346 minnesota botanical studies. 



Key to Species of Aconitum. 



A. Roots tuberous or napifonn. 



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 Camtiiaruvi. 



FF. End of beak not reflexed, but prominent. 



G. Stem stout pa7iicidat7(}n. 



GG. Stem lax Kamtschaticu7n. 



EE. Beak of helmet either abruptly pointed or 

 turned inward — not reflexed. 



F. Stem stout, erect .Japonictctn. 



FF. Stem slender, sometimes showing a climb- 

 ing tendency 7incinatuvi. 



DD. Axils of leaves with bulblets bulbiferum. 



CC. Sepals mostly white or yellow bordered with blue. 



D. Stem robust heterophyllum. 



DD. Stem slender Lycoctonutn. 



BB. Leaves divided to the base. 



C. Helmet higher than wide variegatum. 



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 reclinatu7n. 



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



A. neomontamim^\Y.\Ay. Sp. PI. 2: 1236. 1799. 



A. bicolor Scu.u'LT. Obs. Bot. loi. 1809. 



A. eriostemuni DC. Syst. i: 377. 1818. 



A. interniediiini DC. 1. c. 374. 



A. speciosum Otto, ex DC. Prod, i : 60. 1824. 



A. cernimm Baumg. ex. Schur. Enum. PI. Transs. 32. 



1866. 



Reichenbach has given the names: auslrt'acmn Tratt., 



Breitcrianutn^ decorufu, exallaitmi, hamatum, hortense 



HoppE., Oitont'anum, ■palmatifidum, Sprengelii Rua, 



Storkiaiium, versicolor. 



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



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



