262 Nelson : New Plants from Wyoming 



It seems very doubtful if any true D. occidentale Wats. Bot. 

 Calif. 2 : 428, comes within our range. Though it belongs in the 

 interior, it is of the more western mountains rather than of the 

 Rockies. Its limits seem to be well stated by Howell (Fl. N. W. 

 Am. 1 : 24). The dense stiff glandular pubescence mentioned 

 by Watson, the spatulate sepals mentioned by Howell, and the 

 usually glabrous ovaries and spongy seeds are some of the points 

 that distinguish it. The variety now proposed is described in de- 

 tail since the descriptions of D. occidentale are most of them very 

 brief and as a species it is not well known. It is probable that many 

 of the Rocky Mountain plants labelled D. occidentale, D. scopn- 

 forum, D. scopulornm glancam* etc., belong to this variety. 

 The type number is 6629, Bridge Bay, Yellowstone Park, Aug. 

 2 3> 1899. It was very abundant. Other collections are no. 

 6936, Dunraven Peak, 1899; no. 874, Union Pass, 1894. 



/ 



Delphinium cucullatum 



Stems numerous, from thick and semi-woody roots, 10-15 

 dm. high, striate, glaucous below and glabrous nearly to the in- 

 florescence, rather leafy : leaves all finely pubescent, the upper- 

 most densely so, orbicular in outline, 10-20 cm. in diameter, 3-7- 

 divided, the divisions cuneate and very irregularly cleft and gashed 

 at the apex : inflorescence dense, paniculately branched below, 

 very closely and somewhat cinereously pubescent on rachis and 

 pedicels : sepals yellowish-white or tinged with blue, finely but 

 densely pubescent (no glandular pubescence on the plant), the four 

 nearly alike, oblong-elliptic, about 1 cm. long, the spur 12-14 mm. 

 long, all distinctly hooded in bud and in recently opened flowers, 

 the crown of the hood brownish : petals a bright blue, the lower 

 pair about 9 mm. long ; the blade nearly at right angles to the 

 claw, cleft to near the middle, the two lobes usually obscurely 

 toothed ; the claw with a conspicuous saccate gland or nectary at 

 the base : ovaries densely white pubescent. 



This species must represent in part the D. occidentale of the 



Rocky Mountains. In fact, Dr. Rydberg assures me that it is very 



similar to Dr. Watson's no. 38, which was included in the original 



description but later called D. scopulonun glaucam by Dr. Gray. 



It is also the same as Mr. Flodman's no. 455 from Montana. It 



* D. glancum Wats. Bot. Calif. 2 : 427 belongs exclusively to the mountain 

 ranges of the far West. 



