CROWFOOT FAMILY 311 



divisions; sepals ovate-lanceolate, acute or acuminate, about 15 mm. long; upper 

 petals pale brownish yellow, with blue veins, usually uncleft; lower petals with 

 obtuse wavy lobes; follicles from densely viscid-pubescent to glabrous, 1.5-2 cm. 

 long. Dry ground in the mountains: Wash. -Sask. Wyo. Utah Ore. Plain 

 -Mont. Ap-Jl. 



12. D. Menziesii DC. Closely resembling the preceding, but more or less 

 long-hairy throughout; stem 2-5 dm. high; divisions of the basal leaves shorter 

 and broader and often acutish; lower petals scarcely longer than the upper; 

 blades rounded and only slightly cleft; follicles glabrous or pubescent, arcuate. 

 On hills: B.C. Ida. Calif. Son. Submont. Ap-Je. 



13. D. Nelsonii Greene. Closely resembling D. bicolor in habit, but 

 usually more slender; stem 2-5 dm. high, finely strigose-puberulent; leaf -blades 

 dissected into linear obtuse divisions; sepals oblong or oval, usually obtuse; 

 petals as those of D. bicolor but shorter; follicles about 15 mm. long, strigose or 

 glabrous. D. pinetorum Tidest. Hills and grassy slopes : N.M. Neb. Alta. 

 Wash. 'Mont. Utah. Submont. Mont. 



14. D. dumetorum Greene. Stem 4-6 dm. high, glabrous or slightly 

 pubescent above, few-leaved; leaf-blades glabrous, 5 cm. broad, 5-divided to the 

 base, the divisions again cleft into broadly linear lobes; sepals pale lavender, 

 blue, or white tinged with blue, oblong or oval, obtuse, about 12 mm. long; 

 petals white tinged with yellow; follicles puberulent, more or less spreading. 

 Dry hills: Colo. Submont. Je.. 



16. D. Nuttallianum Pritzel. Resembling D. Nelsonii, but more slender; 

 stem strigose-puberulent or glabrous, 2-4 dm. high; leaf -blades about 3 cm. wide, 

 strigose or glabrate, dissected into narrowly linear lobes; sepals oblong, 8-10 mm. 

 long, obtuse; upper petals whitish, obtuse and merely notched; lower petals 

 with obtuse lobes; follicles 7-8 mm. long, glabrous. D. pauciflorum Nutt. Dry 

 places in the mountains: Wash. Mont. Wyo. Utah -Ore. Submont. 

 Subalp. My-Au. 



16. D. depauperatum Nutt. Stem about 3 dm. high, viscid-puberulent, 

 rather simple; basal leaf -blades orbicular in outline, 1-4 cm. broad, 5-cleft; divi- 

 sions usually cuneate, with 2 or 3 oblong lobes; stem-leaves reduced and with 

 narrower divisions, oblong, obtuse; upper petals notched; follicles nearly straight, 

 6-7 mm. long, viscid. Poor soil: Ore. Ida. Calif. Son. Je-Jl. 



17. D. coelestinum Rydb. Stem 4-5 dm. high, glabrous or slightly pubes- 

 cent above, leafy; leaves long-petioled ; blades about 3 cm. broad, sparingly 

 pubescent, divided to the base into 3-5 narrowly cuneate divisions, these again 

 cleft into linear-oblong lobes; sepals oblong, obtusish, about 1 cm. long; upper 

 petals yellowish white; lower petals light blue, with obtusish wavy lobes; follicles 

 8-10 mm. long, slightly puberulent, nearly straight. Arid regions: s Utah 

 Ariz. L. Son. My. 



18. D. scaposum Greene. Stem 2-5 dm. high; leaves basal, fleshy, petioled; 

 blades of the earliest reniform in outline, about 3 cm. broad, 3-cleft and the 

 divisions round-lpbed, those of the later leaves more deeply cleft; sepals dark 

 blue, ovate, acutish, 10-12 mm. long; upper petals yellowish, tinged with blue; 

 lower petals dark blue, with sinuate obtuse lobes; follicles glabrous or sparingly 

 viscid. Dry ground: N.M. s Colo. s Utah -Ariz. Son. Ap-Je. 



19. D. xylorhizum Rydb. Stem not scapose, 2-3 dm. high, glabrous; leaf- 

 blades of the basal leaves fleshy, divided into 3 broadly cuneate, cleft and lobed 

 divisions; stem-leaves with linear-oblong lobes; sepals dark blue, oval, obtuse, 

 pubescent outside; upper petals yellowish, with very obtuse lobes; lower petals 

 blue, with sinuate, obtuse lobes. Dry clayey hills: Lima, Mont. Submont. 

 Je-Jl. 



20. D. geraniifolium Rydb. Stem stout, 3-4 dm. high, leafy; leaves 

 grayish strigose; blades 4-6 cm. broad, mostly 5-divided to the base; ultimate 

 lobes oblong or lanceolate, acute; sepals dark blue, oval, acute; upper petals 

 yellowish, tipped with blue, acute, scarcely cleft; lower petals with acute lobes; 

 follicles strigose. Dry hills: Ariz. Colo. Submont. Au. 



