OF THE EORTY->"I>~TH PARALLEL OE LATITUDE. 27 



» 



A very small pale yellowish species, in the older portions rusty. 

 Unlike any other known North American Ulota, having the leaves 

 scarcely twisted when dry, and the very thick peduncle, which is 

 the elongated heck of the capsule, when dry plicate, as well as 

 the capsule itself, which is pale brown. 



TKICHOSTOMACE^, Mitten. 



* Tortulce. 



Htmenosttlitjm, Brid. 



H. curvirostre, (Gymnostomum) Hediv. 

 Hab. Rocky Mountains, Bourgeau. 



Barb el A, Hedw. 

 B. rubiginosa. Dioica, B. vineali habitu staturaque affinis, foliis 

 siccitate appressis eurvatis, bumidis patentibus,inferioribus ovatis,supe- 

 rioribus e basi ovata ad insertionem angustata angulis decurrentibus 

 subulato-lanceolatis acutis, margine recurvo, nervo in apicem crassius- 

 culum percurrente, cellulis minutis rotundatis subobscuris minute 

 papillosis, perichaetialibus erectis majoribus e basi elongato-ovali tur- 

 gide laxe convoluta nervo excurrente subulato-apiculatis, tbeca in 

 pedunculo rubro ovali-cylindracea erecta, operculo conico dimidio 

 breviore, annulo e triplici serie cellularum composite, peristomio 

 nullo. 

 Hab. N.W. America, Douglas. 



In the absence of peristome, allied to the East Indian JS. 

 rufescens ; but the present is a rather larger species, with more 

 subulate leaves, not so straight, and stiffly appressed when dry ; 

 they are also more contracted at the base. 



B. rigidula, (Bryum) Dicks. 

 Hab. Vancouver Island, Lyall. 



The specimens are too old and too young to show the peristome, 

 but they appear to belong to this species. 



B. fallax, Hedw. 

 Hab. Rocky Mountains, Bourgeau. 



A barren moss, but which appears to belong to this species. 

 B. insulana, De Notaris, usually confused with 2?. vinealis, Brid., 

 was gathered in California by Beechey. 



B. RUBELLA, Roth. 



Hab. 4 Rocky Mountains, Bourgeau. 



Tortela, Schreb. 

 T. tortuosa, Linn. 

 Hab. Rocky Mountains, Bourgeau. 



