CROWFOOT FAMILY 181 



Flowers yellow, sometimes tinged with rose or purple. 5. D. luteum. 



Flowers blue or purple, or in some color forms pale pink or white. 



Roots grumose-tuberiform, readily separating in age from the attenuated base of the stem. 



Seeds smooth on the surfaces of the sides, more or less conspicuously winged at the summit and 

 sometimes on the lateral angles. 

 Racemes loosely few-flowered (rarely over 8). 



Follicles 15-20 mm. long, often arcuate-diverging; seeds with incurved wings at the 

 summit, the lateral angles not winged or only slightly so above. ... 



6. D. Menztesxt. 



Follicles 8-14 mm. long, only the tips diverging; seeds conspicuously white-winged on 

 the lateral angles as well as the summit. 7. D. depauperatum. 



Racemes rather strict with ascending pedicels, and more or less densely flowered, the flowers 

 ranging from 7-20, rarely less than 8. 



Leaves glabrous; inflorescence viscid-pubescent with spreading hairs. 



8. D. cynoreios. 



Leaves pubescent; inflorescence puberulent and somewhat viscid with very short up- 

 wardly curved appressed hairs. 9. D. Nuttallii. 

 Seeds more or less roughened on the surfaces, merely margined at the summit and on the lateral 

 angles. 

 Flowers in a strict densely flowered raceme; pedicels equaling or shorter than the spur. 



10. D. strictum. 



Flowers in a loosely flowered raceme; pedicels spreading, the lower much exceeding the spur. 

 Seeds reticulate-rugose on the rounded back. 11. D. oreganum. 



Seeds conspicuously tuberculate or sinuous-scaly. 12. D. decorum. 



Roots elongated, simple or usually fasciculate, stout and woody or rarely somewhat fusiform, but 

 never tuberiform; stems not attenuate at base. 

 Seeds scaly-roughened. 



Leaves cuneate, glabrous, mostly deeply-lobed, the lobes entire or broader and toothed. 



13. D. uliginosum. 



Leaves not cuneate, pubescent, S-parted, the segments narrowly lobed. 



14. C. Hansenii. 



Seeds not scaly-roughened. 



Racemes lax, the lower pedicels elongated and spreading. 



Plants 2-4 dm. high; leaves thickish, 2.5-5 cm. broad. 15. D. bicolor. 



Plants tall, mostly 8-25 dm. high, often reclining below; leaves thinnish, the larger 

 10-15 cm. broad. 16. D. trolliifolium. 



Racemes strict; pedicels erect or ascending, the lower but little exceeding the spurs, or 

 rarely with one or two more elongated and leaf-bearing. 

 Plants tall, 8-25 dm. high, leafy; racemes usually elongated, often branched at the base. 



Sepals violet-purple, spreading or recurved, 10-15 mm. long. 



17. D. scopulorum glaucum. 



Sepals greenish, often tinged with purple, erect, 6-8 mm. long. 



Upper part of stem and inflorescence sparsely short-villous. 



18. D. californicum. 



Upper part of stem and inflorescence densely viscid-pubescent, with spreading 

 yellowish hairs. 19. D. viridescens. 



Plants 3-6 dm. high or rarely taller; leaves mainly basal. 



Stems glaucous and glabrous or rarely very sparingly pubescent. 



Follicles glabrous; seeds irregularly angled and narrowly wing-margined on the 

 angles. 20. D. Andersonii. 



Follicles puberulent; seeds completely surrounded by a loose white cellular 

 coat, not winged. 21. D. Parishii. 



Stems more or less densely puberulent or pubescent, not glaucous; seeds irregularly 

 angled, more or less winged on the angles. 

 Seeds conspicuously winged on the angles. 



Follicles glabrous. 22. D. cuyamacae. 



Follicles puberulent. 



Root-branches fasciculate and somewhat fusiform; flowers pale violet 

 to lavender or white. 23. D. hesperium. 



Root-branches not at all fusiform, usually elongated and more or less 

 woody; flowers bright violet-purple. 24. D. Parryi. 



Seeds narrowly winged or merely margined; sepals usually deep violet-purple, 

 often 2 cm. long. 25. D. variegatum. 



1. Delphinium Ajacis L. Rocket Larkspur. Fig. 1778. 



Delphinium Ajacis L. Sp. PI. 531. 1753. 



Annual, finely pubescent, the stems branched, 2-4 dm. high. Leaves dissected into many 

 narrowly linear segments, the lower petioled, the upper sessile or nearly so; flowers in simple or 

 compound racemes, blue varying to pink or white, spur slender, about 2 cm. long ; pistil 1 ; 

 follicle pubescent. 



Sparingly naturalized in the Pacific States. Native of Europe. May-Aug. 



2. Delphinium cardinale Hook. Scarlet Larkspur. Fig. 1779. 



Delphinium cardinale Hook. Bot. Mag. 11: pi. 4887. 1855. 

 Delphinium coccineum Torr. Pacif. R. Rep. 4: 52. 1857. 

 Delphinium flammeum Kell. Proc. Calif. Acad. 2: 22. 1863. 



Plants with stout fascicled roots and hollow stems, 8-15 dm. high, branching above, 

 puberulent throughout. Lower leaves 8-24 cm. broad, deeply parted into narrowly linear or 



