Delphinium xantholeucum |
Delphinium basalticum |
|
---|---|---|
yellow-white larkspur |
basalt larkspur, basaltic larkspur, Columbia Gorge larkspur |
|
Stems | 40-60(-100) cm; base often reddish, glabrous, ± glaucous. |
20-50(-65) cm; base often 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, 2-6 × 5-9 cm, not succulent, nearly glabrous; ultimate lobes 5-19, width 3-15 mm (basal), 1-12 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. |
(2-)6-16(-26)-flowered; pedicel 2-7 cm, nearly glabrous; bracteoles 4-12 mm from flowers, green, linear, 3-7 mm, nearly glabrous. |
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 blue, nearly glabrous, lateral sepals spreading, 15-21 × 7-10 mm, spur straight to decurved, ascending 30-45° above horizontal, 14-18 mm; lower petal blades slightly elevated, ± exposing stamens, 7-9 mm, cleft 4-5 mm; hairs centered, mostly on inner lobes above base of cleft, yellow to white. |
Fruits | 15-22 mm, 3-4 times longer than wide, glabrous to glandular-puberulent. |
12-17 mm, 3.5-4 times longer than wide, glabrous. |
Seeds | seed coat cells narrow, short, cell margins straight, surfaces smooth. |
± wing-margined; seed coat cells with surfaces smooth. |
2n | = 16. |
|
Delphinium xantholeucum |
Delphinium basalticum |
|
Phenology | Flowering spring. | Flowering spring (-early summer). |
Habitat | Slopes in open yellow pine forests, grasslands, sage scrub | Basaltic cliff faces, n and e slopes at base of cliffs |
Elevation | 150-600 m (500-2000 ft) | 200-500 m (700-1600 ft) |
Distribution |
WA
|
OR; WA |
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. Hybrids between Delphinium basalticum and D. trolliifolium are known. (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. Bicoloria |
Sibling taxa | ||
Name authority | Piper: Contr. U.S. Natl. Herb. 11: 280. (1906) | M. J. Warnock: Phytologia 78: 91. (1995) |
Web links |