682 HEPATICJE. (LIVERWORTS.) 
4. MABCHANTIA, L. Brook-Liverwort. 
Peduncled fertile receptacle radiated. Involucres alternate with 
the rays, 2-valved, lacerate, inclosing 3-6 one-flowered 4-5-cleft 
perianths. Calyptra opening at the apex, persistent. Capsule 
globular, pendulous, exsertly pedicelled, dehiscing at the apex by 
several revolute segments. Inflorescence dioecious. Sterile re¬ 
ceptacle peduncled, shield-like, lobed or rayed, papillose on the 
upper surface by the apices of the immersed antheridia. Lentil¬ 
shaped gemmae in cup-like receptacles on the back of the frond. 
Frond expanded, forking, with a broad diffused midrib. (Named 
for Marchant, a French botanist.) 
L JJI* polymdrpha, L. Fertile receptacle deeply divided in 
a star-like manner, the rays 8—10, terete. — Shaded, moist places; 
very common. 
5. FEGATELLA, Raddi. Great Liverwort. 
Fertile receptacle conical-mitriform, membranaceous, peduncled. 
Involucres 5—8, tubular, 1-flowered, suspended from the apex of 
the peduncle, and coherent with the interior surface of the recep¬ 
tacle, opening by a longitudinal slit. Perianth none. Calyptra 
persistent, bell-shaped, opening at the apex by 2 — 4 lobes. Cap¬ 
sule globular, dehiscing by 5 —8 revolute segments, deciduous 
with its short pedicel. Inflorescence dioecious. Antheridia im¬ 
mersed in sessile roundish disks near the apex of the forking 
frond. Midrib distinct, narrow. (Apparently a personal name.) 
1. F. conica, Corda. Fronds 3'-6' long, 5"-9" wide.— 
Springy places; the largest of our Hepaticae; seldom in fruit. — A va¬ 
riety occurs with sessile fertile receptacles. 
6. BEBOUILLIA, Raddi. Rebouillia. 
Fertile receptacle conic-hemispherical or flattened, 1 - 5 -lobed, 
peduncled. Involucres 1—5, opposite to and coherent with the 
lobes of the receptacle on the under side, 2-valved. Perianth 
none. Calyptra minute, lacerate, persistent at the base of the 
capsule. Capsule globose, nearly sessile, rupturing irregularly at 
the apex. Spores fnuricate. Inflorescence monoecious. Anthe¬ 
ridia immersed in sessile crescent-shaped disks. Frond rigid; the 
midrib broad, strong, and distinct. (A personal name.) 
1. R. tiemispllcierica, Raddi. Frond forking and growing 
