Delphinium xantholeucum |
Delphinium robustum |
|
---|---|---|
yellow-white larkspur |
robust larkspur, wahatoya creek larkspur |
|
Stems | 40-60(-100) cm; base often reddish, glabrous, ± glaucous. |
100-200(-250) cm; base sometimes reddish, glabrous, glaucous. |
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, 7-12 × 10-20 cm, nearly glabrous; ultimate lobes 5-15, width 6-30 mm, tips gradually tapered to mucronate apex; 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. |
40-90(-180)-flowered; pedicel 0.5-2 cm, puberulent; bracteoles 4-6 mm from flowers, green to purple, linear, 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 bluish purple to pale lavender, nearly glabrous, lateral sepals ± forward pointing, 9-14 × 4-6 mm, spurs slightly decurved, 30-45° above horizontal, dark blue, 10-13 mm; lower petal blades ± covering stamens, 5-7 mm, clefts 2-3 mm; hairs centered, mostly on inner lobes near base of cleft, yellow to white. |
Fruits | 15-22 mm, 3-4 times longer than wide, glabrous to glandular-puberulent. |
13-18 mm, 3-4 times longer than wide, puberulent. |
Seeds | seed coat cells narrow, short, cell margins straight, surfaces smooth. |
wing-margined; seed coat cells elongate, surfaces smooth. |
2n | = 16. |
|
Delphinium xantholeucum |
Delphinium robustum |
|
Phenology | Flowering spring. | Flowering summer. |
Habitat | Slopes in open yellow pine forests, grasslands, sage scrub | Riparian woodlands, subalpine meadows |
Elevation | 150-600 m (500-2000 ft) | 2200-3000 m (7200-9800 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.) |
Of conservation concern. Delphinium robustum is the representative of the southern Cordilleran complex from the Jemez, San Antonio, San Juan, San Pedro, and Sangre de Cristo mountains. Hybrids are known with 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 | ||
Name authority | Piper: Contr. U.S. Natl. Herb. 11: 280. (1906) | Rydberg: Bull. Torrey Bot. Club 28: 276. (1901) |
Web links |