Delphinium nuttallii subsp. ochroleucum(synonym of Delphinium leucophaeum) |
Delphinium variegatum |
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pale larkspur, white rock larkspur |
royal larkspur |
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Stems | 30-60 cm. |
(10-)20-50(-80) cm; base reddish or not, not longitudinally ridged, long-pubescent. |
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Leaves | blade round to pentagonal, 1-4.5 × 2-6 cm, pubescent; ultimate lobes 3-15, width 3-8 mm (basal), 2-5 mm (cauline). |
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Inflorescences | (4-)6-17(-20)-flowered, open; pedicel 0.5-3(-7) cm, usually puberulent; bracteoles 2-7(-23) mm from flowers, green, linear-lanceolate, 3-8 mm, puberulent. |
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Flowers | sepals white or light yellow, spurs 9-11 mm; lower petal blades 4-6 mm. |
sepals usually deep royal blue, sometimes bright blue to light blue or white, ± finely pubescent, lateral sepals spreading, 10-18(-25) × 6-10 mm, spurs straight, ascending ca. 30° above horizontal, 10-19 mm; lower petal blades slightly elevated, ± exposing stamens, 4-11 mm, clefts 0.5-3.5 mm; hairs sparse, more on inner lobes than outer lobe or centered, scattered on margins, white or yellow. |
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Fruits | 9-19 mm, 2.2-3.8 times longer than wide, ± puberulent. |
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Seeds | not echinate, appearing ± smooth to naked eye; seed coat cells with margins ± undulate, surfaces roughened. |
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2n | = 16. |
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Delphinium nuttallii subsp. ochroleucum |
Delphinium variegatum |
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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. Echinata | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | D. menziesii var. (ß) ochroleucum, D. leucophaeum | |||||||||
Name authority | (Nuttall) M. J. Warnock: Phytologia 78: 98. (1995) | Torrey & A. Gray: Fl. N. Amer. 1: 32. 183: not D. variegatum Baillon 1883 | ||||||||
Web links |