OF ARTS AND SCIENCES. 283 



banks of mountain rivulets. — This remarkable moss, in its dimor- 

 phous leaves and their arrangement, may be looked upon as the acro- 

 carpous analogue of Rhacopilum, as Calomnion is of Hypopterygium. 

 About the size of Mniuni cuspidatum. Leaves thin, rather firm, at 

 first pale green, when old vinous red, the margins and costa deeper- 

 colored. Pedicels f - 1 inch long, occasionally two from the same 

 perichgeth. 



Gen. CLASMATODON, H. ^ W. 



65. C. PARVULUS, Hampe ; Sulliv. Mosses of U. States, p. 60, 4" 

 Icones Muse. ined. t. 79. — On roots and trunks of trees. The speci- 

 mens vary from those of the Southern United States in a fuller devel- 

 opment of the teeth of the peristome, and in the occasional presence 

 of a few scattered hairs on the matured calyptra. 



Gen. FABRONIA, Raddi. 



66. F. CuBENSis {sp. 710V.) : monoica, statura F. pusillce ; foliis 

 ovato-lanceolatis integerrimis ultra medium costatis, cellulis ovali- 

 rhomboideis laxiusculis chlorophyllosis, alaribus subquadratis granu- 

 losis ; capsula oblonga subapophysata ; perist. ext. dentibus sedecem 

 per paria approximatis fuscidulis longiusculis, int. ciliis octo sequilongis 

 filiformibus ; operculo conico acuto. — On trees. — Remarkable for its 

 double peristome, the inner of 8 cilia. 



Gen. CRYPH^A, 3fohr. 



67. C. FiLiF.ORMis, Sivartz. ; Hedw. Muse. Frond. 3, t. 16. — On 

 coffee-bushes. The excurrent portion of the costa of the perichsetial 

 leaves is scabrous. 



68. C. ? LEPTOCLADA (sp. nov.) : majuscula rigida ; caule primario 

 repente aphyllo, secundario pendulo subdendroideo-ramoso, ramis hie 

 illic ramulos singulos fasciculatosve minutissimos appresso-foliosos pro- 

 ferentibus ; foliis patentibus e basi subauriculata ovato- vel oblongo- 

 acuminatis concavis margine erectis superne leniter serrulatis, cellulis 

 alaribus permultis quadratis mediis lineari-fusiformibus prosenchyma- 

 tosis apicalibus elongato-ellipticis, costa debili subpercurrente ; capsula 

 desiderata. — Bushes in ravines. — Grows in rather large masses. 

 Secondary stems about 2 inches long, 1^-2 lines wide: foliage pale 

 green and yellowish. A noticeable feature is the lateral fascicles of 

 very minute straight shoots from the upper part of the branches : these 

 shoots with their distant closely appressed ecostate lanceolate leaves 

 are about 2 lines long and ^^0- of a line wide, nearly concealed by the 

 principal leaves. 



