CROWFOOT FAMILY 309 



IT. Pedicels ascending or spreading. , , , , , ^ ^ 



a. Inflorescence few-flowei ed ; the lower pedicels elongate: sepals broad, spread- 

 ing, dark blue; leaf-segments narrow; root short and thickened, often 



tuber-like. (III. Bicoloria.) ^ -r. rr 77 ■ 



Upper petals as well as the lower blue; pod straight. 9. I>. Hcllen, 



Upper petals white or yellowish, only veined with blue, the lower mostly blue. 

 Follicles 1 5-2 cm. long, more or less arcuate, the upper portion divergent. 

 Roots fascicled, thick, but not tuber-like; stem usually viscid, at least 



above; blades of the lateral petals about 10 mm. long. 

 Spur fully half longer than the obtuse lateral sejials. 



10. D. Leonardi, 



Sour only slightly longer than the acute lateral sepals. 

 '^ 11. D. bicolor. 



Roots tuber-like; stem not viscid; blades of the lateral petals about 5 



mm. long. -^ -r-^ ,*■ - ■■ 



Stem with long, soft reflexed hairs. 12. D. Menztesii, 



Stem appressed-strigose or glabrous. ^ ^.r , 



Flowers dark blue. 13. D, Nelsomi. 



Flowers light blue. 14. D. dumetorum. 



Follicles less than 1 cm. long, only the tips divergent; stem strigose; root 



tuber-like, ^ ^ r^ -kt ., u- ™ 



Se'^ments of the leaves all narrow. 15. jD. Nuttalhanum, 



Segments of the basal leaves oblong to cuneate. 16. D. depauperatum, 

 b Lower pedicels not elongate; plant with a long woody taproot or a rootstock. 

 1 Segments of the basal leaves obtuse, mucronate. (IV. Scaposa.) 



Sepals light blue; lobes of the first basal leaves hnear-oblong ; spur a uttle 



longer than the upper petals. ^ ^ ^J^^^r coeh'Stinum, 



Sepals dark blue; lobes of the first basal leaves rounded to oblong; spur 



nearly twice as long as the upper petals. 

 Follicles glabrous or sparingly viscid; stem usually scapiform. 



° 18. D. scaposum. 



Follicles strigose; stem leafy. 19. -D. xylorhizum. 



2. Segments of all the leaves acute or acuminate. 



a. Plant not all viscid. 



+ FolUcles pubescent. (V. Robusta.) 

 Stem grayish strigose throughout. 



Leaves di\ided into cuneate. merely cleft, segments. 



20. D. geramfohum. 



Leaves repeatedly divided into linear lobes. 



Stem 3-5 dm. liigh; bractlets oblong, close under the calyx. 



21. D. Geyeri. 



Stem 5-20 dra. high; bractlets subulate, 2-3 mm. below the 

 calyx. 24. D. robustum. 



Stem glabrous and glaucous, at least below. 



Plant cespitose, 2-4 dm. high. 34. D. glaucescens. 



Plant not cespitose, 5-20 dm. high. 



Inflorescence dense; follicles scarcely at all arcuate. 



Leaf-segments 3-7, broad, cuneate, merely cleft into 



broadly lanceolate lobes. 



Sepals yellowish white or light blue. 



22. D. cucuUatum, 



Sepals dark blue. 23. D. canmorense. 



Leaf-segments narrow, repeatedly dissected into linear 



or linear-lanceolate divisions. 



Inflorescence paniculate, strigose-puberulent; leaf- 

 segments linear. 24. Z>. robustum. 



Inflorescence racemose, simole. glabrous or nearly so; 

 leaf-segments narrowly lanceolate. 



25. D. elongatum. 



Inflorescence lax; follicles strongly arcuate. 



26. D. ramosum. 



** Follicles glabrous. (VI. GL-WCA.) 27. Z>. Brownii. 



b Plant more or less viscid, especially the pedicels. 



'* Plant tall, 4-20 dm. high, not cespitose „. ^ , 1 * . r^jr 



Leaves dissected into linear lobes; foUicles densely strigose. (Vll. 



VisciDA.) 28. D. tiscidum. 



Leaves divided into cuneate or rhomboid, merely cleft, divisions. 

 Follicles viscid-pubescent. (VIII. Occidentaua.) 



Flowers light blue, or yellowish, tinged with blue or purple. 



29. D. multiflorum. 



Flowers dark blue. 30. D. occidentals 



FolUcles glabrous. (IX. Subalpina.) ^ . , 



Sepals obtuse. 31- D. reticulatum. 



Sepals acute or acuminate. « -r, ^ . 



Sepals at most equalling the spur. 32. D. Barheyi, 

 Sepals much longer than the spur. 33. D. attenuatum, 

 ** Plant less than 4 dm. high, cespitose. (X. Alpestria.) 



Stem 2-4 dm. high, puberulent or glabrous. 34. D. glaucescens. 

 Stem about 1 dm. high, \lscid-pubescent. 35. D. alpesire. 



Carpels and foUicles solitary; petals 2, united. (XI. Consoltdae.) _ . . . 



3o, ^y. JxJClCtS^ 



