Musci. (mosses.) (23) 623 



below the apex; capsule incurved-oblong, annulate. — Bogs, in mountainous 

 districts. (Eu.) 



21. I>. spuriMm, Hedw. Stems usually short, thick and condensed; 

 leaves ovate-lanceolate, acuminate, undulated, serrate; costa serrated on the 

 back above, ceasing below the apex ; capsule cylindrical, slightly strumose and 

 incurved; when dry strongly ribbed. — (D. pallidum, Bryol. Europ.?) — Dry- 

 sandy soil, Ohio, and Southern States. (Eu.) 



22. D. nudulatum, Turner. Loosely csespitose; stems 4' -6' long, 

 robust; leaves widely spreading, the upper ones falcate-secund, linear-lanceo- 

 late from an oblong base, very much undulated, sharply serrate on the margin 

 and the back near the apex ; costa slender ; capsule cylindrical, strongly arcu- 

 ate, on long pedicels, 2 to 5 from the same pericheeth. — On the ground, in dry 

 woods ; common. (Eu.) 



23. D. Drummoodii, Mull. — Very like No. 22, but distinguished by 

 its longer and narrower leaves, not so shai-ply serrate, papillose only on the 

 back, and cirrhose-crisped when dry. — White Mountains of New Hampshire, 

 Oakes: Lake Superior, Agassiz. (Eu.) 



15. CERATODOIV, Brid. (Tab. L) 



Calyptra cuculliform. Operculum conic, subrostellate. Capsule cylindrical, 

 subcemuous, annulate, long-pedicellate. Peristome single : teeth 16, linear- 

 lanceolate, cloven nearly to the base into two efc[ual segments; their articula- 

 tions prominent. Inflorescence dioecious, terminal ; male flower gemmiform. — 

 Densely csespitose plants, with fastigiate ramification ; leaves lanceolate or lance- 

 olate-subulate, costate ; the areolae above dense, roundish and small, below larger 

 and diaphanous. (Name from Kepas, a horn, and oScoi', a tooth, the teeth of the 

 peristome being nodulose like a goat's horn.) 



1 . C. purpnrens, Brid. Leaves oblong-lanceolate, carinate, the margins 

 recm-ved ; costa excurrent ; capsule purplish-red, shining, ribbed and strumose 

 when dry. — Very common everywhere : on the ground. (Tab. I.) (Eu.) 



Tkibe V. LEUCOBRYi:JE. 



16. liEUCOBRYUIH, Hampe. (Tab. H.) 



Calyptra cuculliform. Operculum with a long-subulate rostrum. Capsule 

 oblong-cernuous, strumose, long-pediceUate. Peristome as in Dicranum. In- 

 florescence monoecious : male, flower terminal. — White or pale-glaucous mosses, 

 growing in dense compact masses ; stems dichotomously branched ; leaves lan- 

 ceolate-subulate, ecostate, composed of two or more layers of large, pellucid, 

 empty, rectangular-oblong, perforated cellules, with minute 3 - 4-sided intercel- 

 lular chlorophyUose passages. (Name composed of XeuKo's, white, and jBpvov, 

 a moss, from its pallid color.) 



1. Li. g^laucuin, Hampe. Stems 3' -6' high; leaves fragile, crowded, 

 convolute above; capsule reddish-brown, ribbed when dry. — (Dicranum glau- 

 cum, Hedw.) — About the roots of trees in moist ground, margins of swamps, 



