Delphinium variegatum |
Delphinium antoninum |
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royal larkspur |
Anthony Peak larkspur, Tracy's larkspur |
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Stems | (10-)20-50(-80) cm; base reddish or not, not longitudinally ridged, long-pubescent. |
(7-)15-30(-60) cm; base reddish, glabrous to puberulent. |
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Leaves | blade round to pentagonal, 1-4.5 × 2-6 cm, pubescent; ultimate lobes 3-15, width 3-8 mm (basal), 2-5 mm (cauline). |
blade round, 0.8-4 × 1.2-8 cm, ± succulent, nearly glabrous; ultimate lobes 3-15, width 1-8 mm (basal), 1-4 mm (cauline). |
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Inflorescences | (4-)6-17(-20)-flowered, open; pedicel 0.5-3(-7) cm, usually puberulent; bracteoles 2-7(-23) mm from flowers, green, linear-lanceolate, 3-8 mm, puberulent. |
3-25-flowered; pedicel (0.6-)1.2-3.2 cm, usually puberulent; bracteoles 4-6 mm from flowers, green, linear, 3-5 mm, puberulent. |
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Flowers | sepals usually deep royal blue, sometimes bright blue to light blue or white, ± finely pubescent, lateral sepals spreading, 10-18(-25) × 6-10 mm, spurs straight, ascending ca. 30° above horizontal, 10-19 mm; lower petal blades slightly elevated, ± exposing stamens, 4-11 mm, clefts 0.5-3.5 mm; hairs sparse, more on inner lobes than outer lobe or centered, scattered on margins, white or yellow. |
sepals dark blue to white, nearly glabrous, lateral sepals spreading to reflexed, 11-13 × 4-6 mm, spurs straight to gently decurved, within 30° above or below horizontal, 12-16 mm; lower petal blades elevated, exposing stamens, 3-7 mm, clefts 1.5-3 mm; hairs centered, mostly on inner lobes above base of cleft, white. |
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Fruits | 9-19 mm, 2.2-3.8 times longer than wide, ± puberulent. |
14-22 mm, 3.5-4 times longer than wide, puberulent. |
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Seeds | not echinate, appearing ± smooth to naked eye; seed coat cells with margins ± undulate, surfaces roughened. |
unwinged; seed coat cells with surfaces smooth. |
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Delphinium variegatum |
Delphinium antoninum |
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Phenology | Flowering late spring–early summer. | |||||||||
Habitat | Uncommon on moist talus slopes | |||||||||
Elevation | 1100-2700 m (3600-8900 ft) | |||||||||
Distribution |
CA
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CA |
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Discussion | Subspecies 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Delphinium antoninum hybridizes with D. decorum subsp. tracyi and with D. nudicaule. Most often confused with D. decorum subsp. tracyi, it is separable on the basis of its longer root, usually reflexed sepals, and typically colorfast flowers. It also may be confused with D. andersonii; see discussion under that species. (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. Echinata | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Bicoloria | ||||||||
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Subordinate taxa | ||||||||||
Name authority | Torrey & A. Gray: Fl. N. Amer. 1: 32. 183: not D. variegatum Baillon 1883 | Eastwood: Leafl. W. Bot. 3: 126. (1942) | ||||||||
Web links |