TE gen ra nT ee eee ie 
11 
constrictam fere cupulatis) leniter repando-undulatis integris vel 
subemarginatis e basi radiculigera subventricosa et subappressa 
oblique patentibus (ad caulem valde oblique insertis) parumper de- 
eurrentibus, in caule sterili etiamnum magis concavis distinctius 
Marginatis erecto-verticalibus ; perianthio parvo subovato cum in- 
Volucri foliis plus minusve connato haud vel parum exserto basi ra- 
diculoso primum apice subtriquetro acutiusculo et a lateribus sub- 
compresso, uno latere plano vel 1-2- altero 3( -5)-plicato, demum 
teretiusculo atque apice subrostelliforme, plicis omnino bistriolatis ; 
capsula ovali-globosa ; calyptra seepe violacea. 
Hab. On rocks along ‘rivulets, near Closter, N. J.; associated 
with Jung. pumila, With., and J. Jossombronioides, Aust. ; also in 
Coschocton County, Ohio, Sullivant. 
Allied to Jungermannia crenulata, Smith ; but more robust and 
densely czespitose ; leaves much more concave (when dry almost 
up-shaped ), composed of smaller cellules, less strongly margined, 
much more obliquely attached to the stem, and never appressed ; 
color never red ; perianth smaller, the angles not keeled, etc. ; be- 
sides, the habitat is different. 
Very distinct from Alicularia scalaris in the want of amphiga- 
Stria, in the less crowded more spreading much less emarginate 
leaves, ete. 
Cells of the leaves subrotund or suboval, obtusely angular, some- 
what enlarged but scarcely elongated towards the base; those on 
the constricted margin (one or two somewhat interrupted rows) 
More or less quadrate and crowded, and often. becoming whitish 
by age. 
On account of the straightish simple stems, and strongly concave 
‘leaves (with a constricted margin), the sterile plant has a striking 
resemblance to some forms of Sphagneccetis communis, Nees. 
Mode of growth much as in Jung. fossombronioides ; but smaller, 
“and with a differently shaped perianth, ete. 
§. Jungermannia Wattiana, Aust.—J. caule crassiusculo 2-4 lineas 
longo fragili subflexuoso arcuato subintricato valde radiculoso, 
gemmiparo spiciformi; foliis erecto-subverticalibus subpatulisve 
Subovatis concavis emarginato-bilobis, inferioribus lobis plerumque 
acutis, superioribus acutis obtusisve sepe apiculatis incurvisque, 
sinu Imnulato angulatoye, areolis subrotundis majusculis ; amphi- 
rake, subobsoletis valde difformibus plerumque ex ovato subpili- 
oO 
Tmi-acuminatis in subulatam transeuntibus margine hie illie 
ciliato-appendiculatis apice incurvis; perianthio terminali parvo 
inflato lageniformi-ovato, apice (contracto) albido, ore ciliato ; in- 
volucri foliis param majoribus subundulatis minus profunde bilobis; 
colore fusco-viridi vel brunneo. hie 2 
Hab, On the ground; associated with Sphagnecetis Macounii, 
nia brevicaulis, ete., in the Lake Superior region, Macoun, 
ee 
; ae Communicated by D. A. P. Watt, Esq., of Montreal, Canada. 
bout the size of J. excisa, Dicks—Remarkable for the small 
lageniform-ovate perianth, its contracted mouth shorter than in J. 
Gillmani, The gemmiparous stems are much as in J. Helleriana 
