22 RANUNCULACE^E. AQUILEGIA. 



DELPHINIUM. 



shady ravines, southern Oregon near Crater Lake, Gorman, and California. 



A. flavescens Watson Bot. King, 10. Smooth: stems 1-3 feet high: 

 leaves ternate: leaflets round-cordate, 3-parted, the segments 2-3-cleft and 

 coarsely toothed: flowers yellow, pendulous; sepals reflexed, oblong-ovate, 

 acute, longer than the spurs : style nearly equaling the stamens, much lon- 

 ger than the pubescent ovary. Subalpine, eastern Oregon to Nevada, Utah 

 and Brit. Columbia. 



A. leptosera Nutt. Journ. Acad. Philad. vii, 9. Stems 1-2 feet high, 

 glabrous, few-flowered: floAvers white or slightly tinged with blue, soon becom- 

 ing erect: sepals ovate, an inch to inch and a half long; spur straight, 2 inches 

 long, very slender: Shaded mountain slopes, Idaho to eastern California and 

 Utah, 



* * Flowers irregular. Carpels 1-5. Leaves palmately lobed or 

 dissected. 



11 DELPHINIUM Tourn. Inst. 426. L. Gen. n. 781. 



Erect herbs from grumous or fleshy-fibrous roots, with palmate- 

 ly lobed cleft or divided alternate leaves and showy flowers in 

 simple or paniculate racemes. Sepals 5, very irregular, usually 

 colored and petaloid, the upper one produced backwards at the 

 base into a hollow spur the others plain. Petals 2-4, very irreg- 

 ular, the 2 upper ones developed backwards and enclosed in the 

 spur of the calyx. Stamens many. Pistils 1-5, many-ovuled. 

 Style persistent. Ours all of 



DELPHINASTRUM DC. Syst. i, 351 , Petals 4. distinct, the up- 

 per pair usually glabrous : the lateral ones unguiculate, more or 

 less hairy on the face, in ours emarginate or 2-lobed at the apex. 

 Follicles in ours usually. 3. 



* Flowers blue or white, never scarlet nor orange. 



D. Menziesii DC. Syst. i, 355. Glabrous or pubescent with spreading 

 hairs; 5 to 18 inches high, sparingly leafy: lower leave srouncl-reniform, irreg- 

 ularly cut into oblong lobes: the upper finely dissected into linear lobes: flowers 

 blue, in a few-branched panicle: sepals lanceolate, obtuse, 5-8 lines long by 

 2-3 lines wide, about as long as the stout spur, pubescent with spreading hairs: 

 petals exserted, white with purple veins: follicles glabrous, 8-10 lines long 

 with acute widely spreading tips: seeds turbinate, with a broad depressed sumT- 

 mit. Northern California to Brit. Columbia: usually in open woods. 



D. pauperculum Greene Pitt, i, 284. Stem solitary, simple, 2-7-leaved. 

 6-10 inches high ; from a small globose or ovate tuber : pubescence sparse 

 and soft : leaves parted into broad-linear, trifid segments : flowers only 3 or 

 4 on ascending pedicels, deep blue, an inch broad ; spur straight, ascending. 

 Near the coast, Washington. M. A. Knapp. 



D. Oreganum. Finely pubescent with short reflexed hairs : stem often 

 slender, 1-3 feet high, from a somewhat branched flattish tuber, sparingly 

 leafy : leaves all dissected into acute linear lobes : flowers blue, in few to 

 many-flowered racemes ; sepals broadly lanceolate, half inch or more long, 

 snorter than the slender spur; lower petals blue, very obtuse or truncate, 

 repand and ciliate at the apex, the blade only 2-3 lines long; upper ones 

 light blue bordered with white, lanceolate, obtuse : follicles 3-4 lines long 

 by a line broad, densely tomentose, erect and not at all spreading at the 

 tips: seed triangular, with rounded and rugose back, and truncate summit. 

 Open plains and hillsides of the Willamette valley. 



