Delphinium nuttallii subsp. nuttallii(synonym of Delphinium oreganum) |
Delphinium ramosum |
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Willamette Valley larkspur |
mountain larkspur |
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Stems | 40-70 cm. |
(45-)70-100 cm; base sometimes reddish, puberulent. |
Leaves | blade round to pentagonal, 2-8 × 4-14 cm, nearly glabrous; ultimate lobes 5-21, width 1-5 mm; midcauline leaf lobes more than 3 times longer than wide. |
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Inflorescences | (10-)15-40(-120)-flowered; pedicel 1-2.5(-4) cm, puberulent; bracteoles 1-3 mm from flowers, green, sometimes margins white, linear or lanceolate, 3-5(-8) 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, apex rounded, puberulent, lateral sepals forward pointing to spreading, 11-13 × 4-6 mm, spurs straight, ascending ca. 30° above horizontal, 9-13 mm; lower petal blades ± covering stamens, 5-7 mm, clefts 2-3 mm; hairs centered above base of cleft, white. |
Fruits | 11-17 mm, 3-4 times longer than wide, puberulent. |
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Seeds | wing-margined; seed coat cells narrow, short, surfaces roughened. |
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2n | = 16. |
= 16. |
Delphinium nuttallii subsp. nuttallii |
Delphinium ramosum |
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Phenology | Flowering late spring–early summer. | Flowering summer. |
Habitat | Rock outcrops, rocky meadows | Meadows, aspen woodlands, Artemisia scrub |
Elevation | 20-300 m (100-1000 ft) | 2100-3200(-3400) m (6900-10500(-11200) ft) |
Distribution |
OR; WA |
CO; NM
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Discussion | Delphinium ramosum hybridizes with D. barbeyi and D. glaucum. (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. Exaltata |
Sibling taxa | ||
Name authority | unknown | Rydberg: Bull. Torrey Bot. Club 28: 276. (1901) |
Web links |