276 Rydberg: Studies on the Rocky Mountain Flora 



Arizona: Ft. Huachuca, 1892, T. E. Wilcox ; Rincou Moun- 

 tains, 1 89 1, Neally, 119 ; Flagstaff, 1894,/. IV. Toumcy. 



. Colorado: La Plata Mountains, 1896, E Tweedy, 426; 

 Wahatoya Creek, 1900, Rydberg & Vreeland, 6274; Pagosa 

 Peak, 1899, C. F. Baker, jog. 



^/ 



Delphinium ramosum sp. nov. 



A tall perennial, often 2 m. high. Stem glabrous and shining 

 up to the inflorescence, often tinged purplish or bluish : petioles 

 1—1,5 dm. l° n S 5 leaf-blade glabrous above, finely puberulent be- 

 neath, divided near the base into 5-7 segments, which are 4-7 cm. 

 long, oblanceolate or obovate, cuneate in outline, unequally 3 -cleft 

 and these segments again cleft into oblong or lanceolate lobes 3-6 

 mm. broad : inflorescence with slender branches, these sparingly 

 and finely puberulent: bracts linear-subulate, 5- 10 mm. long: 

 pedicels slender, 1-3 cm. long: bractlets filiform, 2-5 mm. long, 

 inserted 2—5 mm. below the calyx : sepals dark blue, striately 

 nerved, slightly brownish at the base, about 1 cm. long, ovate ; the 

 upper and lower ones acute ; the lateral ones obtuse, all puberulent : 

 spur about 1 cm. long, straight, or slightly curved at the apex : 

 upper petals dirty -white, tinged with brown and blue, about 8 mm. 

 long : spur slender, almost 1 cm. long : lateral petals dark blue, 

 bearded, with a slender claw, somewhat corniculate, bent at right 

 angles and only slightly 2-lobed at the apex: follicles 3, 12-15 

 mm. long, somewhat spreading and with divaricate beaks. 



This species has without doubt been included in D. scopulorum^ 

 but is evidently distinct from the type of that species. It is taller, 

 with more branched inflorescence, glabrous stem and the flowers 

 are usually tinged with brown at the base. The type of D. scopu- 

 lorum has narrow, very acute and divergent lobes of the leaves 

 and the calyx is purely dark blue. D. ramosum grows at an alti- 

 tude of 2000—3000 m. 



Colorado : North Cheyenne Canon, 1896, E. A. Bessey (type) ; 

 also in Williams Canon, Artists Glen and other places near Pikes 

 Peak; " Colorado/' 1889, Alice Eastwood. 



\j 



Delphinium robustum sp. nov. 



A tall and stout perennial, often 2 m. high or more. Stem 

 leafy, striate, puberulent throughout, often 1 cm. in diameter at 

 the base; petioles 1-2 dm. long, puberulent; leaf-blade finely and 



