444 MINNESOTA BOTANICAL STUDIES. 



glabrous, deeply cleft into 3 to 7 wedge-shaped lobes, which 

 are often trifid, petioles usually not dilated at the base : flowers 

 medium in size, blue with upper petals yellow, sepals nearly 

 equalling the spur in length ; flowers on long, crowded, erect, 

 pyramidal racemes : follicles 3, pubescent or smooth ; seed coats 

 irregularly wrinkled. June to August. Borders of woods. 

 Alabama and Carolina to Minnesota. 



25. D. Treleasei B. F. BUSH, n. sp. 



Roots fascicled, rather fleshy : stem green, slender but erect, 

 usually 2 to 4 feet high, simple or branched, glabrous through- 

 out, somewhat glaucous : only i or 2 true stem leaves, basal 

 leaves 2 to 5, 2 to 5 inches across, about 5-parted, and lobed 

 into narrow segments with calloused tips ; petiole of lowest stem 

 leaf dilating : inflorescence open and somewhat branching ; pedi- 

 cels long and very slender, ascending or spreading, pubescent on 

 upper part ; spurs and sepals about equal, blue, puberulent with- 

 out ; petals much shorter than sepals and very narrow ; upper 

 petals blue at the ends, lower ones blue with dense yellow beard ; 

 spur straight, sometimes 2-lobed : sepals narrowly ovate ; bractlets 

 very small and slender, usually not very close to the pubescent 

 receptacle: follicles 3, not divergent, sparsely hairy; styles 

 divergent, % the length of follicles ; stigmas 2-lobed ; seed 

 coats dark brown, loose and much wrinkled. Collected by B. 

 F. Bush (No. 73), May 28, 1898, Eagle Rock, Mo. ; (No. 81) 

 June 10, 1899, Forsyth, Mo. Common in barrens (f). 



This is perhaps most nearly related to D. Carolinianum. 

 Besides the difference in floral characters the plant is glabrous, 

 somewhat glaucous : roots fleshy, fascicled : racemes open : 

 stem leaves about 2 : follicles always 3. 



26. D. Carolinianum WALT. Fl. Carol. 155. 1788. 

 D. azureum MICHX. Fl. I : 314. 1803. 



D. virescens NUTT. Gen. 2 : 14. 1818. 

 D. azureum var. laxiflorum HUTH, Bot. Jahrb. 20 : 450. 

 1895. 



Stem i^ to 2^2 feet high, not much branched, plant some- 

 what pubescent : leaves 3~5-parted, the divisions 3~5-cleft 

 into usually linear lobes : spicate racemes slender, usually many- 

 flowered : flowers small, azure-blue ; spurs slender : 3 to 5 fol- 

 licles, oblong, erect ; seeds transversely wrinkled and rough- 



