Delphinium xantholeucum |
Delphinium barbeyi |
|
---|---|---|
yellow-white larkspur |
Barbey larkspur, Barbey's larkspur, subalpine larkspur, tall larkspur |
|
Stems | 40-60(-100) cm; base often reddish, glabrous, ± glaucous. |
50-150 cm; base green, glabrous. |
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 reniform, 4-8 × 7-15 cm, glabrous; ultimate lobes 5-9, width 8-50 mm. |
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. |
10-50-flowered; pedicel 0.5-6 cm, glandular-puberulent; bracteoles 1-4(-8) mm from flowers, blue to green, awl-shaped, 5-14 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 dark bluish purple, sparsely puberulent, lateral sepals forward pointing, 13-23 × 5-8 mm, spurs ascending ca. 45°, downcurved apically, 10-18 mm; lower petal blades ± covering stamens, 4-7 mm, clefts 2-3 mm; hairs centered, mostly near base of cleft, sparse elsewhere, white or yellow. |
Fruits | 15-22 mm, 3-4 times longer than wide, glabrous to glandular-puberulent. |
17-22 mm, 2.5-3 times longer than wide, puberulent. |
Seeds | seed coat cells narrow, short, cell margins straight, surfaces smooth. |
wing-margined; seed coat cells narrow but short, surfaces pustulate. |
2n | = 16. |
= 16. |
Delphinium xantholeucum |
Delphinium barbeyi |
|
Phenology | Flowering spring. | Flowering summer. |
Habitat | Slopes in open yellow pine forests, grasslands, sage scrub | Subalpine and alpine sites in wet soils |
Elevation | 150-600 m (500-2000 ft) | 2500-4100 m (8200-13500 ft) |
Distribution |
WA
|
AZ; CO; NM; UT; WY
|
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 barbeyi hybridizes extensively with D. glaucum in western Colorado and eastern Utah, where plants appearing to be hybrid [D. ×occidentale (S. Watson) S. Watson] are often far more common than plants of either putative parent. Several other names have been used for these plants, including D. elatum var. occidentale S. Watson, D. abietorum Tidestrom, and D. scopulorum subsp. occidentale (S. Watson) Abrams. Delphinium barbeyi is also known to hybridize with D. ramosum and D. sapellonis. (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 | ||
Synonyms | D. exaltatum var. (e) barbeyi, D. occidentale var. barbeyi | |
Name authority | Piper: Contr. U.S. Natl. Herb. 11: 280. (1906) | (Huth) Huth: Bull. Herb. Boissier 1: 335. (1893) |
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