686 (86) HEPATICH. (LIVERWORTS.) 
Susorper Il. MARCHANTIACE®. 
Frondose and terrestrial perennials, furnished beneath with imbricating 
colored scales, and numerous tubular radicels tuberculate within ; recepta- 
cle raised on a peduncle springing from the apex of the frond (also from 
~ back, in No. 12), capitate or radiate, bearing from the under side pen- 
nt calyptrate capsules which open variously, but are not regularly 
Peay elaters with two spiral fibres. 
5. MARCHANTIA, L.  Broox-Liverworr. (Tab. VL) 
ertile rece e radiated. Involucres alternate with the rays, 2-valved,” 
lacerate ; enclosing 3-6 one-fruited 4-5-cleft perianths. Calyptra . oe at 
e glo le 
at the apex by several revolute segments. Spores smooth. Elaters long, slen- 
der, and attenuated at each end. Inflorescence dimcious. Sterile receptacle 
peduncled, shield-like, lobed or rayed, papillose on the upper surface by the s 
its of the immersed antheridia. Lentil-shaped gemme in cup-like receptacles 
on the back of the frond. Frond expanded, forking, with a broad diffused mid- 
rib. (Named after Nicholas Marchant, a French botanist.) 
ed polymérpha, L. Fertile receptacle deeply divided in a star-like 
; the rays 8-10, terete.—Shaded and moist places; very common. 
(Tab. VL) (Eu.) 
- disjiimecta, Sulliv. (Mem. Amer. Acad. 1. c. p. 63, t. 3.) Fertile 
spespiecls }-circular, radiate mae 9-lobed; the lobes cuneate, crenulate on the 
outer margin; sterile coe digitately lobed: about the size of No. 1.— 
Springy places, banks of the Alabama River, near Clairbourne : fruiting in May. 
‘mai 
6. ietene pomigi Nees. (Tab. VI.) 
Fertile receptacle hemispherical, 2-4-lobed, with as many rib-like rays alter- 
anulate 
gal. inane large, pedicelled este by 4-5 revolute segments. Spores 
berculate. Elaters short. Inflorescence diccious, rarely moncecious. An- 
cae paarrere in a peduncled peltate receptacle. Frond sparingly forked, 
increasing ii joints from the apex. (Named f ‘or L. Preiss, a German botanist.) 
1. P. commiutata, Nees. Fertile scascos prea angled by the 
prominent npc like rays ; conspicuous. urple. —§ 
places, Niagara Falls (Carey), Lake Superior ie Ph (Tab. VI.) (Eu.) 
7 DUMORTIERA, Nees. Harry Liverworr. (Tab. VL) 
Fertile receptacle convex, 2-8-lobed. Involucre 1-fruited, opposite to and 
connate with the lower surface of the lobes, horizontal, oblong, opening by a 
vertical slit at the outer extremity. Perianth none. Calyptra obovate, rupturing 
