Delphinium luteum |
Delphinium parishii |
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golden larkspur, yellow larkspur |
desert larkspur, Parish's larkspur |
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Stems | 20-40(-55) cm; base often reddish, nearly glabrous. |
(17-)30-60(-100) cm; base reddish or not, glabrous to puberulent. |
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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 pentagonal, 0.7-5 × 1-8 cm, glabrous to puberulent; ultimate lobes 3-18, width 2-18 mm (basal), 0.5-8 mm (cauline). |
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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. |
(6-)10-40(-74)-flowered, cylindric; pedicel ascending-spreading, (0.3-)1-2.5(-4.8) cm, glabrous to puberulent; bracteoles 2-5(-10) mm from flowers, green, lance-linear, 2-6(-16) mm, glabrous to puberulent. |
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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 to white to pink, often puberulent, lateral sepals reflexed or spreading, (7-)9-13 × 2-7 mm, spurs ± decurved, ascending 20-45° above horizontal, 7-15 mm; lower petal blades ± elevated, exposing stamens, blue or white to pink (concolorous with sepals), 3-6 mm, clefts 1-3 mm; hairs mostly near base of cleft, centered or on inner lobes, white. |
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Fruits | 11-14 mm, 3.5-4.5 times longer than wide, glabrous. |
9-21 mm, 2-4 times longer than wide, glabrous to puberulent. |
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Seeds | unwinged; seed coat cell surfaces smooth. |
seed coat cells ± brick-shaped, cell margins undulate, surfaces roughened. |
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Delphinium luteum |
Delphinium parishii |
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Phenology | Flowering late winter-mid spring. | |||||||||
Habitat | Wet cliffs, coastal grassland or chaparral | |||||||||
Elevation | 0-50 m (0-200 ft) | |||||||||
Distribution |
CA
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AZ; CA; NV; UT; nw Mexico
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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.) |
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. Bicoloria | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Subscaposa | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Name authority | A. Heller: Bull. S. Calif. Acad. Sci. 6: 68. (1903) | A. Gray: Bot. Gaz. 12: 53. (1887) | ||||||||
Web links |