336 MINNESOTA BOTANICAL STUDIES. 



Var. nana HORT. Plant i foot high or less ; flowers like the 

 type. 



A. viridiflora PALLAS in Act. Petrop. 260, t. 2. 1779. 



Stem i-i}4 feet high, finely pubescent throughout, several 

 flowered : the partial petioles of root-leaves 1-2 inches long ; 

 leaflets sessile or the end one shortly stalked, lobes rather nar- 

 row and deep ; lower stem-leaves petioled, biternate : sepals 

 oblong, obtuse, ascending, greenish, equalling the broad, green- 

 ish petal-limb, but not reaching the head of stamens ; spur 

 straight, slender, y 2 inch long, not knobbed ; pubescent follicles 

 as short as their styles. Summer. East Siberia. Not so much 

 used as the following variety. 



Var. atropurpurea n. var. 



A. atropurpurea WILLD. Enum. Hort. Berol. 577. 1813. 

 A. dahurica PATR. in Deless. Ic. Sel. t. 49. 1820. 



Limbs of the petals deep blue or lilac-purple, and the sepals 

 and spur somewhat tinged with the same hue. Bot. Reg. 922. 



A. Buergeriana SIEB. & Zucc. in Abh. Akad. Munch. 4 : II, 

 183. 1846. 



A. atropurpurea MIQUEL. Ann. Mus. Lugd. Bot. 3: 8. 



1867. 



One foot high, finely pubescent towards the top ; branched 

 to form several heads, bearing 2-3 petioled, biternate leaves ; 

 partial-petioles of basal leaves ^-i inch long, 3 sessile divi- 

 sions ; flowers yellow tinted with purple, i-i y 2 inch in diam- 

 eter ; sepals ^ inch long, acute, spreading ; spurs erect, nearly 

 straight, as long as the limb of petal, and about equalling the 

 sepal ; head of stamens equal to limb in length : follicles pubes- 

 cent, ^ inch long, style half as long. Early. Japan. 

 Brought from St. Petersburg, 1892. 



A. micrantha EASTWOOD, Proc. Cal. Acad. Sci. II, 4: 



559. /. i 9 . 1894. 



Stem slender, densely glandular-pubescent and viscid on up- 

 per parts : leaflets small, cuneate, 3-cleft, with 2-3-lobed seg- 

 ments ; partial-petioles of the lateral leaflets short : flowers 

 hardly i inch across, yellowish white ; sepals nearly ^ inch 

 long, nearly half as broad : petals rather truncate, spur short, 

 straight, or slightly curved. July. Canons of southeast Utah 

 to Colorado (f). 



Var. ecalcarata n. var. 



