Delphinium nuttallii subsp. nuttallii(synonym of Delphinium oreganum) |
Delphinium scopulorum |
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Willamette Valley larkspur |
Rocky Mountain larkspur |
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Stems | 40-70 cm. |
50-120 cm; base often reddish, puberulent, midstems glabrous to subglabrous. |
Leaves | blade round to pentagonal, 1.5-10 × 2-16 cm, nearly glabrous; ultimate lobes 5-19, width 5-30 mm (basal), 1-10 mm (cauline). |
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Inflorescences | 10-30-flowered, open, cylindric; pedicel ascending to spreading, 1-3(-4.5) cm, puberulent; bracteoles 2-7 mm from flowers, green, linear, 2-4 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 bright dark blue, nearly glabrous, lateral sepals forward pointing, 12-15 × 4-6 mm, spurs gently decurved, slightly ascending, 15-20 mm; lower petal blades ± covering stamens, 5-8 mm, clefts 1-3 mm; hairs sparse, centered, mostly below junction of blade and claw, white. |
Fruits | 16-20 mm, 4-4.5 times longer than wide, nearly glabrous. |
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Seeds | wing-margined; seed coat cells with margins straight, cell surfaces ± roughened. |
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2n | = 16. |
= 16. |
Delphinium nuttallii subsp. nuttallii |
Delphinium scopulorum |
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Phenology | Flowering late spring–early summer. | Flowering late summer–early autumn. |
Habitat | Rock outcrops, rocky meadows | Riparian forests and open woodlands |
Elevation | 20-300 m (100-1000 ft) | 1700-2600 m (5600-8500 ft) |
Distribution |
OR; WA |
AZ; NM; Mexico (Sonora) |
Discussion | Hybrids are known with Delphinium andesicola. (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. Wislizenana |
Sibling taxa | ||
Synonyms | D. macrophyllum | |
Name authority | unknown | A. Gray: Smithsonian Contr. Knowl. 5(6): 9. (1853) |
Web links |