Delphinium bicolor |
Delphinium barbeyi |
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Flathead larkspur, little larkspur, low larkspur, Montana larkspur |
Barbey larkspur, Barbey's larkspur, subalpine larkspur, tall larkspur |
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Stems | 10-40(-70) cm; base often reddish, glabrous to puberulent. |
50-150 cm; base green, glabrous. |
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Leaves | blade round, 1-4 × 1.5-7 cm, glabrous to puberulent; ultimate lobes 3-19, width 1-8 mm (basal), 1-3 mm (cauline). |
blade round to reniform, 4-8 × 7-15 cm, glabrous; ultimate lobes 5-9, width 8-50 mm. |
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Inflorescences | 3-12(-22)-flowered; pedicel 1-4(-8) cm, ± puberulent; bracteoles 2-7(-17) mm from flowers, green, sometimes white-margined, lanceolate, 4-6(-8) mm, puberulent. |
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. |
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Flowers | sepals dark blue, puberulent, lateral sepals usually spreading, 16-21 × 6-12 mm, spurs straight to gently decurved, ascending 0-40° above horizontal, 13-23 mm; lower petal blades covering stamens, 7-12 mm, clefts 0.1-3 mm; hairs sparse, short, mostly on inner lobes below junction of blade and claw, white or yellow. |
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. |
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Fruits | (12-)16-22 mm, 4-4.5 times longer than wide, usually puberulent. |
17-22 mm, 2.5-3 times longer than wide, puberulent. |
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Seeds | often winged; seed coat cells with surfaces ± smooth. |
wing-margined; seed coat cells narrow but short, surfaces pustulate. |
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2n | = 16. |
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Delphinium bicolor |
Delphinium barbeyi |
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Phenology | Flowering summer. | |||||
Habitat | Subalpine and alpine sites in wet soils | |||||
Elevation | 2500-4100 m (8200-13500 ft) | |||||
Distribution |
ID; MT; ND; NE; SD; WY; AB; BC; SK
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AZ; CO; NM; UT; WY
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Discussion | Subspecies 2 (2 in the flora). Delphinium bicolor is closely related to D. glareosum; it differs in its wider-lobed cauline leaves, shallower petal clefts, and narrower fruits. The Gosiute consider this plant to be poisonous (D. E. Moerman 1986, subspecies not specified). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
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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. Exaltata | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | D. exaltatum var. (e) barbeyi, D. occidentale var. barbeyi | |||||
Name authority | Nuttall: J. Acad. Nat. Sci. Philadelphia 7: 10. (1834) | (Huth) Huth: Bull. Herb. Boissier 1: 335. (1893) | ||||
Web links |