162 BRYACEiE. [Ulota. 



8, of .1 double row of cells, equal in length. — Orthotrichicm 

 curvifolimn, Wahl. Fl. Lapp. 363 ; Bryol. Eur. t. 226. Weissia 

 curvifolia, Lindb. 1. c. 



Hab. Canada (Drummond, fide Scbimper). 



As in the case of U. Drummondli, we have been unable to find this 

 species in any of our sets of Drummond's mosses. 



4. U. Bruchii, Hornsch. Leaves linear-lanceolate from an 

 enlarged ovate concave base, long, flexuous, twisted when dry ; 

 perichffitial leaves erect, sulcate lengthwise at base ; basilar 

 cells long and narrow, vermicular, thick-walled ; those of the 

 borders enlarged, quadrate : calyptra deeply split, A^ery hairy : 

 capsule exsei'ted on a long pedicel, oval, long-necked, 8-striate, 

 i:)yriform and narrowed at the orifice when empty ; teetli long, 

 bigeminate, rellexed when dry ; cilia 8, rarely 16, filiform, as 

 long as the teeth, or when 16 alternately longer and shorter. — 

 Brid. Bryol. Univ. i. 794. Orthotrichicm coarctation^ and O. 

 dUatatmn, Bruch & Schimp., Bryol. Eur. t. 227. 0. Bruchii., 

 Wils. Bryol. Brit. 188, t. 45 ; Sulliv. Mosses of U. States, 34. 

 'Weissia Bruchii^ Lindb. 1. c. 



Hab. AVhite Mountains {Oakes)\ Upper Canada (Drummond). 



Similar to 0. crispum, but more robust, tlie leaves less crispate, rather 

 twisted when dry, the capsule larger, contracted and narrowed at the 

 mouth when dry. 



5. U. crispa, Brid. Tufts soft, yellowish green on the 

 outside, ferruginous within : leaves similar to those of the last 

 species, crispate when dry : calyptra very hairy : caj^sule oval, 

 with a very long collum descending to near the base of the 

 short ])edicel, constricted under the orifice, much lengthened, 

 fusiform, deei)ly sulcate when dry and empty ; teeth 8, con- 

 fluent, rarely separated into 16, lanceolate ; dividing line dis- 

 tinct ; cilia 8, stouter and shorter than in the last. — Muse. 

 Recent. Suppl. iv. 112. Weissia ulophylla, Ehrh. Beitr. i. 191. 

 Orthotrichum crispimi, Hedw. Muse. Frond, ii. 96, t. 35 ; Bryol. 

 Eur. t. 228 ; Sulliv. 1. c. 



Var. minor. Plants smaller ; leaves subovate at base. — 

 v. intermedia, Schimp. Syn. (ed. 2) 305? 



Hab. Trunks and branches of trees on mountains; not rare. The 

 variety near Lake Huron, Britisli America {Drummond, n. 153). 



6. U. Americana, Mitt. Differing from U. crispa only in 

 its shorter stem, the leaves twisted-crispate (not appressed- 

 twisted, as described by the author), the base of the leaves sub- 



