142 LEJEUNEAE OF THE UNITED STATES AND CANADA 
half the distance from apex to the strongly curved line of inser- 
tion, with broad, erect, triangular, obtuse to acute or apiculate 
lobes and obtuse to acute sinus, rounded to cordate at base, 
margin entire: inflorescence dioicous : $ inflorescence sometimes 
on a leading branch, sometimes on a short branch, innovating on 
one or occasionally on both sides, the innovations usually florifer- 
ous and sometimes repeatedly so, occasionally sterile ; bracts 
complicate, deeply and unequally bifid, the lobe obliquely spread- 
ing, ovate, rounded or sometimes apiculate at apex, margins as In 
leaves, 0.7 mm. long, 0.4 mm. wide, lobule ovate to lanceolate, 
rounded to acuminate at the apex, 0.25 mm. long, 0.15 mm. wide: 
bracteole free, oblong-elliptical to oval, convex (postically), 0.7 
mm. long, 0.5 mm. wide, bifid one fourth to one third with tri- 
angular, acute or apiculate lobes and broad obtuse to acute sinus: 
perianth about half exserted, obovoid, 0.8 5 mm. long, 0.55 mm. 
wide, cuneate toward base, gradually narrowed toward the 
rounded apex and with a short beak, antical surface plane or with 
a low and indistinct keel near apex, postical keel long, broad and 
bluntly two-angled, lateral keels slightly compressed: 4 inflo- 
rescence not seen: spores measuring 16 u in short diameter, elon- 
gated, irregularly angular, thick-walled, with small ridge-like thick- 
n ngs, arranged radiately in circles. 
On bark. Eustis, Florida (Underwood, 1380 /.2.), the type- 
locality. 
Cheilolejeunea polyantha resembles to a considerable extent the 
South American Pycnolejeunea papulosa Steph.,* a species described 
by Spruce under the name Lejeunea (Pyeno- Lejeunea) contigua, vat. 
latifolia.+ The new species, however, is much less robust than 
P. papulosa, its leaves are less convex and its leaf-cells have thin- 
ner walls and less conspicuous trigones; its underleaves are rela- 
tively longer, and its perianth has an obsolete antical keel and a 
longer beak. 
The closely imbricated leaves and underleaves of C. polyantha 
will at once distinguish it from any of our other Lejeuneae Schizo- 
stipae, although in texture and color it somewhat resembles Zuos- 
molejeunea opaca and E. duriuscula. From the first of these, it 
differs also in its more widely spreading and narrower lobules, in 
its broader underleaves, and in its broader perianth and perichaetial 
ciabatta cima eer N cii i E 
* Hedwigia, 35: 126. 1 
H 
896. 
ep. Amaz. et And. 248. 1884. Afterwards distributed in Hep. Spruceanae 
as a distinct species under a manuscript name, 
