MUSCI. (MOSSES.) (23) 623 
below the apex; capsule incurved-oblong, annulate. — Bogs, in mountainous 
districts. (Eu.) 
D. sptirium, Hedw. Stems usually short, thick and condensed ; 
leaves ovate-lanceolate, acuminate, undulate , Serrate; costa serrated on the 
incurved; when dry strongly ribbed.— (D. pallidum, Bryol. Europ. ?)—D.: 
sandy soil, Ohio, and Southern States. (Eu.) 
22. D. undulatum, Turner. Loosely cxspitose; stems 4/-6! long, 
robust ; leaves widely spreading, the upper ones falcate-s ecund, linear-lanceo- 
and the back near the apex; costa slender; cap cylindrical, strongly arcu- 
ate, on long eae 2 to 5 from the same pericheth.— On the e ground, in dry 
woods ; common. (Enu.) 
23. D. retinas mdii, Mull. — Very like No. 22, but distinguished by 
its longer and narrower mi not so sharply serrate, papillose only on the 
back, and cirrhose-crisped when dry. — White Mountains of New Hampshire. 
Oakes: Lake Superior, pies 
15. CERATODON, Brid. (Tab. L) 
Calyptra cuculliform. Operculum conic, se ate. Capsule cylindrical, 
subcernuous, annulate, long-pedicellate. Peristome single: teeth 16, linear- 
lanceolate, cloven nearl the base into ual segments; their articula- 
tions pro: Inflorescence dicecious, termin wer ge 
male fl rm 
Densely cxespitose plants, with fastigiate ramification ; leaves lanceolate or lance- 
olate-subulate, costate ; the areolx above dense, roundish and d small, below larger 
and diaphanous. (Name from xépas, a horn, and ddéyv, a wet the teeth of the 
peristome being nodulose like a goat’s horn.) 
i: Gs purpttreus, Bri 2 bl J late, carinate, the margins 
recurved ; costa excurrent; capsule purplish-red, s shining, iBbea and stramose 
when nae — Very common everywhere: on the ground. (Tab. I. ) (Eu) 
Trine V. LEUCOBRYESR. 
16. LEUCOBRYUM, Hampe. (Tab. IL.) 
Calyptra orm. Operculum with a long-subulate rostrum. Capsule 
iibincenttiid, ames a3 -pedicellate. Peristome as in Dicranum. In- 
flores scence moneeci : male. flower terminal. — White or pale-glaucous mosses, 
growing in dense compat masses ; stems dichotomously Lamhe leayes lan- 
ceolate-subulate, tate, somnjioned of two or more layers of it pellucid, 
empty, sbitigicas tite, perforated cellules, with minute 3-4-sided intercel- 
- lular chlorophyllose passages. (Name composed of Aev«ds, white, ‘an Bpitov, 
Ese ates ts pallid color.) 
- L. glaticum, Hampe. Stems 3/-6! high; leaves fragile, crowded, 
oahelle above; capsule reddish-brown, ribbed when dry.— (Dicranum glau- 
cum, Hedw.) — Maint denies St ane te moist ground, margins of swamps, 
