683 
HEPATICJE. (LIVERWORTS.) 
by joints from the extremities, green above, purple beneath ; the pe¬ 
duncle bearded at its base and apex; fertile receptacle papillose on 
the summit.— Mountain districts, in shady, moist places. 
7. FOIBRIARIA, Nees. Small Liverwort. 
Fertile receptacle hemispherical, peduncled, concave beneath, 
expanded at the margin into 4 large and pendent bell-shaped trun¬ 
cate 1-flowered involucres. Perianth 1-flowered, oblong-oval, 
projecting for half of its length beyond the rim of the involucre, 
the projecting portion splitting lengthwise into 8-12 free fringe¬ 
like segments. Calyptra with a long style, fugacious. Capsule 
sessile, globose, dehiscing by an irregular circumscissile line near 
the middle. Inflorescence monoecious. Antheridia immersed in 
the substance of the frond, not collected into disks. Frond much 
thickened in the middle, with a keel-like midrib. (Name from 
fimbria , a fringe, alluding to the perianth.) 
L F. tenella, Nees. Frond elongated-wedge-shaped, nearly 
simple, notched at the end (6"- 10" long, 2"-4" wide), green above, 
purple on the margins and underneath. — Alleghany Mountains, in 
shady places on the ground. 
Suborder IV. JUNGERMANNIACEiE. Scale-Mosses. 
Frondose (Nos. 8- II) or foliaceous plants, terrestrial or 
on trees. Capsule dehiscent lengthwise into 4 valves. 
Spores mixed with elaters. 
8. METZGERIA, Raddi. Metzgeria. 
Fertile fructification arising from the lower surface of the mid¬ 
rib. Involucre 1-leaved, scale-like, at length ventricose and 2-lobed. 
Perianth none. Calyptra ascending, oblong-obovate, rather fleshy. 
Capsule pedicelled, ovate, dehiscing by four equal valves. Ela¬ 
ters with one spiral fibre, adherent to the tip of the valves. Inflo¬ 
rescence dioecious : antheridia 1-3, inclosed by a 1-leaved invo¬ 
lucre on the under side of the midrib. Ovate gemmae aggregated 
on the attenuated tips of the linear frond : midrib distinct. (Named 
for Metzger , a German botanist.) 
I* furcata, Nees. Fronds linear, thin and membrana¬ 
ceous, forking or proliferous, with white pellucid hairs. Hilly dis¬ 
tricts, on rocks and the bark of trees. 
