Delphinium basalticum |
Delphinium carolinianum |
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basalt larkspur, basaltic larkspur, Columbia Gorge larkspur |
Carolina larkspur |
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Stems | 20-50(-65) cm; base often reddish, puberulent. |
(20-)40-90(-150) cm; base reddish or not, ± pubescent. |
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Leaves | blade round, 2-6 × 5-9 cm, not succulent, nearly glabrous; ultimate lobes 5-19, width 3-15 mm (basal), 1-12 mm (cauline). |
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 | (2-)6-16(-26)-flowered; pedicel 2-7 cm, nearly glabrous; bracteoles 4-12 mm from flowers, green, linear, 3-7 mm, nearly glabrous. |
(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 dark blue, nearly glabrous, lateral sepals spreading, 15-21 × 7-10 mm, spur straight to decurved, ascending 30-45° above horizontal, 14-18 mm; lower petal blades slightly elevated, ± exposing stamens, 7-9 mm, cleft 4-5 mm; hairs centered, mostly on inner lobes above base of cleft, yellow to white. |
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 | 12-17 mm, 3.5-4 times longer than wide, glabrous. |
(10-)12.5-18.5(-27) mm, 4-4.5 times longer than wide, glabrous to puberulent. |
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Seeds | ± wing-margined; seed coat cells with surfaces smooth. |
seed coat cells with surfaces pustulate or smooth. |
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Delphinium basalticum |
Delphinium carolinianum |
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Phenology | Flowering spring (-early summer). | |||||||||||||
Habitat | Basaltic cliff faces, n and e slopes at base of cliffs | |||||||||||||
Elevation | 200-500 m (700-1600 ft) | |||||||||||||
Distribution |
OR; WA |
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. Hybrids between Delphinium basalticum and D. trolliifolium are known. (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. Bicoloria | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Virescens | ||||||||||||
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Subordinate taxa | ||||||||||||||
Name authority | M. J. Warnock: Phytologia 78: 91. (1995) | Walter: Fl. Carol., 155. (1788) | ||||||||||||
Web links |