342 MINNESOTA BOTANICAL STUDIES. 



petioled : flowers pale yellow, sepals lanceolate, broadly spread- 

 ing, an inch or more, the spatulate petals a little shorter, about 

 equalling the head of stamens ; spur 4 inches long or more, al- 

 ways hanging, orifice narrow. Distinguished from A. chrysan- 

 tha by longer spur with contracted orifice, by the narrow petals, 

 and by the late season of flowering. Late July to October ist. 

 Ravines southwest Texas, into Mexico. The seed must be ob- 

 tained from the wild plants, as those cultivated usually fail to 

 produce seed; hence not much used. Garden & Forest i : 31. 



A. caerulea JAMES, Long Exped. Rocky Mts. 2: 15. 1826. 

 A. Zeptocera NUTT. in Journ. Acad. Phila. 7: 9. 1834. 

 A. macrantha HOOK. & ARN. Bot. Beech. Voy. 317, t. 72. 

 1841. 



Stem i^ feet high, finely pubescent above, bearing several 

 flowers : lower stem-leaves large and biternate ; basal leaves 

 with long 3-branched petioles ; leaflets 3-lobed on secondary 

 stalks : flowers 2 inches across, whitish, but variously tinted 

 with light blue and yellow ; sepals often blue, oblong, obtuse, 

 twice as long as the petal-limbs : spurs long, slender, knobbed 

 at the end, rather straight but curving outward : head of stamens 

 equalling the petals : follicles pubescent, i inch long ; style % 

 inch. April-July. Lower mountain regions, Montana to New 

 Mexico. Introduced 1891. Bot. Mag. 4407. Garden 16 : 

 198. Meehan's Mo. 6 : 61. Vicks' i: 33, f. 4.'. Bot. Mag. 

 5477 (as var. ochroleuca). Flor. des Serr. 5 : 531. 



Var. albiflora GRAY Syn. Fl. i : i : 44. 1895. 



Flowers of the same size but sepals as w r ell as petals almost 

 white. Introduced as var. alba HORT. 1883. 



Var. alpina A. NELSON Wyom. Exp. Sta. Bull. 28 : 78. 

 1895-6. 



Plant smaller than the type ; upper leaflets entire ; flowers 

 smaller, yellow, spurs rather short. 



Var. calcarea JONES Proc. Calif. Acad. Sci. II. 5 : 619. 

 1895. 



Plant glandular-pubescent : leaves and leaflets reduced, firm ; 

 flowers much smaller than the type ; sepals blue-purple ; petals 

 reddish. Cannonville, Utah. 



Var. hybrida HORT. Sepals some shade of blue or pink or 

 mixed, and petals nearly white or yellow. The true form of 

 this is probably A. ccerulea X A. chrysantha. Revue Hort. 

 1896: 108. Am. Gard. 15: 315. 



