I
f d:;
Hep. f. 174. Riccardia pinguis, Carr, and
Pears. Exs. No. 59.
In most places on marshes.
Growing in loose and straggling patches.
Fronds i to 2 or 3 inches long, sometimes nearly
erect, oblong, narrowest at the base, thence
gradually widening
to the apex, which is
rounded and obtuse,
either simple, or with
one or two large divisions
or segments, and
other smaller ones,
plane or a little concave,
and swollen
(%• 18s); substance
1/ y j y fleshy and succulent,
opaque, y e l low i s h
green. Calyx nearly
hemispherical, with
an expanded mouth
and fimbriate margin.
Calyptra linear ob-
curved at the base,
red-brown, striate
long, cylindrical, straight,
obtuse. Capsule oblong,
furrowed, four-valved.
to each end.
or
Elaters simple, attenuated
Sub-order 2. M A R C H A N T IA CEzE.
Frondose, prostrate, areolate above, the
areoli uniporose, amongst the radicles beneath,
furnished with coloured seriate scales. A n draecium
either peltate and stipitate, or discoid
and subimmersed. Female capitulum on a
stout peduncle, continuous with the rib of the
fronds; two or many flowered. Capsule with
a short stem, globose, unistratose, circumscis-
sile, or split four to eight times at the apex.
G e n u s 4 1 . MARCHANTIA, Mich.
Fronds most ly f le sh y ; scales beneath on
each side 4-5 seriate, peduncle two, rarely
three, channelled. Capi tulum many- lobed,
radiating. Involuc re two to five flowered.
Per ianth three to five cut. Capsule stipitate.
A p e x cut in four to eight segments. Andraecium
on long peduncle (fig. 194)-
Marchantia polymorpha, Linn.
Fronds prostrate, overlapping, g ene ral ly
once or twice forked, i to 4 inches long,
of a dull-green c o lo u r ; male receptacle
stalked, flat on the top, cut into eight short,
rounded lobes. Female receptacle stalked,
hemispherical, deeply divided into eight to
ten rays, co ve r ing as many involucres.
Marchantía polymorpha, Ne e s Hep. Eur.
IV., 61 ; T a y l . Linn. Trans . X V I I . , 376;
Eng. Bot. t. 1 1 0 ; Hook. Br. FI. V., 102;
Co o ke Hep. fig. 18 6 ; Carr, and Pears.
Exs. 147.