MUSCI. (MOSSES.) (21) 621 
§ 2. DICRANELLA, Schimp. — Small species : leaves smooth, more or less serr 
at the apex; the areolation uniform at the base: calyptra not inflated: ke 
mostly cernuous, eee trumose: diccious. 
4, cerviculatum, Hedw. Densely cexspitose, Ree a 
stems short, 4!/'"-6" high; leaves lanenphasir initia errate at apex, some- 
what secund, with a etl costa; capsule gibbous, short, sibiiatin, narrowly 
annulate, strumose. — Bogs, New Jersey, Torrey. (Eu.) 
varium, Hedw. Stems 4”—5! high; leaves lanceolate-attenuated, 
eit uit at the apex, prea costa slightly excurrent; capsule oval or o 
long, more or less oblique and incurved, exannulate ; operculum large, shortly 
rostrate. — Clay-banks, in fie spas: very common: variable. (Eu.) 
D. débile, Hooker wih sere ponent small forms of No. 5; 
stems 2/!—3" hich, mostly simple, leaves erect ; the lower short, pant 
rather obtuse ; the upper heeron renin ver and with entire reflexed 
margins, costate to wth apex; capsule oval, erect; operculum with a small conic 
base, and ai subulate er RE as long as the capsule ; peristome small: 
teeth 2- sian ere “way, below red, strigillose, the segments scabrous; annulus 
very large, AC , triple ; aie rather large ; pedicel yellow. — Clayey soil, 
Mobile, Alabam 
7. D. vaisbiwus, Turner. Stem short, gregarious; leaves reddish, lax, 
inear-lanceolate, faleate-secund, the margins plane, obscurely denticulate ; areo- 
lation loose; capsule erect, oval or mies i obovate, Rayne operculum 
large, with a short rostrum. —Wet clay-banks, Pennsylvania, Lesqu — Re- 
sembles No. 5. oid 
8. D. subulatum, Hedw. Loosely aera stems 5!-10! high; 
leaves secund, saahieaie sa teasinds long-subulate from a eolate base, entire ; 
ta predominant; capsule ovate, gibbous, cernuous, ae when 3} annu- 
er rather large ; pedicel red. — White Mts., New Hampshire, Oakes. (Eu 
9. D. heterématllum, Hedw. Somewhat larger than the last; leaves 
secund, slightly falcate, lanceolate-setaceous ; costa heavy, vanishing at the sub- 
denticulate apex ; capsule cernuous or prt i erect, more or less obovate and gib- 
bous, obliquely plicate when dry; pedicel pale yellow. — Var. ortHocARPUM 
has an erect cylindrical capsule. ee ground; very common. (Eu. 
§3. DICRANUM Prorerr. — Mostly large species: stems often densely tomentose 
oa their whole a with radicular eben leaves with enlarged yellowish and di- 
hanous cellules at their basal angles: capsul erect. 
* Monecious: leaves loi: capsule cernuous. 
10. D. Blyttii, Bryol. Europ. Czspitose; branches fragile ; leaves wits 
dull-green, flexuose, Ao secund, crisped when dry, the costa slightly excur- 
cont; —_— oval, when dry strumose; annulus simple.— Alpine and su 
ine ite Mo untains of New Hampshire, Oakes. (Eu.) 
ll. D. Starkii, Web. & Mohr. Stems 1/-3’ long, decumbent at the 
when dry, the costa shortly excurrent; capsule oblong, gibbous, strumose, stri- 
ated ; annulus double. — With the last. (Eu.) 
