Delphinium exaltatum |
Delphinium robustum |
|
---|---|---|
tall larkspur |
robust larkspur, wahatoya creek larkspur |
|
Stems | 70-200 cm; base reddish, nearly glabrous. |
100-200(-250) cm; base sometimes 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 round to pentagonal, 7-12 × 10-20 cm, nearly glabrous; ultimate lobes 5-15, width 6-30 mm, tips gradually 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. |
40-90(-180)-flowered; pedicel 0.5-2 cm, puberulent; bracteoles 4-6 mm from flowers, green to purple, linear, 5-8 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 bluish purple to pale lavender, nearly glabrous, lateral sepals ± forward pointing, 9-14 × 4-6 mm, spurs slightly decurved, 30-45° above horizontal, dark blue, 10-13 mm; lower petal blades ± covering stamens, 5-7 mm, clefts 2-3 mm; hairs centered, mostly on inner lobes near base of cleft, yellow to white. |
Fruits | 7-12 mm, 2-2.5 times longer than wide, ± puberulent. |
13-18 mm, 3-4 times longer than wide, puberulent. |
Seeds | ± wing-margined; seed coat cells elongate, surfaces smooth. |
wing-margined; seed coat cells elongate, surfaces smooth. |
Delphinium exaltatum |
Delphinium robustum |
|
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 | Riparian woodlands, subalpine meadows |
Elevation | 150-2000 m (500-6600 ft) | 2200-3000 m (7200-9800 ft) |
Distribution |
AL; KY; MD; MO; NC; OH; PA; TN; VA; WV
|
CO; NM |
Discussion | Of conservation concern. Delphinium robustum is the representative of the southern Cordilleran complex from the Jemez, San Antonio, San Juan, San Pedro, and Sangre de Cristo mountains. Hybrids are known with D. sapellonis. (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: Bull. Torrey Bot. Club 28: 276. (1901) |
Web links |