655 
MUSCI. (MOSSES.) 
transverse undulations of its leaves perceptible to the naked eye, and 
with numerous pedicels (2-5) from the same pcrichcclh. (D. polyse- 
tum, Schwcegr.) — On the ground ; rather rare. 
3. D. congcstum, Bridel. Stems erect, fastigiately branch¬ 
ed ; leaves crowded, rather one-sided , linear-lanceolate , pointed, keeled, 
serrulate, somewhat crisped when dry; capsule ovate-oblong, nod¬ 
ding; lid long-beaked. — Mountainous districts. Smaller than No. 1, 
and in denser tufts : the capsule striated after losing the lid. 
4. I>. Scliraderi, Weber & Mohr. Stems erect; leaves 
crowded, erect , not turned to one side , linear-lanceolate, rather obtuse , 
slightly denticulate at the apex, when dry somewhat wrinkled ; cap¬ 
sule ovate-oblong. — Mountains of New York. 
5. I>. fulvuni, Hook. Stems ascending, branched ; leaves not 
turned to one side , lance-awl-shaped , flexuous, crisped when dry, the 
nerve strong; capsule oblong-elliptical, erect; lid with an awl-shaped 
erect beak. — On rocks, among the Alleghany Mountains. 
6. I>. flagellarc, Hedw. Stems erect, densely crowded, 
emitting from near their summits slender and rigid innovations fur¬ 
nished with minute imbricated leaves; stem-leaves linear , awl shaped , 
one-sided; capsule cylindraceous, erect. — Woods, on decayed Jogs, 
common. 
7. D. longifolilllll, Ehrh. Stems branched, ascending; 
leaves falcate , one-sided, very long, bristle-awl-shaped, slightly serru¬ 
late, the nerve very broad ; capsule oblong, erect. — High mountains 
of Penn., on rocks and trees. 
8. D. lieteroiliallimi, Hedw. Stems erect, nearly simple ; 
leaves falcate , one-sided, awl-shaped from a broad base, slightly serru¬ 
late ; capsule obovate , unequal, slightly nodding ; lid with an oblique 
awl-shaped beak. — Shaded banks, frequent 
9. I>. varilllll, Hedw. Stems nearly simple; leaves erect- 
spreading, sometimes one-sided, lance-awl-shaped ; capsule ovate , ob¬ 
lique,nodding ; lid conic, pointed, rather short. — Moist,clayey banks; 
very common, much smaller than any of the preceding, 7"-10" high. 
10. I>. cerviClllatllin, Hedw. Stems simple; leaves rather 
one-sided, lance-awl-shaped, the nerve very broad; capsule ovate-glo¬ 
bose, nodding, strumose ; lid obliquely beaked. Boggy places, New 
Jersey : grows in dense tufts, 8"— 10" in height. 
LEITCOBRYACEJ2. 
25, LEUCOBBYUM, Hampe. Leccobhyum. 
Calyptra cuculliform. Capsule terminal, oblong. Peristome 
single, of 16 slender 2-cleft densely-jointed teeth ; the lobes equal, 
divergent. Lid with an awl-shaped beak.-Leaves composed of 
