Delphinium nuttallii subsp. ochroleucum(synonym of Delphinium leucophaeum) |
Delphinium carolinianum |
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pale larkspur, white rock larkspur |
Carolina larkspur |
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Stems | 30-60 cm. |
(20-)40-90(-150) cm; base reddish or not, ± pubescent. |
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Leaves | blade round to pentagonal, 1-8 × 2-12 cm, pubescence variable; ultimate lobes 3-29, width 2-10 mm (basal), 1-7 mm (cauline). |
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Inflorescences | (3-)8-27(-94)-flowered; pedicel (0.4-)0.7-1.8(-5.7) cm, nearly glabrous to glandular; bracteoles 1-3.5(-6) mm from flowers, green or blue, linear, 2-7 mm, pubescence nearly glabrous to glandular. |
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Flowers | sepals white or light yellow, spurs 9-11 mm; lower petal blades 4-6 mm. |
sepals purple to blue to white, nearly glabrous, lateral sepals spreading, (7-)9-14(-17) × (3-)3.5-6(-8) mm, spurs ± upcurved, ascending 20-90° above vertical, (9-)11-17(-19) mm; lower petal blades ± covering stamens, 5-7 mm, cleft 2-4 mm; hairs centered, densest near base of cleft, white, sometimes blue or yellow. |
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Fruits | (10-)12.5-18.5(-27) mm, 4-4.5 times longer than wide, glabrous to puberulent. |
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Seeds | seed coat cells with surfaces pustulate or smooth. |
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2n | = 16. |
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Delphinium nuttallii subsp. ochroleucum |
Delphinium carolinianum |
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Phenology | Flowering late spring. | |||||||||||||
Habitat | Rock outcrops, rocky meadows | |||||||||||||
Elevation | 50-100 m (200-300 ft) | |||||||||||||
Distribution |
OR
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AL; AR; CO; FL; GA; IA; IL; KS; KY; LA; MN; MO; MS; NC; ND; NE; OK; SC; SD; TN; TX; WI; MB; Mexico
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Discussion | Of conservation concern. The range of morphologic features of Delphinium nuttallii subsp. ochroleucum (D. leucophaeum) is almost completely encompassed within that of D. nuttallii subsp. nuttallii. Sepal color is the only feature consistently separating the two subspecies. Were it not for the fact that any given population typically has plants of only one flower color, a rank of forma would be more appropriate. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 4 (4 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 3. | FNA vol. 3. | ||||||||||||
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Grumosa > Delphinium nuttallii | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Virescens | ||||||||||||
Sibling taxa | ||||||||||||||
Subordinate taxa | ||||||||||||||
Synonyms | D. menziesii var. (ß) ochroleucum, D. leucophaeum | |||||||||||||
Name authority | (Nuttall) M. J. Warnock: Phytologia 78: 98. (1995) | Walter: Fl. Carol., 155. (1788) | ||||||||||||
Web links |