Delphinium nuttallii subsp. ochroleucum(synonym of Delphinium leucophaeum) |
Delphinium patens |
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pale larkspur, white rock larkspur |
spreading larkspur, spreading or zigzag larkspur, zigzag larkspur |
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Stems | 30-60 cm. |
(10-)20-50(-90) cm; base reddish, glabrous to puberulent. |
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Leaves | blade round to pentagonal, 1-5.5 × 2-7.5 cm, nearly glabrous; ultimate lobes 3-9, less often wedge-shaped, 5 or more extending more than 3/5 distance to petiole, width 5-30(-50) mm (basal), 1-15 mm (cauline), widest at middle or in proximal 1/2. |
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Inflorescences | 4-25(-36)-flowered; pedicel spreading from rachis at usually less than 70°, 1-4(-8) cm, glabrous to glandular; bracteoles 3-12(-23) mm from flowers, blue to green, linear, 3-8(-16) mm, glabrous to glandular. |
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Flowers | sepals white or light yellow, spurs 9-11 mm; lower petal blades 4-6 mm. |
sepals dark blue, usually retaining color upon drying, glabrous, lateral sepals reflexed, (6-)10-15(-20) × 4-8 mm, spurs straight, ascending ca. 30° above horizontal, 8-18 mm; lower petal blades elevated, exposing stamens, 3-6(-8) mm, clefts 1-3 mm; hairs centered on base of cleft or on inner lobes, scattered, white, rarely yellow. |
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Fruits | 12-23 mm, 3.3-3.6 times longer than wide, glabrous or puberulent. |
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Seeds | unwinged; seed coats ± pitted, cell surfaces roughened. |
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2n | = 16. |
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Delphinium nuttallii subsp. ochroleucum |
Delphinium patens |
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Phenology | Flowering late spring. | |||||||||
Habitat | Rock outcrops, rocky meadows | |||||||||
Elevation | 50-100 m (200-300 ft) | |||||||||
Distribution |
OR
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CA
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Discussion | Of conservation concern. The range of morphologic features of Delphinium nuttallii subsp. ochroleucum (D. leucophaeum) is almost completely encompassed within that of D. nuttallii subsp. nuttallii. Sepal color is the only feature consistently separating the two subspecies. Were it not for the fact that any given population typically has plants of only one flower color, a rank of forma would be more appropriate. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 3 (3 in the flora). (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. Grumosa > Delphinium nuttallii | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Grumosa | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | D. menziesii var. (ß) ochroleucum, D. leucophaeum | |||||||||
Name authority | (Nuttall) M. J. Warnock: Phytologia 78: 98. (1995) | Bentham: Pl. Hartw., 296. (1849) | ||||||||
Web links |