676 
MUSCI. (MOSSES.) 
bricated, scythe-shaped, serrulate, smooth ; capsule ventricose-ovale; 
lid conic, acute. — Shady woods, on the ground. 
* * Leaves nerved to beyond the middle. 
50. II* rugosilllft, Ehrhart. Stems ascending, rather pinnate- 
ly branched; leaves closely imbricated, ovate-lanceolate , scythe-shaped 
and one-sided at the tips of the branches, rugose, serrulate, the mar¬ 
gins narrowly revolute; capsule cylindrical, nodding; lid conic, short- 
beaked.— Exposed places; dry, rocky banks. A robust species, fruit¬ 
ing very rarely. 
* * * Leaves nerved to the apex, lanceolate from a heart-shaped base. 
51. II. filicilllim, L. Stems ascending, pinnately branched; 
leaves turned to one side, obliquely pointed, serrulate, flat on the mar¬ 
gins ; perich. leaves striate; capsule cylindrical, curved; lid conic, 
acute. — Springy places, particularly among limestone rocks. 
52. H. pallldosuvil, Sulliv. Stems procumbent, the ascend¬ 
ing divisions simply pinnate ; branches rather compressed ; leaves en¬ 
tire, pointed, erect-spreading, plaited, the margins reflexed; fruit un¬ 
known. (Muse. Mleghan. No. 7.) —Cranberry marshes, N. Ohio. 
47. HOOKERIA, Smith. Hookeria. 
Calyptra mitriform, uneven at the base. Capsule lateral, une¬ 
qual. Peristome double ; the exterior of 16 linear-lanceolate teeth ; 
the interior a keeled membrane divided into 16 cilia. Lid conic, 
beaked. Inflorescence monoecious or dioecious : sterile fl. axilla¬ 
ry, gemmiform. (Dedicated to Sir Wrn. J. Hooker, who began 
his distinguished botanical career with the study of Mosses.) 
1. II. lilceilS, Smith. Stems procumbent, sparingly branched; 
leaves imbricated, 2-ranked, spreading, ovate, obtuse or acute, entire, 
loosely reticulated, diaphanous, nerveless; capsule ovate, horizontal 
by the curving of the pedicel. — Ohio; on the ground beneath drip¬ 
ping rocks. A large Moss, well marked by its flat stems and branch¬ 
es, with pale shining-green foliage, of a membranous texture. 
48. CLIMACIUM, Weber & Mohr. Tree-Moss. 
Calyptra cuculliform. Capsule lateral, equal and symmetrical- 
Peristome double ; the exterior of 16 linear-lanceolate teeth ; the 
interior of 16 keeled processes splitting along the keel, arising 
from a very narrow membrane. Lid convex-conic, short-beaked. 
Inflorescence dioecious : sterile fl. axillary, gemmiform. (KXi/xa- 
kiov , a small ladder; from the appearance of the inner peristome.) 
1. C. deildroides, Weber & Mohr. Stems creeping, subter¬ 
raneous, throwing up erect tree-like innovations, which are nearly 
