NEW HEPATICE. 387 



pules minute, compared with the size of the leaves. In 

 Ptycanthus sulcatus, Nees, from Java, the leaves are far more 

 distant, while their lobules are subrotund. 



3. P. cyclostipa, Tayl. ; caule implexo, procumbente vage 

 ramoso, surculis compressis; foliis imbricatis patenti-re- 

 curvis, oblongis, obtusissimis, integerrimis ; lobulis quad- 

 rato-ovatis, involutis, unidentatis j stipulis reniformi-rotun- 

 dis, integerrimis j calyce terminali, subexerto, obcordato, 

 compresso, supra piano, subtus ventricoso, quadrialato, alis 

 ciliatis, ciliis dentatis. 



Hab. On bark. Cincinnati, Ohio. 



Patches very pale green, the older brownish, lying close to 

 the bark. Stems about | an inch long. Perichsetial leaves 

 large, nearly covering the calyx, the lateral toothed, the sti- 

 pular .entire. Calyx crowned with a minute tube. This is 

 far minuter and paler than P. Mackaii, Nees, while the fringed 

 calyx is quite distinctive, and, indeed, more like that of 

 Lejeunia applanata, Nees. 



4. P. baccifera, Tayl. ; caule subdisperso, planiusculo, elon- 

 gato, procumbente, vage ramoso j foliis imbricatis, patenti- 

 bus, oblongo-ovatis, integerrimis, apice recurvis, margine 

 ventrali retiusculo, sinuato-plicato; lobulis minutis ligulatis 

 subglobose involutis; stipulis majoribus, rotundo-reni- 

 formibus, imbricatis, subemarginatis j calyce laterali, com- 

 presso, oblongo, ore bilabiato, dentato ; perichaetiis minutis, 

 foliis lateralibus bilobis, lobis subsequahbus, apice in- 

 cur vis. 



Hab. New Holland. Hook. Herb. 



Pale olive. Stems 2-3 inches long, complanate ; branches 

 patent, few, the terminal shoot elongated. Leaves and sti- 

 pules very thin and with large distinct cells. Leaves closely 

 imbricated, flaccid ; the minute lobule, when unfolded, Jigu- 

 late, but in its natural involute state appearing spherical and 

 opaque. Calyx lateral and nearly sessile, three times as high 

 as the perichatium, whose leaves are very minute. Calyx 

 rather concave on the upper side, convex on the lower, desti- 

 tute of ribs, if a minute opaque mesial line on the upper side 



F F 2 



