14 f [ 2 5 4 5 ]
M A R C H A N TI A androgyna,
Four-lobed Marchantia.
CRYPTOGAM1A Hepaticce.
Gen. Char. Male, Calyx salver-shaped, with numerous
anthers imbedded in its disk.
Female, Cal. peltate, flowering beneath. Capsules
bursting at the ir summit, Seeds attached to elastic
fibres.
Spec. Char. Calyx of the female flowers hemispherical,
half four-cleft, of four cells.
Syn. Marchantia androgyna. Linn. Sp. P h l6 0 5 .
Dicks. Crypt, fa s c , 2. 17. I I. Sicc. fa s c . 4. 21.
With. 886. Hull. 277, Sm. in Rees’s Cyclop,
n. 7-
M , quadrata. Scop. Cam. ed. 2. 355. t. 63.
Hepatica minor angustifolia, capitulo hemisphaerico.
Mich. Gen. 3. t , 2. f . 3. -
Lichen pileatus angustifolius dichotomus, Dill.
Muse. 520. t. 75, f . 3 .
M r . DICKSON has gathered this species, unknown to preceding
British botanists, on wet rocks in Scotland. We found it
in that country in 1782, and have since received specimens from
the Rev. Dr, Stuart.
The fronds are narrower than in our other species, see t. 210,
503, 504; but we find them not so linear as Micheli’s figure,
and that of Dillenius, express. The essential difference consists
in the female calyx being* not, as Linnaeus says, entire at the
edge, but divided half way into four lobes, each lobe embracing a
singularly prominent case, containing several capsules, and opening
by numerous longitudinal chinks. At least such is their
structure in a Swiss specimen, represented separately in our plate.
The Scottish ones are not enough advanced perhaps to show the
same thing, yet we find no other difference. Dillenius has. engraved
a Jamaica specimen, sent him by P. Collinson.