Hepaticw of North America. 35 



densely paleaceous underneath; peduncle about 2.5 cm. high. 

 pale, naked, sulcate. 



Hab. — Under wet rocks, Cal. (Bolander). 

 Bib— Fro. Phil. Acad. 1869, p. 229. 



IV. GRIMALDIA Raddi. 



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

 spheric or conoidal. papillose and porose at the apex. Cal3'ptra 

 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. Gemmge wanting. Named for I). Grimaldi, an Italian 

 botanist. 



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

 — 1.3 cm. long, 8 — 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 androecium obcordate. (G. frayrans Corda., 

 includes G. sessilis Sulliv.) 



fla&.— Thin soil on rocks. la. {Norton), 111. {Hall), Tex. ( Wright), 

 N. J. {Austin), N. Y. {Miss Waterbury), Conn. {Eaton). (Eu.) 

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

 Delin.—Sumv. Mosses U. S. t. VII. 

 E.rsic. — Hep. Bor.-Amer. No. 133. 



2. G. Oalifornica 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 is an unpublished spe- 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 intramarginal. Inner involucre wanting. Capsule 

 deoperculating above the middle. Andrax-iuiu snl)orbicuIar. 



