RANUNCULACEAE 433 



2. Aquilegia coccinea Small. Foliage light green. Stems solitary or tufted, 3-8 

 dm. tall, erect or ascending, usually branching above, commonly sparingly pubescent about 

 the nodes : leaves larger than those of A. Canadensis, otherwise quite similar ; leaflets sub- 



k>ng7 rather abruptly narrowed below the middle, the lamina yellow : styles not twice as 

 long' as the ovary : follicles straight, fully 2 cm. long, each tipped with the erect style 

 which is much shorter than the body. 



On cliffs and in rocky woods, western Virginia to Nebraska and Alabama. Spring. 



3. Aquilegia australia Small. Foliage pale green. Stems erect, usually solitary, 3-9 

 dm. tall, branching above, finely pubescent, or glabrate in parts : leaves with slender 

 petioles, except on the upper part of the stem ; blades twice ternate ; leaflets thin, reniform, 

 suborbicular or orbicular-obovate, 1-2 cm. long, glaucescent, especially beneath, crenately 

 toothed or lobed, rounded or subcordate at the base : sepals erect, lanceolate or oblong- 

 lanceolate, acuminate, 16 mm. long or less, scarlet: corolla mainly scarlet: spurs 3-3.5 

 cm. long, rather abruptly narrowed below the middle: styles more than twice as long as 

 the ovary : follicles about 1.5 cm. long, the body about as long as the bristle-like style. 



On limestone cliffs and bluffs, Florida and Texas. Spring. 



10. DELPHI'NIUM L. 



Annual or perennial herbs, with erect often branching stems. Leaves mostly cauline : 

 blades palmately lobed or divided. Flowers in racemes or panicles, showy. Sepals 5, the 

 posterior one prolonged into a spur. Petal* 2 or 4, small, the two posterior ones spurred, 

 the lateral, when present, inconspicuous. Carpels few, sessile, many-ovuled, forming fol- 

 licles at maturity. 



Plants annual : carpel 1 : petals 2, united. 



Follicles glabrous. 1- D. Consolidci. 



Follicles pubescent. 2. D. Ajacii. 



Plants perennial : carpels 3 : petals 4. distinct. 

 Follicles erect : racemes elongated. 



Leaf-segments narrow, the ultimate divisions linear or narrowly oblong. 

 Bracelets some distance below the calyx. 



Spur about twice as long as the petals : sepals obovate. 3. D. albescens. 



Spur thrice as long as the petals : sepals oblong. 4. D. macroceratilis. 



Bractlets close under the calyx on the thickened end of the pedicel. 



Sepals greenish or yellowish white : segments of the upper leaves oblong. 5. D. mrescens. 

 Sepals blue or bluish : segments of the upper leaves narrowly linear. 



Seeds strongly wing-margined, slightly rugose-squamellate. 6. D. Carolinianum, 



Seeds not wing-margined, strongly squamellate. 7. D. vimineum. 



Leaf-segments relatively broad, the ultimate divisions lanceolate. 8. D. urceolatum. 



Follicles widely spreading': racemes short. 9. D. tricorne. 



1. Delphinium Conptflida L. Plant glabrous, or romewhat pubescent. Stems erect, 

 3-8 dm. high, divaricately branched : leaf-blades short-petioled or sessile, all divided 

 into narrowly linear cleft oV toothed segments : racemes terminal, rather loose, 15-30 cm. 

 long: flowers short-pedicelled, blue or white, 2.5-3.5 cm. long: spur slender, bent near 

 the middle : petals 2, united : follicles erect, glabrous, 8-10 mm. long, each tipped with a 

 short slender beak. 



In waste places, New Jersey and Pennsylvania to Florida. Naturalized from Europe. Locally 

 adventive or fugitive further northward. Summer. FIELD LARKSPUR. KKIOHT'S-SPUR. LARK-HEEL. 



2. Delphinium Ajacis L. Similar to D. Consolida, but usually taller, commonly 

 5-12 dm. high. Leaves with shorter and more diverging segments : racemes longer, 

 mostly 2 4 dm. long, more densely flowered : follicles 12-15 mm. long, pubescent, each 

 with a short stout beak. 



In waste places, escaped from gardens mainly in the Atlantic States. Naturalized from Europe. 

 Summer. GARDEN LARKSPUR. 



3. Delphinium albescens Rydb. Plant finely pubescent, at least above, and some 

 what viscid, the roots woody. Stems 3-15 dm. high : leaves variable ; blades 5-15 dm. 

 broad, repeatedly divided into linear segments or those of the lower leaves oblong : ra- 

 cemes simple, often becoming. 5-6 dm. long : pedicels 1-2 cm. long, erect : bractlets 2-4 

 mm. below the calyx or at maturity 68 mm. below it : sepals white or nearly so, each 

 with a blue spot : spur twice as long as the petals, nearly straight, usually horizontal : lateral 

 petals bearded, 2-cleft, the lobes not diverging : follicles cylindric, pubescent, 15-20 mm. 

 long: seeds sharply angled, 1.5-2 mm. long, brown. 



In dry ground, Manitoba to Minnesota, Illinois, Texas and Colorado. Summer. 



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