CROWFOOT FAMILY 183 



Leaves few, the basal 2-4 cm. broad, 5-parted, the primary divisions usually cuneate, with 2 or 

 3 oblong lobes, the stem leaves reduced and with oblong, obtuse divisions; flowers 2-8, rarely 

 more in loose racemes; sepals deep violet-purple, the spur slender, curved at the apex, about 

 12 mm. long ; upper petals notched ; follicles 8-14 mm. long, nearly straight, appressed viscid- 

 puberuient; seeds rather conspicuously white-winged on the angles. 



Mountain meadows and open coniferous forests, Boreal Zones; mountains of eastern Washington, to 

 northern California east to Idaho and Nevada. Type locality: "in the shade of pine woods in the Blue 

 Mountains of the Oregon." June-Aug. 



Delphinium Sonnei Greene, Pittonia 3:246. 1896. (D pauciflorum var nevadense A. Gray Syn. Fl. 

 N Amer l 1 : SO. 1895. D. pauciflorum var. Sonnei Smiley, Univ. Calif. Pub. Bot. 9: 190. 1921.) Closely 

 related to D. depauperatum Nutt. and probably not specifically distinct, best distinguished by the more nabelli- 

 form leaves, more numerous flowers, glabrous inflorescence and follicles. Open coniferous forests and edges 

 of meadows, Boreal Zones; Sierra Nevada, California. Type locality: above and below Truckee, California. 



8. Delphinium cyanoreios Piper. Blue Mountains Larkspur. Fig. 1785. 



Delphinium cyanoreios Piper, Contr. U.S. Nat. Herb. 16: 202. 1913. 



Stems erect, arising from a thick tuber-like root, usually simple, 4-9 dm. high, puberulent or 

 glabrate below, villous-glandular above, at least the inflorescence. Leaves few, the basal usually 

 glabrous, their 3 cuneate divisions cleft into linear or linear-oblong segments, the upper smaller 

 and more deeply cleft into narrower segments; racemes spiciform, 10-20-flowered ; pedicels 

 shorter than the spurs; calyx deep blue, sparsely short-villous, the spur straight, 12-14 mm. 

 long; sepals oblong; upper petals white, tinged with blue; follicles villous-glandular, 1-2 cm. 

 long, seeds smooth on the sides, the angles with narrow white margins. 



Moist grassland, Arid Transition Zone; eastern Oregon, from the Blue Mountains to Klamath County, and 

 eastward to adjacent Idaho. Type locality: near Sled Creek Ranger Station, Wallowa County, Oregon. May- 

 July. 



9. Delphinium Nuttallii A. Gray. Nuttall's Larkspur. Fig. 1786. 



Delphinium Nuttallii A. Gray, Bot. Gaz. 12: 51, 54. 1887. 

 Delphinium columbianum Greene, Erythea 2: 193. 1894. 



Stems strict and simple, 3-7 dm. high, puberulent throughout with recurved hairs, or 

 glabrous. Leaves erect or ascending, 5-8 cm. broad, sparsely short-pubescent, S-parted, the 

 primary divisions divided to near the middle into 2 or 3 oblong, obtuse or acutish lobes. Raceme 

 simple or with 1 or 2 branches, rather strict, many-flowered; pedicels ascending, the lower 

 rarely over 3 cm. long ; sepals light to rather deep blue, oblong-oval, 10-12 mm. long, the spur 

 slender, straight, light blue, 15 mm. long; upper petals bluish, notched; lateral petals bright 

 blue ; follicles erect, only slightly divergent at the apex, 7-9 mm. long, pubescent ; seeds winged 

 on the margins. 



Low moist ground, mainly Humid Transition Zone; British Columbia to middle western Oregon. Type 

 locality: "Columbia Plains." June-July. 



Delphinium leucophaeum Greene, Erythea 3: 118. 1S95. (D. willamettense Suksdorf, Deutsch Bot. 

 Monatss 16: 210. 1898.) Apparently only a color form of D. Nuttallii A. Gray, the flowers being yellowish 

 with a slight tinge of blue in the veins or on the tips. Willamette Valley, Oregon. 



10. Delphinium strictum A. Nels. Strict Larkspur. Fig. 1787. 



Delphinium simplex Dougl. ex Hook. Fl. Bor. Amer. 1 : 25. 1829. Not. Salisb. 1796. 

 Delphinium azureum var. simplex Huth, Helios 10: 34. 1893. 

 Delphinium strictum A. Nels. Bull. Torrey Club 27 : 263. 1900. 



Stems arising from short thick tuber-like roots, simple, erect and strict, 4-9 dm. high, 

 puberulent below, viscid-pubescent above. Leaves usually many, on erect petioles, divided into 

 linear to narrowly linear lobes, puberulent ; raceme simple or rarely with one or two branches, 

 spike-like, many-flowered ; pedicels erect or nearly so, about equaling or shorter than the spurs ; 

 sepals oblong, obtuse, pale to deep blue, pubescent, the spur 12-15 mm. long, usually reflexed at 

 the apex ; follicles glandular-pubescent, 6-8 mm. long ; seeds roughened on the sides. 



Mountain meadows, Arid Transition Zone; eastern Washington and Oregon to Wyoming. Type locality: 

 "On the subalpine range west of the Rocky Mountains, near the Columbia." May-July. 



Delphinium strictum var. distichiflorum (Hook.) St. John, Fl. S.E. Wash. 153. 1937. (D. simplex 

 var distichiflorum Hook. Lond. Journ. Bot. 6: 67. 1847.) Leaves glabrous or nearly so; upper part of stem 

 and inflorescence appressed-puberulent, scarcely viscid. Habitat and range of the species, and many mtergrad- 

 ing forms occur. 



11. Delphinium oreganum Howell. Oregon Larkspur. Fig. 1788. 



Delphinium oreganum Howell, Fl. N.W. Amer. 1 : 22. 1903. 



Stems erect, simple or sparsely branched, 3-6 dm. high, puberulent with recurved hairs. 

 Leaves long-petioled, spreading, 3-7 cm. broad, pubescent, 5-parted, the primary segments nar- 

 rowly cuneate, the lobes oblong, acutish; raceme loosely 5-20-flowered, usually simple, the 

 lower pedicels often 10 cm. long; sepals deep violet-purple, 12 mm. long, puberulent without, 

 the spur straight or slightly curved, 15 mm. long; upper petals purple or tinged with purple, 

 entire; lateral petals 8-10 mm. broad, dark blue, cleft at apex with a closed sinus and rounded 

 lobes; follicles nearly straight, 8 mm. long, puberulent; seeds rugose-reticulate on the rounded 

 back, the other surfaces smooth, narrowly winged at the summit, and margined on the lateral 

 angles. 



Grassland, Humid Transition Zone; western Oregon, from the Columbia Gorge to the Willamette Valley. 

 Type locality: open plains and hillsides of the Willamette Valley. June-July. Color forms_ occur, with pinkish 

 or yellowish white flowers, probably genotypes lacking the blue pigment or the blue and pink pigments. 



