Delphinium nuttallii subsp. nuttallii(synonym of Delphinium oreganum) |
Delphinium madrense |
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Willamette Valley larkspur |
Edwards' Plateau larkspur, Sierra madre larkspur |
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Stems | 40-70 cm. |
30-80(-100) cm; base often reddish, puberulent. |
Leaves | 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 | 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 blue or bluish purple, spurs 10-13 mm; lower petal blades 4.5-6.5 mm. |
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. |
Fruits | 15-21 mm, 3.5-4.5 times longer than wide, nearly glabrous. |
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Seeds | seed coat cells with surfaces pustulate. |
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2n | = 16. |
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Delphinium nuttallii subsp. nuttallii |
Delphinium madrense |
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Phenology | Flowering late spring–early summer. | Flowering spring–early summer. |
Habitat | Rock outcrops, rocky meadows | Calcareous slopes, oak woods or desert scrub |
Elevation | 20-300 m (100-1000 ft) | 300-2100 m (1000-6900 ft) |
Distribution |
OR; WA |
TX; Mexico (Coahuila, Nuevo León, and Tamaulipas) |
Discussion | Delphinium madrense hybridizes with D. carolinianum subspp. vimineum and virescens. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Grumosa > Delphinium nuttallii | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Virescens |
Sibling taxa | ||
Name authority | unknown | S. Watson: Proc. Amer. Acad. Arts 17: 141. (1890) |
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