446 MINNESOTA BOTANICAL STUDIES. 



Var. geraniifolium n. var. 



D. ger an i (folium RYDB. Bull. Torr. Club, 26 : 583. 1899. 



Differs from the type only in having broader leaf segments, 

 bractlets variable in size, and pedicels slightly more spreading. 

 Charles valley, Arizona (f). 



29. D. camporum GREENE, Erythea, 2: 183. Nov., 1894. 

 D. albescens RYDB. Bull. Torr. Club, 26: 583. 1899. 



Roots fascicled, fleshy-fibrous : stem stout, erect, i to 3 feet 

 high, pubescent throughout, especially above : a dense cluster 

 of finely dissected root-leaves, and very few stem-leaves : ra- 

 ceme long and simple, often dense ; pedicels short, erect or ap- 

 pressed : flowers white with blue spots on sepals, and sometimes 

 tinged with blue or flesh color ; spurs straight or curved, longer 

 than the sepals ; upper petals often tinged with yellow, lower 

 ones 2-lobed, bearded : follicles pubescent, seeds scaly and often 

 winged at the angles. Widely distributed. Manitoba to Ar- 

 kansas and San Antonio, Texas, west to the Rockies (f). 



Var. Penardi n. var. 



D. Penardi HUTH, in Helios 10 : 27. 1893. 



Flowers and leaves much like the type : upper petals toothed : 

 seeds large, black, slightly scaly. Flagstaff Hill and Boulder, 

 Colo.,j^ Huth. No type of this is known in America, but 

 seeds of it have been sent to Columbia University by M. E. 

 Autran, of the Boissier Herbarium. A specimen from Esmeralda 

 Co., Neb. (W. H. Shockley, 1881), in Gray Herbarium agrees 

 in characters of seeds and leaves, but not in color of flowers. It 

 is an intermediate form between this variety and D. Geyeri (f). 



Var. macroseratilis n. var. 



D. macroseratilis RYDB. Bull. Torr. Club, 26 : 585. 1899. 



Slender, leaf-segments fewer than in the t}'pe : flowers much 

 the same. Represents the southern variation of the camporum 

 group. Tom. Greene Co., Tex. (f). 



30. D. scaposum GREENE, Bot. Gaz. 6: 156. 1881. 



Root a cluster of thickened, fleshy fibres : stem leafless as in 

 D. nudicaule; radical leaves rather fleshy, pubescent, 3-parted, 

 the divisions wedge-shaped, 3~5-cleft or toothed, the teeth end- 

 ing in a calloused point : racemes many-flowered, pedicels as 

 long as the deep azure blue flowers ; spur incurved : follicles 3 

 to 5 ; seed coat somewhat loose and wrinkled. Southern Utah 

 and Arizona (f). 



