LOPHOCOLEA 115 
branch ; 8 bracts several pairs, commonly smaller than the leaves, 
more erect and imbricate, with an incurved lobule at the saccate 
base, antheridia large, usually solitary. Archegonia numerous, 
terminal on the main stem or on somewhat elongated branches. 
bracts usually somewhat larger than the leaves, often more 
deeply bifid or more dentate. Perianth exserted, triangular-pris- 
matic, at least when young, with the third angle always dorsal, 
mostly 2-4 times longer than broad, 3-lobed at the wide mouth, 
the lobes rarely somewhat truncate and entire, usually bifid and 
more or less ciliate-dentate or spinose. Calyptra free, thin, shorter 
than the perianth. Capsule ellipsoid-oval, dehiscing to the base 
by straight rigid valves; capsule wall of several layers of cells, 
those of the external layer thick, with columnar or imperfectly 
semiannular thickenings, those of the inner layers thin, the inmost 
with numerous semiannular bands; setalong.  Elaters bispiral. 
Key to the Species. 
Leaves all bidentate or bifid, with long subulate-acuminate teeth or segments ; autoicous. 
3 : 
$ . cuspidata. 
Upper leaves merely retuse, or entire and truncate ; paroicous. 2. L. heterophylla. 
1. LOPHOCOLEA CUSPIDATA (Nees) Limpr.; Cohn, Krypt.-Fl. 
Бене. r: 303^ 1977 
Lophocolea bidentata cuspidata Nees, Naturgesch. Eur. Leberm. 
451327, 1836, 
Pallid-green, closely caespitose or repent-spreading: stems 
mm. long, .15~.27 mm. in diameter, bearing (especially the 
fertile) frequent diverging lateral branches, occasionally dichoto- 
mous ; root-hairs few or moderately abundant : leaves ovate to ob- 
long-ovate, -63-1.6 mm. x .45-1.3 mm., almost equally narrowed 
to the apex on both sides, bidentate with a broad crescentic sinus 
ог on the more slender branches sometimes bifid !4 their length 
with a rather narrow subobtuse sinus, segments (or teeth) long, 
subulate-acuminate, subequal and mostly parallel; leaf-cells usu- 
ally pellucid, somewhat incrassate, the superior and median 24- 
48 n, thin-walled, trigones minute or wanting, cuticle smooth : un- 
derleaves patent, often only bifid and extrorsely unidentate on 
either side, or the subulate, commonly divergent, principal seg- 
ments again bifid : autoicous ; antheridia апа archegonia borne in 
most cases on more ог less elongated ventral or latero-ventral 
branches : androecium terminal, rarely median; 4 bracts some- 
What similar to the leaves or smaller, less acutely lobed, and more 
™Mbricate, saccate dorsally at the base, the inflexed margin com- 
monly provided with one or two teeth or lobes ; antheridia mostly 
