Delphinium exaltatum |
Delphinium glaucescens |
|
---|---|---|
tall larkspur |
glaucous larkspur, glaucus larkspur, smooth larkspur |
|
Stems | 70-200 cm; base reddish, nearly glabrous. |
35-70(-100) cm; base ± reddish, glabrous, glaucous. |
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 pentagonal to round, 2-9 × 3-14 cm, margins seldom laciniate, nearly glabrous; ultimate lobes 5-17, width 2-8 mm, tips abruptly tapered to mucronate apex; midcauline leaf lobes more than 3 times longer than wide. |
Inflorescences | 8-30-flowered; pedicel 0.5-2 cm, puberulent; bracteoles 2-4 mm from flowers, green, linear, 2-4 mm, puberulent. |
10-25-flowered; pedicel 0.5-1.5 cm, puberulent to glabrous; bracteoles 2-20 mm from flowers, green, linear, 3-8 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 to reflexed, 8-12 × 3-4 mm, spurs straight, ascending 40-90°, 9-13 mm; lower petal blades ± covering stamens, 3-5 mm, clefts 1-2 mm; hairs centered, mostly near base of cleft, white. |
Fruits | 7-12 mm, 2-2.5 times longer than wide, ± puberulent. |
7-13 mm, 3.4-4 times longer than wide, puberulent. |
Seeds | ± wing-margined; seed coat cells elongate, surfaces smooth. |
± wing-margined; seed coat cells narrow but short, surfaces smooth. |
Delphinium exaltatum |
Delphinium glaucescens |
|
Phenology | Flowering summer. | Flowering summer. |
Habitat | Rocky slopes in open deciduous woods and barrens, mainly on calcareous substrates, also shale and mafic and ultramafic rocks | Rocky slopes in subalpine coniferous woods |
Elevation | 150-2000 m (500-6600 ft) | 2000-4000 m (6600-13100 ft) |
Distribution |
AL; KY; MD; MO; NC; OH; PA; TN; VA; WV
|
ID; MT; WY
|
Discussion | Hybrids with Delphinium glaucum 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. Exaltata |
Sibling taxa | ||
Name authority | Aiton: Hort. Kew. 2: 244. (1789) | Rydberg: Mem. New York Bot. Gard. 1: 155. (1900) |
Web links |