Delphinium nuttallii subsp. nuttallii(synonym of Delphinium oreganum) |
Delphinium purpusii |
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Willamette Valley larkspur |
Kern County larkspur, Purpus' larkspur, rose-color larkspur, rose-flower larkspur |
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Stems | 40-70 cm. |
(30-)50-80(-120) cm; base reddish or not, nearly glabrous. |
Leaves | blade round, 1.5-6 × 2-10 cm, ± puberulent; ultimate lobes 0-5, width 5-30(-50) mm (basal), 5-20(-40) mm (cauline). |
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Inflorescences | (8-)12-20(-32)-flowered, ± cylindric; pedicel ± ascending, (0.5-)1-4(-5) cm, glandular-puberulent; bracteoles 1-6 mm from flowers, green to magenta, linear, 2-4 mm, glandular-puberulent. |
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Flowers | sepals blue or bluish purple, spurs 10-13 mm; lower petal blades 4.5-6.5 mm. |
sepals magenta to rose, nearly glabrous, lateral sepals reflexed, 10-16 × 3-7 mm, spurs straight, 30-45° above horizontal, (10-)14-19 mm; lower petal blades nearly coplanar with claws, exposing stamens, 3-4 mm, clefts 0.5-1.5 mm; hairs sparse, scattered, white. |
Fruits | (11-)18-29 mm, 4-4.5 times longer than wide, glabrous. |
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Seeds | seed coats with small wavy ridges, cells brick-shaped, cell margins undulate, surfaces smooth. |
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2n | = 16. |
= 16. |
Delphinium nuttallii subsp. nuttallii |
Delphinium purpusii |
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Phenology | Flowering late spring–early summer. | Flowering spring. |
Habitat | Rock outcrops, rocky meadows | Talus, cliffs, on and near large boulders |
Elevation | 20-300 m (100-1000 ft) | 300-1300 m (1000-4300 ft) |
Distribution |
OR; WA |
CA
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Discussion | Of conservation concern. Delphinium purpusii is not likely to be confused with any other Delphinium in North America. Hybrids with Delphinium hansenii subsp. kernense are known to occur. (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. Subscaposa |
Sibling taxa | ||
Name authority | unknown | Brandegee: Bot. Gaz. 27: 444. (1899) |
Web links |