Delphinium brachycentrum |
Delphinium glareosum |
|
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arctic larkspur, northern larkspur |
Olympic larkspur, Olympic Mountain larkspur, rockslide larkspur |
|
Stems | 20-50(-80) cm; base often reddish, pubescent. |
20-40 cm; base reddish or not, glabrous, glaucous. |
Leaves | blade round to pentagonal, 1.5-6 × 3-11 cm, puberulent; ultimate lobes 5-15, width 1-7(-15) mm. |
blade round, 2-4 × 3-7 cm, not succulent, glabrous; ultimate lobes 7-15, width 3-10 mm (basal), 2-7 mm (cauline). |
Inflorescences | 5-18-flowered; pedicel 1-4.5 cm, pubescent; bracteoles 2-7 mm from flowers, blue, linear, 5-8 mm, puberulent. |
5-12-flowered; pedicel 1-5(-10) cm, nearly glabrous to glandular-puberulent; bracteoles 2-10(-20) mm from flowers, green, linear, 3-8 mm, puberulent. |
Flowers | sepals dark blue, apex rounded, puberulent, lateral sepals forward pointing, 17-24 × 7-9 mm, spurs straight to slightly decurved, ascending 30-60° above horizontal, 15-17 mm; lower petal blades ± covering stamens, 5-7 mm, clefts 0.5-1.5 mm; hairs sparse, local, centered, mostly above base of cleft, white. |
sepals dark blue, nearly glabrous, lateral sepals spreading, 14-22 × 6-10 mm, spurs ± straight, orientation varies from 30° above to 30° below horizontal, 16-20 mm; lower petal blades slightly elevated, ± covering stamens, 6-9 mm, clefts 2-4 mm; hairs local, densest on inner lobes near base of cleft, white to light yellow. |
Fruits | 14-17 mm, 3.5-4 times longer than wide, pubescent. |
12-17 mm, 2.5-3 times longer than wide, glabrous. |
Seeds | wing-margined; seed coat cells ± elongate, surfaces roughened. |
± wing-margined; seed coat cells with surfaces smooth. |
Delphinium brachycentrum |
Delphinium glareosum |
|
Phenology | Flowering summer. | Flowering summer. |
Habitat | Well-drained tundra slopes | Steep rocky subalpine to alpine slopes |
Elevation | 0-1600 m (0-5200 ft) | 1500-2800 m (4900-9200 ft) |
Distribution |
AK; YT; e Asia |
OR; WA; BC
|
Discussion | Hybrids with Delphinium glaucum are known as D. ×nutans A. Nelson. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
See discussion under Delphinium bicolor. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Exaltata | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Bicoloria |
Sibling taxa | ||
Synonyms | D. chamissonis | D. caprorum |
Name authority | Ledebour: Fl. Ross. 1: 60. (1841) | Greene: Pittonia 3: 257. (1898) |
Web links |