84 CRYPTOGAM I A. 



peristome linear, carinate, imperforate, arising from a narrow mem- 

 brane; ciliolae rudimentary. Columella large, conspicuous. Annulus 

 none. Operculum long as the capsule, subulate rostrate, from a sub- 

 conic base. Calyptra elongated-mitraeform, densely hispid, with erect, 

 simple, or jointed hairs, and furnished at base, which is more or less 

 cloven, with long, flexuose, reticulated, and dentate fimbriae. 



Near Chcetomitrium elongatum, Doz. & Molkb., which appears to be 

 a more robust species, with terete branches, leaves closely imbricating, 

 perichaetial leaves simply serrulate and smooth on the back, and the 

 fimbriae of the calyptra not denticulate. 



Hooheria Pliilippiensis, Mont. (Lond. Jour. Bot. v. 4, p. 10), another 

 closely related species, has also terete branches, but with perichaetial 

 leaves laciniated at apex. 



Plate 25, B. — IIoloblepharum Taitensis: plant, of the natural 

 size. Fig. 1. Portion of a branch. 2, 3, 4. Leaves. 5. Portion of 

 base of leaf, showing the reticulation. 6. Upper part of leaf, show- 

 ing the same. 7, 8. Capsules. 9. Portion of the peristome. 10. 

 Vertical section of same. 11. Portion of pedicel. 12. Perichaetium 

 and calyptra. 13. Perichaetial leaf. 14. Vaginula and fimbriae of 

 calyptra. 15, 16. Fimbriae of base of calyptra. — Analyses enlarged. 



2. IIoloblepharum speciosum, Sp. Nov. (Tab. 22.) 



H. dioicum, caule repente pinnatim ramoso, ramis complanatis confertis ; 

 foliis bif ariis oblong is acuminatis sub apice undulato-constrictis serru- 

 latis concavis subsiriatis brevissime bicostatis margine veflexis, cellulis 

 linearibus parce papillulosis, perichcetialibus apice plvs minus dissectis 

 serrulatis; capsula oblongo-elUptica asymmetrica erecto-cemua, pedi- 

 cello longiusculo superne tubercidoso, operculo peristomio et calyptra 

 Holo. rugifolii. 



Hab. Samoan or Navigator's Islands. 



Larger than the last or the next species. Stem 3 to 5 inches long, 

 prostrate, furnished with fascicles of rootlets throughout its length, 



