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JUNGERMANNIA LAMELLATA.
Jungermannia caule erecto diviso, foliis dense bifariam
imbricatis horizontalibus æqualiter bilobis, lobis ovatis
conduplicatis dorso lamellatis, lamellis spinoso-
dentatis apice inciso-pinnatis, pinnis denticulatis, stipulis
bilobis spinoso-dentatis. ( T a b . XLIX.)
H a b . Staten Land, prope Terra del Fuego, America meridionali.
D . Menzies, 1787.
Caulis erectus, digitalis et ultra, simplex vel subdichotome di-
visus. Folia magna, arcte bifariam imbricata, horizontalia,
fusco-viridia, areolis parvis rotundatis reticulata, æqualiter biloba,
lobis oblongo-ovatis, conduplicatis, appressis, verticalibus,
dorso lamtillato, lamellis 8 vel 10 longitudinaliter affixis,
spinoso-dentatis, a|)ice margine pinnato-incisis, segmentis denticulatis.
SlipulcB inajusculæ in duos lobos ovatos spiuoso-
dentatos divisæ, infra stipulas squamulæ parvæ simplices vel
divises reperiuntur. Fructus non vidi.
If the structure of the leaves of Jungermannia appendiculata
and J . Tlioiiarsii, already figured in this work, excites our attention
as differing most remarkably from what we h’ave hitherto
known of the genus, those who take delight in beholding the
varying hand of Nature in her minutest productions will be no
less gratified by tlie examination of the present species. In those
just mentioned we perceive a lesser lobe or division of the leaf,
arising from the surface or disk of the larger portion ; but here,
from the exterior surface of two distinct loiies, are lamellæ or
plates, totally unlike any thing I am acquainted with in vegetable
oeconomy, running nearly the whole length of the lobes, and
distinctly toothed. The extremities of the leaves are cut into
lobules, or rather pinnules, as in J . appendiculata. Beneath
the stipules are tufts of small scales, as there are likewise in another
Menziesian Jungermannia, which I shall have occasion to
publish.
Fig. 1, plant nat. size. Fig. 2, leaf and stipule. Fig. 3, leaf
expanded. Fig. 4, apex of a lobe.—magn.
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