Delphinium barbeyi |
Delphinium variegatum |
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Barbey larkspur, Barbey's larkspur, subalpine larkspur, tall larkspur |
royal larkspur |
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Stems | 50-150 cm; base green, glabrous. |
(10-)20-50(-80) cm; base reddish or not, not longitudinally ridged, long-pubescent. |
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Leaves | blade round to reniform, 4-8 × 7-15 cm, glabrous; ultimate lobes 5-9, width 8-50 mm. |
blade round to pentagonal, 1-4.5 × 2-6 cm, pubescent; ultimate lobes 3-15, width 3-8 mm (basal), 2-5 mm (cauline). |
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Inflorescences | 10-50-flowered; pedicel 0.5-6 cm, glandular-puberulent; bracteoles 1-4(-8) mm from flowers, blue to green, awl-shaped, 5-14 mm, puberulent. |
(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. |
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Flowers | sepals dark bluish purple, sparsely puberulent, lateral sepals forward pointing, 13-23 × 5-8 mm, spurs ascending ca. 45°, downcurved apically, 10-18 mm; lower petal blades ± covering stamens, 4-7 mm, clefts 2-3 mm; hairs centered, mostly near base of cleft, sparse elsewhere, white or yellow. |
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. |
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Fruits | 17-22 mm, 2.5-3 times longer than wide, puberulent. |
9-19 mm, 2.2-3.8 times longer than wide, ± puberulent. |
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Seeds | wing-margined; seed coat cells narrow but short, surfaces pustulate. |
not echinate, appearing ± smooth to naked eye; seed coat cells with margins ± undulate, surfaces roughened. |
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2n | = 16. |
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Delphinium barbeyi |
Delphinium variegatum |
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Phenology | Flowering summer. | |||||||||
Habitat | Subalpine and alpine sites in wet soils | |||||||||
Elevation | 2500-4100 m (8200-13500 ft) | |||||||||
Distribution |
AZ; CO; NM; UT; WY
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CA
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Discussion | Delphinium barbeyi hybridizes extensively with D. glaucum in western Colorado and eastern Utah, where plants appearing to be hybrid [D. ×occidentale (S. Watson) S. Watson] are often far more common than plants of either putative parent. Several other names have been used for these plants, including D. elatum var. occidentale S. Watson, D. abietorum Tidestrom, and D. scopulorum subsp. occidentale (S. Watson) Abrams. Delphinium barbeyi is also known to hybridize with D. ramosum and D. sapellonis. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 3 (3 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. Exaltata | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Echinata | ||||||||
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Subordinate taxa | ||||||||||
Synonyms | D. exaltatum var. (e) barbeyi, D. occidentale var. barbeyi | |||||||||
Name authority | (Huth) Huth: Bull. Herb. Boissier 1: 335. (1893) | Torrey & A. Gray: Fl. N. Amer. 1: 32. 183: not D. variegatum Baillon 1883 | ||||||||
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