Delphinium exaltatum |
Delphinium scopulorum |
|
---|---|---|
tall larkspur |
Rocky Mountain larkspur |
|
Stems | 70-200 cm; base reddish, nearly glabrous. |
50-120 cm; base often reddish, puberulent, midstems glabrous to subglabrous. |
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 to pentagonal, 1.5-10 × 2-16 cm, nearly glabrous; ultimate lobes 5-19, width 5-30 mm (basal), 1-10 mm (cauline). |
Inflorescences | 8-30-flowered; pedicel 0.5-2 cm, puberulent; bracteoles 2-4 mm from flowers, green, linear, 2-4 mm, puberulent. |
10-30-flowered, open, cylindric; pedicel ascending to spreading, 1-3(-4.5) cm, puberulent; bracteoles 2-7 mm from flowers, green, linear, 2-4 mm, puberulent. |
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 bright dark blue, nearly glabrous, lateral sepals forward pointing, 12-15 × 4-6 mm, spurs gently decurved, slightly ascending, 15-20 mm; lower petal blades ± covering stamens, 5-8 mm, clefts 1-3 mm; hairs sparse, centered, mostly below junction of blade and claw, white. |
Fruits | 7-12 mm, 2-2.5 times longer than wide, ± puberulent. |
16-20 mm, 4-4.5 times longer than wide, nearly glabrous. |
Seeds | ± wing-margined; seed coat cells elongate, surfaces smooth. |
wing-margined; seed coat cells with margins straight, cell surfaces ± roughened. |
2n | = 16. |
|
Delphinium exaltatum |
Delphinium scopulorum |
|
Phenology | Flowering summer. | Flowering late summer–early autumn. |
Habitat | Rocky slopes in open deciduous woods and barrens, mainly on calcareous substrates, also shale and mafic and ultramafic rocks | Riparian forests and open woodlands |
Elevation | 150-2000 m (500-6600 ft) | 1700-2600 m (5600-8500 ft) |
Distribution |
AL; KY; MD; MO; NC; OH; PA; TN; VA; WV
|
AZ; NM; Mexico (Sonora) |
Discussion | Hybrids are known with Delphinium andesicola. (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. Wislizenana |
Sibling taxa | ||
Synonyms | D. macrophyllum | |
Name authority | Aiton: Hort. Kew. 2: 244. (1789) | A. Gray: Smithsonian Contr. Knowl. 5(6): 9. (1853) |
Web links |