Delphinium luteum |
Delphinium glareosum |
|
---|---|---|
golden larkspur, yellow larkspur |
Olympic larkspur, Olympic Mountain larkspur, rockslide larkspur |
|
Stems | 20-40(-55) cm; base often reddish, nearly glabrous. |
20-40 cm; base reddish or not, glabrous, glaucous. |
Leaves | blade round to pentagonal, 1-5 × 2-10 cm, nearly glabrous; ultimate lobes 3-5, width 8-30 mm (basal), 5-15 mm (cauline). |
blade round, 2-4 × 3-7 cm, not succulent, glabrous; ultimate lobes 7-15, width 3-10 mm (basal), 2-7 mm (cauline). |
Inflorescences | 5-25(-37)-flowered; pedicel (1-)3-5(-7) cm, puberulent; bracteoles 6-10(-17) mm from flowers, green, linear-lanceolate, 6-7 mm, nearly glabrous. |
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. |
Flowers | sepals bright yellow, puberulent, appearing waxy, lateral sepals ± forward pointing, (11-)14-16 × (6-)9-13 mm, spur straight, ca. 30° below horizontal, 11-20 mm; lower petal blades elevated, exposing stamens, 3-4 mm, clefts 0.5-1.5 mm; hairs sparse or absent, ± evenly distributed if present, white to yellow. |
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 | 11-14 mm, 3.5-4.5 times longer than wide, glabrous. |
12-17 mm, 2.5-3 times longer than wide, glabrous. |
Seeds | unwinged; seed coat cell surfaces smooth. |
± wing-margined; seed coat cells with surfaces smooth. |
Delphinium luteum |
Delphinium glareosum |
|
Phenology | Flowering late winter-mid spring. | Flowering summer. |
Habitat | Wet cliffs, coastal grassland or chaparral | Steep rocky subalpine to alpine slopes |
Elevation | 0-50 m (0-200 ft) | 1500-2800 m (4900-9200 ft) |
Distribution |
CA
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OR; WA; BC
|
Discussion | Of conservation concern. Delphinium luteum is presently known from only three populations. It is known to hybridize with D. decorum and with D. nudicaule. Populations of D. hesperium subsp. hesperium also occur at the type locality; D. luteum flowers earlier and hybrids are not known. Delphinium luteum is not likely to be mistaken for any other species of Delphinium. It has been treated as a variety of D. nudicaule and is closely related to that species. Sepals of the infrequent yellow-flowered phase of D. nudicaule, however, have a much drabber appearance compared with the bright shining yellow of the sepals in D. luteum. (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. Bicoloria | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Bicoloria |
Sibling taxa | ||
Synonyms | D. caprorum | |
Name authority | A. Heller: Bull. S. Calif. Acad. Sci. 6: 68. (1903) | Greene: Pittonia 3: 257. (1898) |
Web links |