Moore — On the llosses of Ireland. 
443 
Hab. On stones and loose earth, on the banks of mountain rivu- 
lets. Plentiful in a fruiting state by the side of the stream in 
Kelly's Glen, Dublin, 1839. Stream at O'SuUi van's Cascade, 
Killarney ; Connemara, Galway, &c. 
Sect. Sypnum, Bryol. Europ. 
Capsules mostly leptodermous, ovate-oblong or roundish, inclined, 
erecto-cernuous or cernuous ; lid hemispherical, conic- mammillate 
or mucronate ; segments of inner peristome carinate, entire, or 
here and there slightly perforated. Leaves squarrose, sub- 
squarrose, secund or falcate-secund, costate, ecostate, or shortly 
bicostate ; areolation compact ; cellules linear or roundish ; basal 
cells larger, longer, and more pellucid. 
Diagnosis of Species, 
a. Leaves obtuse, or shortly acuminulate. 
Monoicous. 
Stem erect, subpinnate ; leaves loose, sub- 
squarrose, cordate, imbricated, entire ; 
nerve reaching nearly to the apex, . 40. H. coedifolitjm. 
Dioicous. 
Stem prostrate, pinnately branched ; leaves 
crowded, oblong-ligulate ; obtuse, sub- 
cucullate at apex, nerve reaching nearly 
to point of leaf, . . . . . 41. H. sahmentostjm. 
Stem subdichotomously divided ; leaves 
loosely imbricate, erect-patent, obtuse, 
entire ; nerve reaching half way to apex, 42. H. stramtnetjm. 
Stem prostrate ; leaves ovate, nerveless, en- 
tire, the lower squarrulose, upper closely 
imbricate ; capsule oblong, cernuous ; 
lid conical, 43. H. cuspidatum. 
Stem erect, simply pinnate ; leaves closely 
imbricate, ovate-acuminate, concave, api- 
culate, nerved half way to apex ; capsule 
ovate, cernuous, . . . . . 44. H. ptjrum. 
Stem erect, simply pinnate ; branches curved ; 
leaves closely imbricate, sub-erect, ellip- 
tical, apiculate, concave, entire, two- 
nerved at base ; capsule ovate, cernuous, 45. H. schreberi^ 
