458 



Ranunculaceae 



Aquilegia 



50 



Map 941 



Aquilegia canadensis L. 



rhizomes and roots have been much used in medicine and since the plant 

 is so conspicuous I fear "root collectors" have almost exterminated it. 

 It is commonly known as black cohosh and to the eclectic physician as 

 macrotys. 



Maine, Out. to Wis., southw. to Ga. and Mo. 



2538. AQUILEGIA [Tourn.] L. 



1. Aquilegia canadensis L. American Columbine. Map 941. Local 

 throughout the state on the wooded bluffs of streams, wooded slopes and 

 banks of streams, banks and slopes of deep ravines, and rarely far removed 

 from stream courses. I have twice found it in open tamarack bogs where 

 it was associated with Rhus Vernix and Rhamnus alnifolia. I have 

 also frequently found it growing in the rocky crevices of cliffs along 

 streams. I suspected this wide difference of habitat would show some 

 difference in the structure of the plants but I find none. The plant when 

 taken from the wild and planted in the garden thrives and reproduces 

 freely from seed, which fact is not entirely consistent with its restricted 

 distribution along streams. 



N. S. to Alberta, southw. to Fla. and Tex. 



2539. DELPHINIUM L. Larkspur 



[Wilde. Studies of the genus Delphinium. Cornell Univ. Agric. Exp. Sta. 

 Bull. 519: 1-107. 1930.] 



Pistil 1; capsules densely pubescent; leaf-segments mostly less than 2 mm wide; annual. 



1. D. Ajacis. 



Pistils 3; capsules glabrous or the sutures somewhat pubescent; leaf-segments more 

 than 2 mm wide ; perennial 2. D. tricorne. 



1. Delphinium Ajacis L. Rocket Larkspur. Map 942. Somewhat 

 frequent in fallow fields and open woodland near the Ohio River in the 

 southeastern part of the state and probably very local elsewhere. Where 



