90 HEPATICE. (LIVERWORTS.) 
4. A. multifida, Dumort. Fronds prostrate, 2-pinnately divided; the 
divisions linear, narrow; whole plant brownish-green. — Alleghany Maeiotaind, 
on moist, rocky banks. 
15. STEETZIA, Lehm. (Tab. 20.) 
Involucre at first terminal, arising from the midrib of the “ar : length by 
the growth of the frond dorsal, cup-shaped, short, lacerate. Perianth elongated- 
tubular; the mouth denticulate. nad oo alling the ie ir reps 
torn at the apex. Capsule oval. Elaters filiform, free, with two fibres. Infl 
rescence dicecious. Antheridia dorsal on the -midtib, covered by minute fmnbrie 
ated perigonial leaves. Frond with a ‘cas midrib. (Named for Dr. J. Steetz, 
a German botanist. 
1. S. Lyéllii, Lehm. Frond simple or 2-cleft, delicate in texture, oblong- 
linear, the margin slightly waved, entire or obscurely serrate ea -4! long, 3! - 
5/' wide). — On the ground, in wet or springy places. (Tab. 20.) (Enu.) 
16. PELLIA, Raddi. (Tab. 21.) 
Fructification proceeding from the back of the frond near the apex. Invo 
cre cup-shaped, short; the margin lacerate. Perianth none. Calyptra ak 
ees Ug longer or shorter than the involucre. Capsule globose. El 
rs long, free, with two fibres. Inflorescence moncecious. Antheridia globose, 
ene rsed in the upper surface of the broad indeterminate midrib of the frond. 
(A personal name.) 
es 
i. P. epiphylla, Nees. Frond rather membranaceous, sparingly 
vided ; its pies oblong, somewhat wedge-shaped, repand-lobed ; et 
exserted. — Moist, shady places, on the ground, forming patches 2°-3° broad. 
(Tab, 21.) u. 
17. BLASIA, Mich. (Tab. 21.) 
Fructification in an oval cavity in the midrib of the frond. Involucre none. 
Perianth a fusiform utricle, vanishing early. Calyptra i? Capsule oval- 
globose, bursting through the frond near its tadag Antheridia immersed in the 
frond and covered by dentate scales. Gemme globose, issuing by a slender as- 
eending tube from their large flask-like ke, which are immersed in the 
frond. — (A personal name.) 
1. B. pusilla, L. Frond 7!’-12" long, 2-3" wide, oe 
simple or forked, or stellately expanded, the margins pinnatifidly si —On 
the ground, sides of ditches, &e., New York. (Tab. 21.) (Eu ‘a 
II. Vegetation foliaceous (i. e. leaves and stem distinct). 
# Leaves succubous; the apex of each leaf lying under the base of the next. 
18. FOSSOMBRONITIA, Raddi. (Tab. 21.) 
Perianth terminal, or by innovation dorsal on the main stem, subeampanulate 
the mouth large, crenate-lobed. Involucral leaves 5-6, minute, subulate, co 
