263 



lata, papillosa, marginibus integerrimis ad vel paulum ultra 

 medium revolutis, nervo viridi, biconvexo, apice subtereti, 

 crasso, basi 0,08 — 0;1 mm lato , superne serjsim tenuiore, 

 cum apice evanido , lamina ubique unistratosa , cellulis 

 incrassatis, rotundato - quadratis, valde chlorophyllosis, 

 0;008 — OjOlO mm, utrinque papillosis, basilaribus paulum 

 raajoribus, subquadratis; bract eae perichaetii foliis 

 similes, sed longius acuminatae, basi laxius reticulatae, in- 

 timae minorcs, marginibus planis. Caetera ignota. 



Washington, Cascaden^ . Roslyn, ad rupes arenaceas 



(n. 560 a). 



A B. tophacea sat simili notis supra datis bene distia- 

 guitur. 



Tortella caespitosa (Scliwaegr.) Limpn 

 Illinois: Chicago, c. fr. (1759 — 1761). 



Tortula princeps De N. (T. Mulleri Br. et Sch.) 



L b 



Oregon: Mount Hood^ c. fr. (1009). Washington: Cas- 



caden^ Easton, c. fr. (562), Weston, c. t'r. (471), 

 Enumclaw, c. fr. (333 — 34). Tacoma, c. fr. (176). 

 Vancouver Island: Victoria^ c. (r. (18, 19, 20). 



Tortulamontana (Nees)Lindb. (Syn.T. intermedia Brid.) 



Idaho: Coeur d'Alene, c. fr. (1149 — 50). Montana: Rocky 



Mountains, pr. Ravalli, ster. (1257), Helena,- ster. 

 (1350), Helena, c. fr. (1353). Washington: Cascaden, 

 Roslyn, c. fr. (559), Ellensburgb, ster. (943). 



Tortula ruralis (L.) Ehrh. 



Wyoming: Yellowstone National Park, Grand Canon, 



6000 ped. alt., ster. (1449 — 52). Montana: Rocky 

 Mountains pr. Ravalli, c. fr. (1259), Garrison (1359). 

 Washington : Cascaden , Easton , c. fr. (561 , 563), 

 Ellensburgh, c. fr. (941), Kahchess Lake, c. fr. (792), 

 Rigi pr. Clealum Lake, c. fr. (883). 



var. ruraliformis (Besch.). 



Montana: Rocky Mountains, Garrison; c. fr. (1356 — 58). 



Washington: Cascaden, Ellensburgh, ster. (942). 



Tortula laevipila (Brid.) Schwaegr. 



Washington : Cascaden , Kahchess Lake , ster. (791 , f. 



brevipila). Vancouver Island: Victoria, c. fr. (18). 



Tortula mutica Lindb. (Syn. T. latifolia Bruch.) 

 Oregon: Mount Hood, Columbia pr. Hood River, ad trun- 



cos Populi, c. fr. (1011 — 1013). 



18 



