Delphinium xantholeucum |
Delphinium wootonii |
|
---|---|---|
yellow-white larkspur |
Organ Mountain larkspur, Wooton's larkspur |
|
Stems | 40-60(-100) cm; base often reddish, glabrous, ± glaucous. |
(15-)30-50(-60) cm; base sometimes reddish, pubescent. |
Leaves | blade round, 2-6 × 4-10 cm, nearly glabrous; ultimate lobes 3-15, width 3-8 mm (basal), 1-5 mm (cauline). |
blade reniform to fan-shaped, 1.5-3 × 2.5-4 cm, puberulent; ultimate lobes 5-24, width 2-6 mm (basal), 1-3 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. |
15-30(-49)-flowered; pedicel 1-2(-3.6) cm, puberulent; bracteoles 1-5 mm from flowers, green, linear, 1-4(-12) 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 white to lavender, nearly glabrous, lateral sepals usually reflexed, (6-)8-13 × 3-7 mm, spur straight, ascending 30-80° above horizontal, (8-)13-20(-25) mm; lower petal blades ± elevated, 6-9 mm, cleft 2.5-4.5 mm; hairs centered, densest near base of cleft, white. |
Fruits | 15-22 mm, 3-4 times longer than wide, glabrous to glandular-puberulent. |
(10-)11-20(-24) mm, 3-3.5 times longer than wide, glabrous. |
Seeds | seed coat cells narrow, short, cell margins straight, surfaces smooth. |
seed coat cells with surfaces pustulate. |
2n | = 16. |
= 16. |
Delphinium xantholeucum |
Delphinium wootonii |
|
Phenology | Flowering spring. | Flowering spring. |
Habitat | Slopes in open yellow pine forests, grasslands, sage scrub | Oak woods, grasslands, desert scrub |
Elevation | 150-600 m (500-2000 ft) | 700-1800 m (2300-5900 ft) |
Distribution |
WA
|
AZ; CO; NM; TX; Mexico (Sonora, Chihuahua, and Coahuila)
|
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 wootonii hybridizes with D. madrense in the eastern Big Bend area of Texas, and with D. carolinianum subsp. virescens. (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. Virescens |
Sibling taxa | ||
Synonyms | D. virescens subsp. wootonii | |
Name authority | Piper: Contr. U.S. Natl. Herb. 11: 280. (1906) | Rydberg: Bull. Torrey Bot. Club 26: 587. (1900) |
Web links |