271 Rydberg: Studies on the Rocky Mountain Flora 



Corallorrhiza Vreelandii sp. nov. 



Scape rather stout, 2-4 dm. high, dark purplish brown. 

 Sheaths, especially the lowest one, much inflated, purplish brown 

 with dark purple striations : flowers 6-15, about 15 mm. long, in 

 fruit drooping : sepals oblong, 7-8 mm. long, brown with 3 purple 

 stripes : petals similar but slightly broader and with 4 stripes : 

 lip ovate, entire, with a small gibbosity at the base : spur none. 



This is nearest related to C. striata, from which it differs 

 in the smaller flowers and narrower sepals and petals. The type 

 was found growing among alders and willows at the margin of a 

 small lake, at an altitude of about 2700 m. It was first dis- 

 covered by Mr. F. K. Vreeland, my enthusiastic associate and 

 pleasant companion in field work last summer. 



Colorado : Veta Mountain, 1900, Rydberg & Vreeland, 64.1S. 



Salix Wyomingensis sp. nov. 



A shrub i m. high or less. Bark of the main trunk gray ; 

 that of the branches dark-brown or grayish, shining, some- 

 what flaky ; young branches appressed-villous ; buds brown, 

 shining, pubescent when young : leaves small, rather crowded ; 

 petioles 2-4 mm. long ; blade oval or obovate, acute, 1-3 cm. 

 long, entire or exceedingly minutely callous-denticulate, upper 

 surface green and shining, slightly pubescent when young, glabrate 

 in age ; lower surface pale bluish green, appressed silky-villous : 

 aments borne on very short leafy branches, about 3 cm. long, 

 8-10 mm. in diameter: bracts brown, oblong or ovate, obtuse: 

 pedicels scarcely i mm. long : ovary villous, but green, when fully 

 developed only about 3 mm. long: style .5 mm. long: stigmas 

 short, slightly 2-cleft. 



This species is nearest related to 5. glaucops Anderson, but 

 differs in the small oval or obovate leaves and the much smaller 

 and greener ovaries. It grows at an altitude of 2100-2700 m. 



Wyoming : Eastern Slope of Big Horn Mountains, headwaters 

 of Clear Creek and Crazy Woman River, 1900, F. Tiveedy, 3434. 

 (type) and 34.33. 



Salix stenophylla sp. nov. 



A shrub 2—5 m. high. Bark of older stems light brownish 

 green, smooth ; that of the slender strict branches brown : young 

 shoots silvery pubescent : leaves narrowly linear, 'i^—'j cm. long, 

 about 3 mm. wide, acute, entire or minutely and distantly dentic- 

 ulate, permanently finely silky strigose, but not white : pistillate 



