346 MINNESOTA BOTANICAL STUDIES. 



KEY TO SPECIES OF ACONITUM. 



A. Roots tuberous or napiform. 



B. Leaves deeply cut, but not to the base. 

 C. Sepals mostly some shade of blue. 



D. Axils of leaves without bulblets. 



E. Beak of helmet prominent or reflexed. 



F. End of beak reflexed Cammarum. 



FF. End of beak not reflexed, but prominent. 



G. Stem stout paniculatitm. 



GG. Stem lax K amis chat icum. 



EE. Beak of helmet either abruptly pointed or 

 turned inward not reflexed. 



F. Stem stout, erect .Japonicum. 



FF. Stem slender, sometimes showing a climb- 

 ing tendency nncinatum. 



DD. Axils of leaves with bulblets bulbiferum. 



CC. Sepals mostly white or yellow bordered with blue. 



D. Stem robust heterophyllum. 



DD. Stem slender Lycoctonum. 



BB. Leaves divided to the base. 



C. Helmet higher than wide variegatunt. 



CC. Helmet, or hood, broad and low. 



D. Follicles rarely varying from four Napellus. 



DD. Follicles three to five delphinifolium. 



AA. Roots fascicled and elongated, or fibrous. 

 B. Stems erect. 



C. Flowers yellowish Anthora. 



CC. Flowers blue to whitish autumnale. 



BB. Stems trailing reclinatum, 



A. cammarum LINN. Sp. PI. 2 ed. 751. 1762. 



A. neomontanum WILLD. Sp. PL 2: 1236. 1799. 



A. bicolor SCHULT. Obs. Bot. 101. 1809. 



A. erioslemum DC. Syst. I: 377. 1818. 



A. intermedium DC. 1. c. 374. 



A. spectosum OTTO, ex DC. Prod. 1 : 60. 1824. 



A. cernuum BAUMG. ex. Schur. Enum. PL Transs. 32. 



1866. 



REICHENBACH has given the names: atistriacum TRATT., 

 Breiterianum, decorum, exaltatum, hamatum, hortense 

 HOPPE., Ottonianum, -palmatifidum, Sprengelii RUA, 

 Storkianum, versicolor. 



Stem 3-4 feet high ; leaves with short bluntish lobes ; flowers 

 purple or blue ; panicles or loose spikes few flowered ; helmet 



