Delphinium xantholeucum |
Delphinium ramosum |
|
---|---|---|
yellow-white larkspur |
mountain larkspur |
|
Stems | 40-60(-100) cm; base often reddish, glabrous, ± glaucous. |
(45-)70-100 cm; base sometimes reddish, puberulent. |
Leaves | blade round, 2-6 × 4-10 cm, nearly glabrous; ultimate lobes 3-15, width 3-8 mm (basal), 1-5 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 | 10-20(-60)-flowered, narrowly pyramidal; pedicel spreading, yellowish, 1.5-3 cm, ± glandular-puberulent; bracteoles 6-12 mm from flowers, green to light brown, linear to lanceolate, 4-7 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 yellow, glabrous, lateral sepals reflexed, 9-12 × 3-5 mm, spurs straight, ascending ca. 45° above horizontal, 11-15 mm; lower petal blades elevated, exposing stamens, 3-5 mm, clefts 1-2 mm; hairs centered mostly on inner lobes near base of cleft, white. |
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 | 15-22 mm, 3-4 times longer than wide, glabrous to glandular-puberulent. |
11-17 mm, 3-4 times longer than wide, puberulent. |
Seeds | seed coat cells narrow, short, cell margins straight, surfaces smooth. |
wing-margined; seed coat cells narrow, short, surfaces roughened. |
2n | = 16. |
= 16. |
Delphinium xantholeucum |
Delphinium ramosum |
|
Phenology | Flowering spring. | Flowering summer. |
Habitat | Slopes in open yellow pine forests, grasslands, sage scrub | Meadows, aspen woodlands, Artemisia scrub |
Elevation | 150-600 m (500-2000 ft) | 2100-3200(-3400) m (6900-10500(-11200) ft) |
Distribution |
WA
|
CO; NM
|
Discussion | Of conservation concern. Delphinium xantholeucum is very local; much of the habitat of this species has been converted to orchards. (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. Subscaposa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Exaltata |
Sibling taxa | ||
Name authority | Piper: Contr. U.S. Natl. Herb. 11: 280. (1906) | Rydberg: Bull. Torrey Bot. Club 28: 276. (1901) |
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