HEPATICE. (LIVERWORTS.) (87) 687 
at the apex, persistent. Capsule oblong- eres dehiscing by 4-6 irregular 
valves ; pedicel ae Spores muriculate. Ela very long, attenuated at 
h end. Antheridia immersed in Aeokcwaa disk-like receptacles. 
(Named fo en. B.:. 0. “Taso a Belgian botanist.) 
1. D. hirstita, Nees. Dicecious ; frond 4/—6! long, 6!-10! wide, fork- 
re thin, deep green; fertile receptacle and involucres and margin of the male 
> woltiiielie chaffy at the apex.—Faces of rocks, Southern State 
ous ms of our Marchantiex : fruit rare. (Tab. VI. 
8. reese Raddi. Grear Liverworr. (Tab. VI.) 
Fertil tacl it Involucres 5-8, tubu- 
lar, 1-fruited, opened from the apex of the peduncle, coherent with the inte- 
rior surface of the receptacle, and with each other, opening at the lower end by 
aslit. Perianth none. Calyptra gma bell-shaped, ra 4 lobed at the apex. 
Capsule oblong-pyriform, dehiscing by 5-8 revolute segments, deciduous with 
re sho rt pedicel. Spores muriculate. eas short and thick. Inflorescence 
ious. Antheridia immersed in sessile oval disks, near the yee of the frond. 
bal forking, conspicuously reticulated, with a narrow distin A 
personal name.) 
énica, Corda. Fronds 3! -6! long, 5! - 9" wide. — Springy pl 
pee the largest of our Hepatic : seldom seen in fruit. (Tab. VI.) (ka. ) 
9 REBOUWLIA, Raddi. (Tab, VI.) 
Fertile receptacle serene ec or flattened, 4-5-lobed. Involucres 
4-5, 1-fruited, re and coherent with the lobes on the under side, 2- 
valved. Perianth non pirate minute, lacerate, persistent at the base of the 
capsule. Capsule cox, nearly sessile, rupturing irregularly at the sie 
Spores muricate. Elat erately long. Inflorescence moneecious. An 
ridia immersed in sessile sents oe Frond rigid ; the midrib bean: 
strong, and distinct. (Named for £. , an Italian botanist.) 
Raddi. Frond king, and increasing by joints 
base and apex ; fertile rec ae papillose on the summit. 
shady moist places. (Tab. VI u.) 
9. RB. microcéphala, Taylor. Distinguished from the preceding (of 
veh it may be a form) by the more delicate texture of the frond, and by the 
rv size of all its parts, except the peduncle, which is bide, long (3! -4'), 
with Sisciee pale at its base and apex. — Pennsylvania, Lesquer 
10. GRIMALDIA, Raddi. (Tab. VII) 
hemispherical or conoidal, 3-4-lobed. Invo lucres 3-4, 
each a distention of an entire lobe of the receptacle, and opening by a cleft 
below, 1-fruited. Perianth none. Capsule globose, filling the in nyolucre, dehis- 
cing by a circumcissile line near the middle. Calyptra pe: rsistent at the base of 
the capsule. Spores rugose, with a transparent border. Moneecious or dice- 
i 
