450 MINNESOTA BOTANICAL STUDIES. 



dular-pubescent : lower petals deeply lobed : pistils and fruits 

 glabrous ; seeds black with light wings. Sierra Nevada, Cali- 

 fornia and San Bernardino mountains, altitude 6,000 to 10,000 

 feet, north to Alaska (f). 



38. D. glaucescens RYDB. Mem. N. Y. Bot. Gard. i : 155. 

 1900. 



Rootstock thickened : stem somewhat angled, plant finely 

 pubescent especially above, or in age glabrate, somewhat glau- 

 cous, i to 2 feet high : leaves divided to near the base into 5 to 

 8 cuneate divisions, these generally deeply 3-cleft : raceme 

 simple, rather short, lower bracts linear, longer than the flowers, 

 the upper ones subulate ; pedicels and flowers densely pilose, 

 pedicels spreading : flowers dark blue or variegated with white, 

 somewhat nodding ; spur straight, equalling the sepals ; upper 

 petals yellowish white, tipped and tinged with blue : ovaries 

 densely hairy ; fruit not seen. Rocky places, Cedar mountains, 

 Montana, and Yellowstone Park. Differs from D. glaucum in 

 its shorter and more pilose inflorescence, lower and more tufted 

 habit, and in hairy ovaries (f). 



Var. multicaule RYDB. Mem. N. Y. Bot. Gard. i : 156. 

 1900. 



More bushy than the type and less pubescent : leaf segments 

 longer and narrower : flowers smaller ; spur curved. Rock 

 slides, Cedar Mt., Montana (f). 



39. D. Nuttallii GRAY, Bot. Gaz. 12 : 54. 1887. 



D. exaltatum var. Nuttattii HUTH, Delph. N. Am. 9. 



1892. 



D. Columbianum GREENE, Erythea, 2: 193. 1894. 

 D, simplex NUTT. ex Huth, Bot. Jahrb. 20: 472. 1895. 



Stem erect, simple, nearly glabrous, leafy, li to 2^ feet high : 

 leaves thinnish, 3~5-parted, parts divided into many linear-ob- 

 long lobes : racemes long, many-flowered ; sepals deep blue, 

 ovate, sparingly pubescent, shorter than the spur ; petals blue 

 or upper ones yellow, lower ones white-bearded: follicles 3, 

 pubescent, rather erect; seeds thin, dark with yellow wings. 

 Summer. Low open woods, Columbia River. 



Var. leucophaeum n. var. 



D. leucophceum GREENE, Erythea, 3: 118. 1895. 



A slender whitish plant, with sepals and lower petals white, 

 upper petals blue. Oregon (f). 



