Nelson : New Plants from Wyoming 263 



need never be confused with D. occidentale nor its variety, nor with 

 the recently described D. glaucescens Rydb., Mem. N. Y. Bot. 

 Gard. I : 155. From all of these its fine, glandless pubescence, 

 its dense inflorescence and especially the remarkable nectaries at the 

 base of the lower petals distinguish it. The type is no. 6937, 

 from the wet bottom lands, Snake River, near the southern 

 boundary of Yellowstone Park, August 12, 1899. 



4 Delphinium subalpinum (Gray) 



Perennial from deep-set, woody roots, growing in large beds, 

 — not merely several stems from each root but the plants aggrega- 



ted in beds often several feet across — 6—10 dm. high : stems sim- 

 ple, striate, pubescent for most of their length with a yellowish or 

 tawny pubescence, more densely so upward and in the inflores- 

 cence becoming slightly viscid (not glandular) : leaves large, subor- 

 bicular, deeply cleft into about 5 lobes, rarely divided nearly to 

 the base, the segments variously incised and gash-toothed, nearly 

 glabrous on the blade but minutely pubescent on the petiole and 

 the base of the leaf, especially on the lower face : raceme simple, 

 short, usually only about 1 dm. long, the pedicels longer than the 

 rather long spur : flowers a very deep blue, the spur 1 5—20 mm. 

 long, the other sepals narrowly oblong, about 15 mm. long, sub- 

 acute ; the lower petals with a narrow claw, about 10 mm. long, 

 the blade oval, deeply notched and more or less dentate on both 

 lobes : ovaries glabrous, blue but not so deeply so as the sepals 

 and petals. 



Only a few specimens of this are at hand yet I am satisfied 

 that it is the D. scopitlorum subalpinum Gray, Syn. Fl. I : 47 and 

 Bot. Gaz. 12 : 52 but not the D. occidentale Wats. Bot. Calif. 2 : 

 428, though Gray cites the latter as a synonym. The habit of 

 growth, the ample leaves, the deep uniform color of the flowers, 

 the short raceme and the short spreading fulvous pubescence 

 make it easily recognizable among all the other forms. It is, too, 

 really subalpine, so far as known to me, occurring only in open 

 grassy parks near the limit of trees. Collected twice in the Medi- 

 cine Bow Mountains (La Plata Mines) and distributed under nos. 

 1 76 1 and 5081, the latter by Elias Nelson. 



^ Delphinium strictum 



A strict perennial, 3-4 dm. high, from a small fascicle (some- 

 times but 1) of semi-woody, tuberous or cormose roots bearing 



