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JUNGERMANNIA THOUARSII.
Jungermannia caule adscendente, foliis bifariam imbri*
catis horizontalibus inæqualiter bilobis, lobis verticalibus
ovatis spinoso-denticulatis, minoribus majoris
lobi paginæ affixis, stipulis quadratis emarginatis denticulatis.
(T a b . XLVIII.)
H a b . Insula Franciæ. I ) . Auhert du Petit Tliouars.
Caules 3-4-iincialcs, basi decumbentes, dein erecti, sæpe ramosi,
subtus radicibus longiusculis, intense purpuréis, obsiti. Folia
sublaxe bifariam imbricata, horizontalia, flavo-viridia, areolis
minutis reticulata, biloba, lobis conduplicatis, verticalibus, sub-
undulatis, spinoso-denticulatis, inæqualibus, posterioribus majoribus,
o.nteriorilus paginæ majoris lobi, versus ejus mediuin
per totain longitudinem affixis. PerichoeilaUa reliquis sirnilia.
StipulcB inferiore parte caulis nullæ, superne sensim majores,
subquadratæ, margine denticulatæ, subreflexæ, apice eniargi-
natæ. Calyx terminalis, ovato- subcyathiformis, ore aperto,
laciniato, laciniis latiusculis spinoso-dentatis.
This is a plant the general structure of whose leaf is similar
to that figured at T a b . XV. of this work {J. appendlculata),
but which comes from a very different part of tb.e world, and is
characterized by the undivided larger lobes of the leaf, never cut
into pinnae-like divisions, and the quadrate and simply emarginate
apex of the stipules. It is besides considerably smaller ;
and at first sight its general habit resembles starved specimens
of J. sphagnoides, so much so that the learned botanist to whom
we are indebted for its discovery had actually marked it in his
MSS. as the same species.
Fig. 1, plants nat. size. Fig. 2, portion of a plant with a
calyx. Fig. 3, leaf. Fig. 4, inferior stipule. Fig. 5, superior
ditto. Fig. 6, extremity of a leaf.—magn.