m u s c i. 25 



annulus, and part of capsule wall. 20. Antheridia and perigonial 

 leaves. 21. Perigonial leaf. — Details enlarged. 



2. Grimmia ovata, Web. & Mohr. 

 Grimmia ovata, Web. & Mohr; Bryol. Europ. 3, Grimm. Monogr. p. 21, t. 17. 

 Hab. Mauna Kea, Hawaii, Sandwich Islands. 



3. Grimmia streptophylla, JSp. Nov. (Tab. 6.) 



O. monoica parvula laxe ptdvinata; foliis dense imbricantibus spiraliter 

 tristichis ovalibus oblongisve cymbiformi-coricavis,pericIiaetiaMbiis multo 

 majoribus elongato-oblongis pllcafis, omnibus obtusissimis subeontinuo- 

 costatis; capsula immersa urniformi-ovali lQ-dentata exarmulata, oper- 

 culo convexo umbonato; calyptra minima conica. 



Hab. Andes of Peru, near Banos. 



A rather small species, growing in loose blackish-brown cushions. 

 Stems 8-10 lines high, fastigiately branched, radicles few. Leaves 

 densely imbricate in three spiral rows, ovate or oblong, boat-shaped ; 

 the perichaetial much larger, elongated-oblong, plicate ; all very obtuse, 

 and with a costa reaching nearly to the apex ; areolation minute, cel- 

 lules quadrate above, oblong below. Capsule immersed, erect on a 

 short straight pedicel, entirely concealed by the perichaetial leaves, 

 oval, truncate, wide-mouthed, exannulate; teeth of the peristome 

 lanceolate, obtuse, perforated, above yellowish. Operculum slightly 

 convex, mamillate. Calyptra minute, conic. Monoicous ; male buds 

 large ; perigonial leaves broad-ovate, constricted and subtubular at the 

 apex; antheridia 10-15 ; paraphyses short and few. 



Plate 6, B. — Grimmia streptophylla: two fertile plants, of the 

 natural size. Fig. 1. Portion of a plant, showing the spiral direction 

 of the leaves. 2. The same, the perichaetial leaves opened to show 

 the capsule. 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15. Leaves. 16, 

 17, 18, 19. Cross sections of leaf. 20. Portion of base of leaf, show- 



7 



