Delphinium hansenii |
Delphinium purpusii |
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Eldorado larkspur, Hansen's delphinium, Hansen's larkspur |
Kern County larkspur, Purpus' larkspur, rose-color larkspur, rose-flower larkspur |
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Stems | (25-)40-80(-180) cm; base usually reddish, pubescent. |
(30-)50-80(-120) cm; base reddish or not, nearly glabrous. |
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Leaves | blade pentagonal, 1.5-5 × 2.5-8 cm, long-pubescent, especially abaxially; ultimate lobes 0-18, width 4-20 mm (basal), 2-9 mm (cauline). |
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 | (9-)15-40(-160)-flowered, dense to open; pedicel 0.3-2.5(-6) cm, puberulent; bracteoles 1-5(-8) mm from flowers, green, sometimes white-margined, linear-lanceolate, 2-6(-8) mm, puberulent. |
(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 violet to white, ± puberulent, lateral sepals spreading to forward pointing, 7-10(-13) × 3-6(-8) mm, spurs gently upcurved, ascending 0-30° above horizontal, (6-)9-13(-16) mm; lower petal blades elevated, ± exposing stamens, 3-7 mm, cleft 1-2(-4) mm; hairs centered, densest on inner lobes near base of cleft, white. |
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. |
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Fruits | 8-20 mm, 2.2-4 times longer than wide, glabrous. |
(11-)18-29 mm, 4-4.5 times longer than wide, glabrous. |
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Seeds | echinate, appearing fuzzy to naked eye; seed coat cells with margins straight, surfaces sparsely pustulate. |
seed coats with small wavy ridges, cells brick-shaped, cell margins undulate, surfaces smooth. |
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2n | = 16. |
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Delphinium hansenii |
Delphinium purpusii |
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Phenology | Flowering spring. | |||||||||
Habitat | Talus, cliffs, on and near large boulders | |||||||||
Elevation | 300-1300 m (1000-4300 ft) | |||||||||
Distribution |
CA
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CA
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Discussion | Subspecies 3 (3 in the flora). Although Delphinium hansenii has often been confused with D. hesperium, seeds will instantly allow identification. Seeds of Delphinium hansenii are, as far as known, unique, bearing numerous, elongate, prismlike raised structures (extensions of single cells or small groups of cells) over the entire seed coat. If seeds are absent, larger flowers, more open inflorescences (except in D. hesperium subsp. cuyamacae), and general absence of pubescence of long hairs in D. hesperium are apparent upon comparison of the two species. Separating D. hansenii from D. variegatum may also be difficult. Again, seeds leave no doubt. In addition, smaller flowers and greater number of flowers per plant of D. hansenii should serve to distinguish D. hansenii from D. variegatum. White-flowered D. hansenii has been confused with D. gypsophilum and with D. hesperium subsp. pallescens. Other than seeds, pubescence of long hairs and smaller flowers present in D. hansenii and absent in the others will distinguish them. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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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Key |
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Source | FNA vol. 3. | FNA vol. 3. | ||||||||
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Echinata | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Subscaposa | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | D. hesperium var. hansenii | |||||||||
Name authority | (Greene) Greene: Pittonia 3: 94. (1896) | Brandegee: Bot. Gaz. 27: 444. (1899) | ||||||||
Web links |