312 RANUNCULACEAE 



21. D. Geyeri Greene. Stem 2-7 dm. high, leafy mostly towards the base; 

 leaves grayish strigose; blades 5-8 cm. broad; sepals deep blue, oblong to oval, 

 1-1.5 cm. long; upper petals yellow, tinged with blue, obtuse or acutish, entire, 

 the lower deep blue, with sinuate obtuse lobes; follicles about 15 mm. long, 

 nearly straight, canescent. Dry mesas and rocky hills: Colo. Wyo. Utah. 

 Submont. My-Jl. 



22. D. cucullatum A. Nels. Stem 6-15 dm. high, finely puberulent above; 

 leaf-blades 1-2 dm. broad, finely puberulent; inflorescence narrow and dense; 

 sepals pubescent, but not glandular; upper petals yellowish, undivided; lower 

 petals blue, with obtuse sinuate lobes; follicles about 15 mm. long, villous, thick, 

 straight. (?) D. abietinum Tidest. Wet meadows: Mont. -Ida. -Utah 'Colo. 

 Submont. Mont. Jl-Au. 



23. D. canmorense Rydb. Stem more than 5 dm. high; leaf -blades 8-10 

 cm., densely puberulent; sepals acute, fully 1 cm. long, strigose outside; upper 

 petals brownish; lower petals dark blue, with lanceolate acute lobes. Rocky 

 mountains: Canmore, Alta. Mont. Jl. 



24. D. robustum Rydb. Stem leafy, often 2 m. high or more, puberulent 

 throughout, often 1 cm. in diameter at the base; leaf-blades puberulent on both 

 sides, divided to the base into 5-7, twice cleft segments; ultimate lobes linear; 

 sepals dark blue, paler at the base, all except the upper one obtuse, 12-15 mm. 

 long; upper petals narrow, light brownish; lower petals with slender claws bent 

 at right angles, bearded only within; follicles densely pubescent. Meadows: 

 Colo. N.M. Submont. Mont. Jl-Au. 



25. D. elongatum Rydb. Stem tall, slightly strigose in the inflorescence; 

 leaf-blades digitately divided into about 7 divisions, glabrous and glaucous 

 beneath; ultimate lobes lanceolate, acute; sepals and petals dark blue, the former 

 oval, about 1 cm. long; follicles erect, 12-15 mm. long, strigose-puberulent. 

 Hills and mountains: Colo. Mont. Alta. Submont. Mont. Au. 



26. D. ramosum Rydb. Stem often 2 m. high, often tinged purplish or 

 bluish; leaf -blades glabrous above, finely puberulent beneath, divided to near the 

 base into 5-7 cleft segments; ultimate lobes oblong or lanceolate; inflorescence 

 with slender branches, puberulent; sepals dark blue, slightly brownish at the 

 base, about 1 cm. long, ovate, puberulent; upper petals dirty white, tinged with 

 brown and blue, about 8 mm. long; lower petals dark blue, bearded, only slightly 

 2-lobed at the apex; follicles 12-15 mm. long, somewhat spreading and with 

 divaricate beaks. Canons: Colo. Wyo. Submont. Mont. Jl. 



27. D. Brownii Rydb. Stem about 1 m. high, glabrous and shining through- 

 out; leaf -blades palmately divided into about 5 divisions, puberulent; divisions 

 4-6 cm. long, oblanceolate in outline, cleft into lanceolate, acute, somewhat 

 spreading lobes; inflorescence a rather lax raceme; sepals dark blue or purple, 

 oblong-oval, obtuse, 10-12 mm. long; lateral petals also blue or purplish; upper 

 petals of the same color or paler, acute; follicles erect, glabrous. Meadows: 

 Sask. Mont. Alaska. Submont. Jl-Au. 



28. D. viscidum Rydb. Stem about 3 dm. high, grayish strigose below, 

 densely glandular-viscid above; leaf -blades 5-7 cm. broad, densely grayish 

 strigose; inflorescence branched; sepals dark blue, 12-15 mm. long, oblong, acute; 

 upper petals yellowish, tinged with blue, obtuse, entire; lower petals dark blue, 

 with obtuse sinuate lobes; spur 10-12 mm. long, somewhat S-curved. Plains: 

 Wyo. Plain. Jl-Au. 



29. D. multiflorum Rydb. Stem about 1 m. high or more, glabrate 

 below; leaf-blades glabrous and glaucous, pubescent only on the margins and 

 veins; segments 5-7 cm. long, cleft into lanceolate, ovate, or oblong acute lobes; 

 inflorescence long and dense, of ten branched; sepals light blue, with darker median 

 lines or blotches towards the tips, oblong-oval, obtuse, or the upper acutish, finely 

 puberulent; petals of the same color as the sepals; follicles erect. Along streams, 

 damp meadows, etc. : Wash. Ida. Colo. Submont. Mont. Jl-Au. 



30. D. occidentale S. Wats. Stem 1 m. or more high, glabrous below; leaf- 

 blades 1-1.5 dm. wide, pubescent on both sides, divided into 3-7 rhombic, twice 



