Musct Exorict.—TZhouarsiani. 
JUNGERMANNIA THOUARSII. 
JSungermannia caule adscendente, foliis bifariam imbri- 
catis horizontalibus inzequaliter bilobis, lobis vertica- 
libus ovatis spinoso-denticulatis, minoribus majoris 
lobi paginee affixis, stipulis quadratis emarginatis den- 
ticulatis. (Tas. XLVIIL.) 
Has. Insula Francie. D, Aubert du Petit Thouars. 
Caules 3-4-unciales, basi decumbentes, dein erecti, sepe ramosi, 
‘subtus radicibus longiusculis, intense purpureis, obsiti. Folia 
sublaxe bifariam imbricata, horizontalia, flavo-viridia, areolis 
minutis reticulata, biloba, lobis conduplicatis, verticalibus, sub- 
undulatis, spinoso-denticulatis, inzequalibus, posteriorilus ma- 
.joribus, anterioribus paginz majoris lobi, versus ejus medium 
per totam longitudinem affixis. Perichetialia reliquis similia. 
Stipule inferiore parte caulis nulle, superne sensim majores, 
Subquadrate, margine denticulate, subreflexee, apice emargi- 
nate. 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 Tas. XV. of this work (J. appendiculata), 
but which comes from a very different part of the world, and is 
characterized by the undivided larger lobes of the leaf, never cut 
into pinne-like divisions, and the quadrate and simply emargi- 
nate 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.—magu, 
