Davis ; DELPHINIUMS OF NORTH AMERICA. 451 
40. D. distichum Geyer, in Hook. London Journ. Bot. 6: 
65, %5947: 
D. simplex var. distichiflorum Hook. 1. c. 67. 
D. azureum Torr. Bot. Wilkes Exped. 217. 1854. 
Not so tall as D. semplex, 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. Burkez GREENE, 
Erythea, 2: 183, 1894, it is best not to consider it as distinct 
from D. distichum. 'The type specimenis 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 Doue.. ex Hook. Fl. 1: 25. 1829. 
D. azureum var. simplex Hutu, Delph. N. Am. g. 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. & HuEer ex Huth, Bot. Jahrb. 20: 
Bion Loos.) Not. NE. 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. 
Mier. des Serr. 12: 1185. 
43. D. Maackianum ReEGceEL, in Mem. Acad. Petersb. VII, 
weg. 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: 
