Ulota.] BRYACE^. 163 



oval, not generally as enlarged as in U. crispa^ resembling in 

 that point those of U. crispida. — Journ. Linn. Soc. viii. 26. 



Hab. Lake Huron {Todd); British America {Drummond, n. 153, with 

 U. Bruchii). 



As completing the diagnosis of the species, the author says that the 

 cells in the middle of the lanceolate part of the leaves number three 

 within the thousandth part of an inch, and only two in U. crispa, and 

 two and a half in U. crispida. In the plants we have examined from 

 Drummond's sets, the corresponding cells of U. americana are generally 

 broader than in U. crispa. The borders of the leaves also are flat and 

 entire, not recurved nor suberose as described by Mitten. Specimens are 

 frequently much mixed in tlie Drummond sets, and it appears that in our 

 sets, at least, n. 153 merely represents a variety of U. crisjya, apparently 

 the U. intermedia of Schimper. 



7. U. crispula, Brid. Differing from V. cris2')a in its 



smaller size, the green color of the tufts becoming ferruginous 



or brown with age, the leaves a little shorter and broader, more 



twisted-crisjiate Avhen dry, the capsule shorter and with shorter 



neck, thin, more nan-owly striate, pale yellow, shortened pyri- 



form-truncate and open-mouthed or slightly contracted under 



the orifice when diy and empty, and in the shorter teeth. — 



Bryol. Univ. i. 793. Orthotrichum crispulum, Bruch; Bryol. 



Eur. t. 228 ; Sulliv. Mosses of U. States, 34. Weissia crisjnda, 



Lindb. 1. c. 



Hab. With the former, but more common; plains and hilly districts 

 of the middle and northern zones. 



8. U. phyllantha, Brid. Densely tufted, greenish brown : 

 leaves long, linear-lanceolate, much twisted and beautifully cir- 

 cinate ; costa j^ercurrent, often thickened and bearing at the 

 apex an agglomeration of small brown articulate cylindrical 

 bodies : flowers and fruit unkno^wn. — Muse. Recent. Suppl. iv. 

 113. Orthotrichum phyllanthum, Steud. ; Bryol. Eur. t. 223. 

 0. fasciculare, LaPyl. ; Brid. Bryol. Univ. i. 790. Weissia 



phyllantha^ Lindb. 1. c. 



Hab. Trunks of trees, Oregon (E. Hall); Vancouver Island (Wood); 

 Newfoundland (LaPylaie). 



* * * J^eaves striate, rigid. 



9. U. HutcllinsiSB, Schimp. Tufts greenish brown ; plants 

 erect, brittle when dry : leaves close, imbricate, rigid when dry, 

 erect, slightly open when moist, oblong-lanceolate, acute from 

 the ovate base ; borders reflexed : calyptra very hairy : capsule 

 on a more or less long pedicel, gradually narrowed to a long 



