Delphinium xantholeucum |
Delphinium scopulorum |
|
---|---|---|
yellow-white larkspur |
Rocky Mountain larkspur |
|
Stems | 40-60(-100) cm; base often reddish, glabrous, ± glaucous. |
50-120 cm; base often reddish, puberulent, midstems glabrous to subglabrous. |
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, 1.5-10 × 2-16 cm, nearly glabrous; ultimate lobes 5-19, width 5-30 mm (basal), 1-10 mm (cauline). |
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. |
10-30-flowered, open, cylindric; pedicel ascending to spreading, 1-3(-4.5) cm, puberulent; bracteoles 2-7 mm from flowers, green, linear, 2-4 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, nearly glabrous, lateral sepals forward pointing, 12-15 × 4-6 mm, spurs gently decurved, slightly ascending, 15-20 mm; lower petal blades ± covering stamens, 5-8 mm, clefts 1-3 mm; hairs sparse, centered, mostly below junction of blade and claw, white. |
Fruits | 15-22 mm, 3-4 times longer than wide, glabrous to glandular-puberulent. |
16-20 mm, 4-4.5 times longer than wide, nearly glabrous. |
Seeds | seed coat cells narrow, short, cell margins straight, surfaces smooth. |
wing-margined; seed coat cells with margins straight, cell surfaces ± roughened. |
2n | = 16. |
= 16. |
Delphinium xantholeucum |
Delphinium scopulorum |
|
Phenology | Flowering spring. | Flowering late summer–early autumn. |
Habitat | Slopes in open yellow pine forests, grasslands, sage scrub | Riparian forests and open woodlands |
Elevation | 150-600 m (500-2000 ft) | 1700-2600 m (5600-8500 ft) |
Distribution |
WA
|
AZ; NM; Mexico (Sonora) |
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.) |
Hybrids are known with Delphinium andesicola. (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. Wislizenana |
Sibling taxa | ||
Synonyms | D. macrophyllum | |
Name authority | Piper: Contr. U.S. Natl. Herb. 11: 280. (1906) | A. Gray: Smithsonian Contr. Knowl. 5(6): 9. (1853) |
Web links |