684 hepaticjE. (liverworts.) 
9. ANEIJRA, Dumortier. Aneura. 
Fructification arising from the under side near the margin of the 
frond. Involucre cup-shaped, very short and lacerate, or none. 
Perianth none. Calyptra ascending, nearly cylindrical, fleshy. Cap¬ 
sule pedicelled, oval or oblong, 4-valved. Elaters adherent to the 
apex of the valves, containing a single broad spiral fibre. Inflo¬ 
rescence monoecious. Antheridia immersed in the upper surface 
of receptacles proceeding from the margin of the frond ; which is 
fleshy and destitute of a midrib (whence the name, from a priva¬ 
tive, and vivpov , a nerve). 
1. A. SOSSiliS, Sprengel. Fronds irregularly Jobed (P-2* long, 
3" -5" wide); involucrum none; calyptra papillose at the apex ; pedi¬ 
cel 9 " - 12 ,; high ; sterile receptacles elongated and tapering deflexed 
processes. — Rotten logs, margins of swamps, Ohio, rare as high as 
Lat. 40°; very common in the Southern States. 
2. A* palmata, Nees. Fronds usually crowded (2 n - 
high), ascending, palmately divided, the divisions linear and obtuse; 
sometimes prostrate and creeping extensively; calyptra tuberculate. — 
Rotten logs, &c., common. 
3. A. UlUltifida, Dumort. Fronds prostrate, 2-pinnately di¬ 
vided, the divisions linear, narrow; whole plant broicnish-green. — 
Alleghany Mountains, on moist, rocky banks. 
10. PEL. El A, Raddi. Pellia. 
Fructification proceeding from the back of the frond near the 
apex. * Involucre cup-shaped, short, the margin lacerate. Peri¬ 
anth none. Calyptra oval, membranaceous, longer or shorter than 
the involucre. Capsule globose, pedicelled, 4-valved. Elaters 
long, free, with two fibres. Inflorescence monoecious. Anthe¬ 
ridia globose, immersed in the upper surface of the broad indeter¬ 
minate midrib of the frond. (A personal name.) 
1. P. epipliylla, Nees. Frond rather membranaceous, spar¬ 
ingly divided; divisions oblong, somewhat wedge-shaped, repand- 
lobed; calyptra exserted. — Moist, shady places, on the ground, form¬ 
ing patches 2P - 3 0 broad. 
11. HOELI A, Endl. Hollia. 
Involucre at first terminal, arising from the midrib of the frond, 
at length by the growth of the frond “dorsal, cup-shaped, short, 
lacerate. Perianth elongated-tubular, the mouth denticulate. Ca- 
