OF ARTS AND SCIENCES. 281 



Gen. LEPTOTHECA, Schwcegr. 



53. L. Wrightii {sp. nov.) : pseudo-monoica robusta densissime 

 csespitosa ; caule subsimplici apice congesto-folioJo ; foliis obovatis spa- 

 thulato-obovatisque tenuiter marginatis laxe mnioideo-areolatis, costa 

 excurrente breviter cuspidatis, perichaetialibus minoribus ; capsula 

 erecta gracili longe cylindracea annulata ; perist. ext. dentibus lon- 

 gissimis linearibus valde papillosis, int. ciliis rudimentariis ; operciilo 

 conico breviuscule rostrato ; calyptra dimidiata subulata. — Decayed 

 logs in dense woods. — A large species growing in compact dark-green 

 turfs. Stems 2^ — 1 inch high, matted together by reddish-brown tomen- 

 tose radicles. Leaves crisped when dry, small and scattered on the 

 lower part of the stem, rapidly increasing in size and crowded above. 

 Pedicels f-1 inch high. Capsule light olive-green when ripe, the 

 rim of the mouth coral-red. Annulus large, compound. Operculum 

 whitish. Teeth of the peristome slender, remotely articulated, yellow- 

 ish white above, reddish below, strongly papillose throughout. Minute 

 male plants, evidently from the germination of spores, occur on vari- 

 ous parts of the fertile plants. According to description, L. speciosa, 

 H. & W., from the mountains of Jamaica, appears to be near our plant, 

 but that species has ovate-lanceolate leaves. 



Gen. DISSODON, Grev. ^ Am. 



54. D. ? ROTUNDiFOLius, G. Mull. Synop. 1, p. 140 ; Hooh. Muse. 

 Exot. t. 7G. — Moist rocks in ravines. 



Gen. OCTOBLEPHARUM, Hedw. 



55. O. ALBiDUM, Hedw. Muse. Frond. 3, p. 15, t. IG. — Decayed 

 logs, etc. 



Gen. BARTRAMIA, Hedw. 



56. B. TENELLA, C. Mull. Synop. 1, p. 481. — Shady banks, on 

 mountain-sides. 



Gen. POGONATUM, Beauv. 



57. P. CuBENSE (sp. 710V.) : p. Lielmanniano manifeste proximum, 

 distinctum tamen statura graciliore, foliis oblongis brevius acuminatis 

 laxioribus latioribus et brevioribus, capsula papillosa, etc. — On dry 

 banks. 



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