Delphinium menziesii |
Delphinium madrense |
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Menzies' larkspur |
Edwards' Plateau larkspur, Sierra madre larkspur |
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Stems | (10-)35-70(-85) cm; base often reddish, puberulent. |
30-80(-100) cm; base often reddish, puberulent. |
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Leaves | blade round, 1.5-5 × 3-9 cm, puberulent; ultimate lobes 5-18, width 2-15 mm (basal), 1-10 mm (cauline), widest at middle or in proximal 1/2. |
blade semicircular to cordate, 2-8 × 2-10 cm, nearly glabrous; ultimate lobes 3-12, width 3-10 mm (basal), 2-6 mm (cauline). |
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Inflorescences | 3-15(-43)-flowered; pedicel 1.5-4(-7) cm, (glandular) puberulent; bracteoles 8-10(-24) mm from flowers, green to blue, linear, 4-6(-9) mm, puberulent. |
5-75(-98)-flowered; pedicel 1-2.5(-5) cm, puberulent; bracteoles 2-4(-8) mm from flowers, green, lanceolate-linear, 3-5 mm, puberulent. |
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Flowers | sepals bluish purple or yellowish, often partly fading upon drying, puberulent, lateral sepals spreading, (11-)13-20 × 5-11 mm, spurs straight, ascending less than 30° above horizontal, 11-17 mm; lower petal blades ± covering stamens, 8-12 mm, clefts 0.2-2.5 mm; hairs sparse, centered, mostly near junction of blade and claw above base of cleft, white or blue. |
sepals dark blue to light blue, puberulent, lateral sepals spreading, 9-15 × 5-7 mm, spurs straight, ascending ca. 45(-90)°, 10-15(-19) mm; lower petal blades elevated, exposing stamens, 4-7 mm, clefts 2-4 mm; hairs centered, densest on inner lobes near base of cleft, white. |
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Fruits | 11-17 mm, 3.5-4 times longer than wide, puberulent. |
15-21 mm, 3.5-4.5 times longer than wide, nearly glabrous. |
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Seeds | wing-margined; seed coat cell surfaces smooth, without swollen blunt hair. |
seed coat cells with surfaces pustulate. |
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Delphinium menziesii |
Delphinium madrense |
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Phenology | Flowering spring–early summer. | |||||
Habitat | Calcareous slopes, oak woods or desert scrub | |||||
Elevation | 300-2100 m (1000-6900 ft) | |||||
Distribution |
OR; WA; BC
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TX; Mexico (Coahuila, Nuevo León, and Tamaulipas) |
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Discussion | Subspecies 2 (2 in the flora). Although Delphinium menziesii has often been confused with D. nuttallii, it may be distinguished by its consistently larger flowers and usually fewer flowers per plant. Interestingly, each species produces both blue-purple and yellowish flower colors in separate populations. The Chehalis consider Delphinium menziesii poisonous, but they also apply it to sores. The women of the Thompson Indians use it as a love charm (D. E. Moerman 1986, subspecies not indicated). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Delphinium madrense hybridizes with D. carolinianum subspp. vimineum and virescens. (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 | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Virescens | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | de Candolle: Syst. Nat. 1: 355. (1817) | S. Watson: Proc. Amer. Acad. Arts 17: 141. (1890) | ||||
Web links |