranous base; ciliolse rudimentary. 

 Columella emergent. Sporules large. Archegonia 40-50. Dioicous: 

 male plant smaller than the female. Antheridia 35-40. Paraphyses 

 abundant in both flowers. 



Plate 17, B. — Hypnum Wilkesianum: male and female plants, of 

 the natural size. Fig. 1. Portion of stem, with leaves. 2, 3, 4, 5. 

 Leaves. 6. Cross-sections of same. 7,8,9. Portions of leaves, show- 

 ing the reticulation. 10. Perichastium. 11. Perichastial leaf. 12. 

 V^aginula arid paraphyses. 13. Male bud. ' 14. Perigonial leaves. 

 15. Antheridium and paraphysis. 16, 17, 18. Capsules. 19. Por- 

 tion of double peristome. 20. Calyptra. — Details enlarged. 



Sec. 15. Hispida: cavils elongatus parce divisus Mspid\do~foliosus ; folia 

 cordato-lanceolata costa valida longe excurrente aristata. 



53. Hypnum hispidtjm, Eook.fil. & Wih. 



Hypnum hupidum, Hook. f. & Wils. in Lond. Jour. Bot. 3, p. 552 ; Flo. Antarct. 



p. 140, t. 61, f. 2. • 



Hypnum arutatum, Sulliv. in Proceed. Amer. Acad. Art. Sci. (Jan. 1854.) 

 Tricliostomum rlgidifolium, Tayl. in Lond. Jour. Bot. 3, p. 616. 



Hab. Bay of Islands, New Zealand. 



