Delphinium exaltatum |
Delphinium basalticum |
|
---|---|---|
tall larkspur |
basalt larkspur, basaltic larkspur, Columbia Gorge larkspur |
|
Stems | 70-200 cm; base reddish, nearly glabrous. |
20-50(-65) cm; base often reddish, puberulent. |
Leaves | blade pentagonal, 2-7 × 3-9 cm, puberulent; ultimate lobes 3-7, width 5-25 mm; midcauline leaf lobes less than 3 times longer than wide. |
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 | 8-30-flowered; pedicel 0.5-2 cm, puberulent; bracteoles 2-4 mm from flowers, green, linear, 2-4 mm, puberulent. |
(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 whitish to pale lavender or purple, puberulent, lateral sepals forward pointing, 9-11 × 4-6 mm, spurs straight, as much as 45° above or below horizontal, 9-12 mm; lower petal blades ± covering stamens, 3-5 mm, clefts 1-2 mm; hairs centered, mostly 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 | 7-12 mm, 2-2.5 times longer than wide, ± puberulent. |
12-17 mm, 3.5-4 times longer than wide, glabrous. |
Seeds | ± wing-margined; seed coat cells elongate, surfaces smooth. |
± wing-margined; seed coat cells with surfaces smooth. |
Delphinium exaltatum |
Delphinium basalticum |
|
Phenology | Flowering summer. | Flowering spring (-early summer). |
Habitat | Rocky slopes in open deciduous woods and barrens, mainly on calcareous substrates, also shale and mafic and ultramafic rocks | Basaltic cliff faces, n and e slopes at base of cliffs |
Elevation | 150-2000 m (500-6600 ft) | 200-500 m (700-1600 ft) |
Distribution |
AL; KY; MD; MO; NC; OH; PA; TN; VA; WV
|
OR; WA |
Discussion | 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. Exaltata | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Bicoloria |
Sibling taxa | ||
Name authority | Aiton: Hort. Kew. 2: 244. (1789) | M. J. Warnock: Phytologia 78: 91. (1995) |
Web links |