Da-vis : DELPHINIUMS OF NORTH AMERICA. 451 



40. D. distichum GEYER, in Hook. London Journ. Bot. 6 : 

 68. 1847. 



D. simplex var. distichiflornm HOOK. 1. c. 67. 



D. azurcum TORR. Bot. Wilkes Exped. 217. 1854. 



Not so tall as D. simplex, glabrous or inflorescence pube- 

 rulent : leaves rather thicker : flowers and fruit much like those 

 of D. simplex; upper petals whitish. Low prairies of eastern 

 Oregon and Washington, eastward in Montana (f). 



Without seeing the follicle and seeds of D. Burkei GREENE, 

 Krythea, 2: 183, 1894, it is best not to consider it as distinct 

 from D. distichum. The type specimen is at Kew. Thus far 

 no preserved specimens showing follicles and seeds were found. 

 The type is supposed to have come from the " Snake Country, 

 probably in Idaho," but collectors in that region have been un- 

 able to rediscover the plant. 



41. D. simplex DOUGL. ex Hook. Fl. 1 : 25. 1829. 



D. azureum var. simplex HUTH, Delph. N. Am. 9. 1892. 



Stem nearly simple, 2 to 3 feet high, soft-pubescent through- 

 out : leaves many-parted into linear divisions and lobes : 

 racemes dense, little branched : flowers pale blue with upper 

 petals yellow, lower petals white-bearded ; sepals equalling the 

 spur: follicles 3, pubescent; seeds dark with margins white- 

 winged. June. Mountains of Idaho and Oregon. 



42. D. formosum Boiss. & HUET, Diagn. Sec. II, 5: 13. 



1856. 

 D. speciosum Boiss. & HUET ex Huth, Bot. Jahrb. 20 : 



410. 1885. Not. M. Bieb. 



Stem strong, 2 to 3 feet high, hairy below, rather glabrous 

 above : lower leaves 5~7-parted, long-petioled, upper ones 3-5- 

 parted, short-petioled or sessile, all alternate : racemes many- 

 flowered : flowers blue with indigo margins ; spur long, violet 

 colored, bifid at the tips : follicles 3, pubescent; seeds scaly. 

 June to July. Asia Minor, perhaps ; but its origin is disputed. 

 Flor. des Serr. 12 : 1185. 



43. D. Maackianum REGEL, in Mem. Acad. Petersb. VII, 

 4: 9. 1861. 



Erect, 3 feet high, pubescent or glabrous, branched above : 

 leaves pubescent on both sides, base often truncate or reniform, 

 3-5-parted, the parts serrate; the bases of petioles dilated: 



