Hepaticce of North Antrrict/. :r> 



densely paleaceous underneath; peduncle about 2.5 cm. high, 

 pale, naked, sulcate. 



Hob. Under wet rocks, Cal. (JBolander}. 

 Bib Pro. Phil. Acad. 1869, p. 229. 



IV. GRIMALDIA RADDI. 



Carpocephalum peduncled, 3-4-lobed, decurrent, hemi- 

 spheric or conoidal, papillose and porose at the apex. Calyptra 

 rupturing by lobes. Capsule circumscissile in the middle. 

 Androecium on the same or a different thallus, disciform, oval, 

 obovate or obcordate, immersed in the apex of the thallus, pap- 

 illose. Thallus thick, deeply canaliculate, dichotomous, inno- 

 vating from the apex, articulated, closely areolated and porose- 

 scabrous above, the thick keel covered with imbricated scales 

 often extending beyond the margin as a fringe. Epidermis very 

 thick. Gemmae wanting. Named for I). Grimaldi, an Italian 

 botanist. 



1. G. barbifrons Bisch. Thallus linear-obcuneate, 0.6 

 1.3 cm. long. 3 4 mm. wide, 2-lobed at the apex, pale-green 

 with distinct white pores above, strongly involute when dry, 

 the scales often extending far beyond the margin and becoming 

 whitish; peduncle profusely paleaceous at the base and apex; 

 monoecious, the androacium obcordate. (G. fragrans Corda., 

 includes G. sessilis Sulliv.) 



Hob. Thin soil on rocks. la. (Harton), 111. (Hall), Tex. (Wright), 

 N. J. (Austin), N. Y, (Mm Waterbury), Conn. (Eaton). (En.) 

 Bib. Syn. Hep. p. 550 ; Hep. Europ. p. 156. 

 Delin. Sulliv. Mosses U. S. t. VII. 

 Exsic. Hep. Bor.-Amer. No. 133. 



2. G. Californica Gottsche, MS. is an unpublished spe- 

 cies from California. 



V. DUVALIA NEES. 



Carpocephalum peduncled, hemispheric, entire, cavernose- 

 papillose above, concave and not decurrent beneath. Outer in- 

 volucre intrarnarginal. Inner involucre wanting. Capsule 

 deoperculating above the middle. Androecium suborbicul;ir. 



