An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 5. Delphinium carolinianum Walt. Carolina Larkspur. Fig. 1874. D. carolinianum Walt. FI. Car. 155. 1788. D. asureum Michx. Fl. Bor. Am. i: 314. Delphinium Nortonianum Mackenzie & Bush, Trans. Acad. St. Louis 12: 82. 1902. Stem slender, more or less pubescent, i°-2° high. Leaves deeply cleft into linear toothed or cleft segments; race
An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 5. Delphinium carolinianum Walt. Carolina Larkspur. Fig. 1874. D. carolinianum Walt. FI. Car. 155. 1788. D. asureum Michx. Fl. Bor. Am. i: 314. Delphinium Nortonianum Mackenzie & Bush, Trans. Acad. St. Louis 12: 82. 1902. Stem slender, more or less pubescent, i°-2° high. Leaves deeply cleft into linear toothed or cleft segments; raceme ter- minal, 4'-8' long; flowers pedicelled, blue, about i' long, the spur curved upward, horizontal or nearly erect, 8' long; fol- licles 3. erect or slightly spreading, dow^ny, y'-g' long, tipped with a subulate beak; seed coat rugose. Prairies and open grounds, Virginia to Mis- souri, Florida and Texas. Prairie, blue or azure larkspur. May-July. 6. Delphinium virescens Xutt. Prairie Lark- spur. Fig. 1875. D. virescens Xutt. Gen. 2 : 4. 1818. D. albescens Rydberg, BulL Torr. Club 26: 583. 1899 Perennial, with branched woody roots, pubescent and often somewhat glandular. Stem stout, l°-3° high; leaf- segments linear, i'-3' wide; raceme narrow, rather densely flowered; lower pedicels sometimes 2' long, the upper much shorter; flowers white, or bluish-white, finely pubescent; spur horizontal or ascending, 6'-8' long, straight, or slightly curved upward; follicles 6'- 9' long, erect, puberulent. Prairies, Illinois to Minnesota, Manitoba, Kansas and Texas. D. Penardi Huth. of the Rocky Mountains, is closely related to this species. May-July.
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