665 
MUSCI. (MOSSES.) 
1. P. intricatum, Hedw. Stems creeping, the branches en¬ 
tangled; leaves imbricated, ovate-lanceolate, one-sided, nerveless; cap¬ 
sule erect, oblong-orate ; lid conic, with a short oblique beak. — On 
the bark of trees, very common. Fruits copiously : pedicels | f long. 
Robust specimens exhibit an inner peristome of 16 free keeled pro¬ 
cesses, as long as the teeth. 
2. P. re pens, SchwtEgr. Stems creeping, very much branch¬ 
ed ; branches erect) crowded ; leaves closely imbricated) oval) short-point¬ 
ed) with a short forked nerve at the base , margins reflexed ; capsule 
erect) ovate-cylindrical. (Neckera serfeea, Auct )—Old fences, logs, 
&c., forming dense brownish-yellow patches. Inner peristome free 
and conspicuous. 
3. p. SllbcapillutUIll, Hedw. A smaller plant, much like 
No. 1; well marked by its minutely muricate pedicel) inclined capsule , 
and sparsely hairy calyptra. — On trees. 
4. p. liirtelluni, Hedw. Stems creeping, throwing up dense¬ 
ly-crowded cylindrical branches; leaves deltoid) pointed) minutely 
fringed on their margins, nerveless ; capsule oblong, somewhat ven- 
tricose at the base; teeth of the peristome very long and white. 
Woods, investing the bases of young trees (particularly of Hickory 
and Hornbeam) with dense glaucous-green mats. 
5. P. decumbens, Schwaegr. Stems creeping, rather pin- 
nately branched ; branches erect, crowded; leaves ovate) pointed , scr 
rulale at the apex , the nerve wanting or very short; capsule erect, o 
long-cylindrical; teeth of the peristome densely articulated, firm, o 
tuse. (P. brachyclcidon. Bride!.)— Bark of trees, Massachusetts. 
(Arkansas.) Rare, not well known. 
* * * Obscure species , known only from Bridel s description. 
6. P. ennitum, Bridel. Stems erect, rather pinnately branch¬ 
ed; leaves densely imbricated, ovate-lanceolate, with a ten ri 1 
point, the strong nerve reaching beyond the middle of t le ea ’ c j 3 
sule erect, oblong ; lid elongated-conic, slightly beake . rets, 
Massachusetts. 
7. P. apicillatnin, Bridel. Stems decumbent. bronclnng, 
the branches compressed; leaves ovate, concave, wit 1 a c _ 
point; nerve extending to the middle of the leaf; frui un 
Salem, Massachusetts. 
40. LEPTODON) Weber. Leptodon. 
Calyptra large, cuculliform, hairy. Capsule lateral, g 
Peristome double ; the exterior of 16 linear-lanceolate tee » 
interior, and the inflorescence, as in Pterogonium- ’ 
somewhat beaked. (Name composed of A«rro$, 5 » 
tooth.) 
56 
