142 
§ 149. New Mosses, by C. F. Austin. 
1. Pleuridium Ravenelii.—Paroicum, cespitosum, aureo-viride, 
sericeo-nitens ; caule erecto 1-2 lineas longo stricto simplici et sub- 
diviso parce breviterque stolonifero, foliis erectis strictiusculis infe- 
rioribus ovatis et ovato-lanceolatis (infimis in caule longiori squam- 
iformibus appressis) concavis apice complicato-carinatis, superioribus 
seu perichetialibus multum majoribus congestis a basi laxa lanceo- 
lata vel oblonga vel sepe obovato-oblonga superne carinata magis 
minusve raptim in subulam nunc breviusculam nunc longam angus- 
tissianam solidam complicato-canaliculatam sublevem subintegerri- 
mam productis, costa lata totam subulam occupante; capsula 
stramineo-fusca magna toto immersa vel lateraliter emergente rotun- 
do-ovali (raro subovata vel oblonga) apiculo parvo instructa, calyptra 
minuta obliquata cucullata, sporis pro genere magnis (an maximis ?) 
circiter $y unc. metientibus luteis papillulosis—P/. subulatum, 
SuLLiv. Mosses, etc.—Light sandy soil, S. Car. Ravenel ; New Jersey, 
James, Austin ; Rhode Island, Bennett ; Massachusetts, Jesup. § 
Color of the foliage, a changeable yellowish-green. Varies in 
damp situations, with the stems a little longer, leaves longer and less 
abruptly narrowed above. The European P/. subulatum, with which 
this species has hitherto been confounded, has stems a little longer, 
leaves gradually tapering from a much’ narrower base into a usually 
longer, somewhat flexuous, less opake, simply concave (not compli- 
cate), more or less distinctly serrate point, which is papillose-serrate 
on the back, the lower-most ones never ovate nor appressed, the 
inner ones of the pericheth much narrowed ; capsule ovate, with a 
larger apiculus ; spores much smaller (about 7759-735 Of an inch 
in diameter).—Nearest to P/. nervosum, Hook., as figured and de- 
scribed in Afusc. Exot. ¢. 105, but that is described as having the 
capsule acuminulate and rufo-fuscous, the leaves appear to be less 
abruptly subulate-acuminate and not canaliculate above (a striking 
character of moss); besides the inflorescence is supposed to be 
autolcous, © 
2. Pleuridium stramineum (Lesqx. olim).—(P/. sudulatum, 
LesQx., in Pacific Coast Mosses, p. 5.)—Inter P/. subulatum et PI. 
Ravenelit subintermedium, a priori differt caule stolonifero, foliis 
basi latioribus magis convolutis apice vix serratis dorso levibus, 
perichetialibus intimis haud angustioribus, magis subito angustatis, 
pedicello spe longiore, sporis paulo majoribus (circiter 44459 unc. 
metientibus) ; a posteriore paulo rubustior, magis stolonifer, foliis 
longioribus minus abrupte angustatis haud carinatis, sporis minori- 
bus, etc. 
*: Pleuridium Sullivanti. (P7. nervosum, Drumm., 2 Coll., n. 
6; SuLtiv. AZosses, etc., haud Hoox.)—Stems gregarious, clavate, 
slender 2-4 lines long, subarcuate, rigid, innovately branched. In- 
novations filiform, about equalling the stems. Leaves closely imbri- 
cated in a julaceous manner, appressed; the lower-most ones and 
‘those of the innovations ovate, submucronate, closely. and finely 
serrate-dentate ; areolation above close, narrowly and irregularly 
thomboidal, below lax, and somewhat quadrate; costa stout, per- 
current; upwardly (on the main stems) they are gradually somewhat 
’ 
