Delphinium luteum |
Delphinium ramosum |
|
---|---|---|
golden larkspur, yellow larkspur |
mountain larkspur |
|
Stems | 20-40(-55) cm; base often reddish, nearly glabrous. |
(45-)70-100 cm; base sometimes reddish, puberulent. |
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 to pentagonal, 2-8 × 4-14 cm, nearly glabrous; ultimate lobes 5-21, width 1-5 mm; midcauline leaf lobes more than 3 times longer than wide. |
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. |
(10-)15-40(-120)-flowered; pedicel 1-2.5(-4) cm, puberulent; bracteoles 1-3 mm from flowers, green, sometimes margins white, linear or lanceolate, 3-5(-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 bright dark blue, apex rounded, puberulent, lateral sepals forward pointing to spreading, 11-13 × 4-6 mm, spurs straight, ascending ca. 30° above horizontal, 9-13 mm; lower petal blades ± covering stamens, 5-7 mm, clefts 2-3 mm; hairs centered above base of cleft, white. |
Fruits | 11-14 mm, 3.5-4.5 times longer than wide, glabrous. |
11-17 mm, 3-4 times longer than wide, puberulent. |
Seeds | unwinged; seed coat cell surfaces smooth. |
wing-margined; seed coat cells narrow, short, surfaces roughened. |
2n | = 16. |
|
Delphinium luteum |
Delphinium ramosum |
|
Phenology | Flowering late winter-mid spring. | Flowering summer. |
Habitat | Wet cliffs, coastal grassland or chaparral | Meadows, aspen woodlands, Artemisia scrub |
Elevation | 0-50 m (0-200 ft) | 2100-3200(-3400) m (6900-10500(-11200) ft) |
Distribution |
CA
|
CO; NM
|
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.) |
Delphinium ramosum hybridizes with D. barbeyi and D. glaucum. (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. Exaltata |
Sibling taxa | ||
Name authority | A. Heller: Bull. S. Calif. Acad. Sci. 6: 68. (1903) | Rydberg: Bull. Torrey Bot. Club 28: 276. (1901) |
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