MUSCI. (MOSSES.) 623 



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

 districts. (Eu.) 



21. D. spuriiim, 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. undulatum, Turner. Loosely caespitose; stems 4-6' long, 

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

 late from an oblong base, very much undulated, sharply sen-ate on the margin 

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

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

 woods ; common. (Eu.) 



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

 its longer and narrower leaves, not so sharply serrate, papillose only on the 

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

 Oakes: Lake Superior, Agassiz. (Eu.) 



15. CERA TO BOX, Brid. (Tab. 15.) 



Calyptra cuculliform. Operculum conic, subrostellate. Capsule cylindrical, 

 subcernuous, annulate, long-pedicellate. Peristome single: te'eth 16, linear- 

 lanceolate, cloven nearly to the base into two equal segments ; their articula- 

 tions prominent. Inflorescence dioecious, terminal: male flower gemmiform. 

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

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

 and diaphanous. (Name from /ce'pas, a horn, and o&oi/, a tooth, the teeth of the 

 peristome being nodulose like a goat's horn.) 



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

 recurved; costa excnrrent; capsule purplish-red, shining, ribbed and strumose 

 when dry. Very common everywhere : on the ground. (Tab. 15.) (Eu.) 



TRIBE V. LEUCOBRYE^. 



16. I^EUCOBRYUUI, Hampe. (Tab. 16.) 



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

 oblong-cernuous, strumose, long-pedicellate. 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 chlorophyllose passages. (Name composed of AevKoy, white, and /3pvoi, 

 a moss, from its pallid color.) 



1. It. glaucum, Hampe. Stems 3' -6' high, leaves fragile, crowded, 

 convolute above ; capsule reddish-brown, ribbed when dry. (Dicrannm jrlau- 

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



