Delphinium nuttallii subsp. ochroleucum(synonym of Delphinium leucophaeum) |
Delphinium glareosum |
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pale larkspur, white rock larkspur |
Olympic larkspur, Olympic Mountain larkspur, rockslide larkspur |
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Stems | 30-60 cm. |
20-40 cm; base reddish or not, glabrous, glaucous. |
Leaves | blade round, 2-4 × 3-7 cm, not succulent, glabrous; ultimate lobes 7-15, width 3-10 mm (basal), 2-7 mm (cauline). |
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Inflorescences | 5-12-flowered; pedicel 1-5(-10) cm, nearly glabrous to glandular-puberulent; bracteoles 2-10(-20) mm from flowers, green, linear, 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 dark blue, nearly glabrous, lateral sepals spreading, 14-22 × 6-10 mm, spurs ± straight, orientation varies from 30° above to 30° below horizontal, 16-20 mm; lower petal blades slightly elevated, ± covering stamens, 6-9 mm, clefts 2-4 mm; hairs local, densest on inner lobes near base of cleft, white to light yellow. |
Fruits | 12-17 mm, 2.5-3 times longer than wide, glabrous. |
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Seeds | ± wing-margined; seed coat cells with surfaces smooth. |
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2n | = 16. |
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Delphinium nuttallii subsp. ochroleucum |
Delphinium glareosum |
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Phenology | Flowering late spring. | Flowering summer. |
Habitat | Rock outcrops, rocky meadows | Steep rocky subalpine to alpine slopes |
Elevation | 50-100 m (200-300 ft) | 1500-2800 m (4900-9200 ft) |
Distribution |
OR
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OR; WA; BC
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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.) |
See discussion under Delphinium bicolor. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Grumosa > Delphinium nuttallii | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Bicoloria |
Sibling taxa | ||
Synonyms | D. menziesii var. (ß) ochroleucum, D. leucophaeum | D. caprorum |
Name authority | (Nuttall) M. J. Warnock: Phytologia 78: 98. (1995) | Greene: Pittonia 3: 257. (1898) |
Web links |