Delphinium exaltatum |
Delphinium lineapetalum |
|
---|---|---|
tall larkspur |
thinpetal larkspur |
|
Stems | 70-200 cm; base reddish, nearly glabrous. |
(15-)30-60 cm; base usually reddish, glabrous to 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, 1-5 × 2-6 cm, glabrous; ultimate lobes 5-16, width 1-4 mm (basal), 0.5-3 mm (cauline). |
Inflorescences | 8-30-flowered; pedicel 0.5-2 cm, puberulent; bracteoles 2-4 mm from flowers, green, linear, 2-4 mm, puberulent. |
(3-)9-24(-40)-flowered, pyramidal; pedicel spreading, 1-2.5 cm, glabrous or glandular-puberulent; bracteoles 4-7 mm from flowers, blue or green, linear, 1-3 mm, glabrous or glandular-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 light blue to lavender, nearly glabrous, lateral sepals reflexed, 10-13 × 3-5 mm, spurs straight to slightly decurved, nearly horizontal to ascending ca. 30°, 11-17 mm; lower petal blades elevated, exposing stamens, 3-5 mm, clefts 0.5-2 mm; hairs centered mostly on inner lobes near base of cleft, white. |
Fruits | 7-12 mm, 2-2.5 times longer than wide, ± puberulent. |
13-21 mm, 4-4.5 times longer than wide, puberulent to glabrous. |
Seeds | ± wing-margined; seed coat cells elongate, surfaces smooth. |
seed coat cells narrow, short, cell margins straight, surfaces smooth. |
Delphinium exaltatum |
Delphinium lineapetalum |
|
Phenology | Flowering summer. | Flowering spring. |
Habitat | Rocky slopes in open deciduous woods and barrens, mainly on calcareous substrates, also shale and mafic and ultramafic rocks | Open pine woods, dry meadows |
Elevation | 150-2000 m (500-6600 ft) | 400-1800 m (1300-5900 ft) |
Distribution |
AL; KY; MD; MO; NC; OH; PA; TN; VA; WV
|
WA
|
Discussion | Of conservation concern. (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. Subscaposa |
Sibling taxa | ||
Synonyms | D. nuttallianum var. lineapetalum | |
Name authority | Aiton: Hort. Kew. 2: 244. (1789) | Ewan: Univ. Colorado Stud., Ser. D, Phys. Sci. 2: 126. (1945) |
Web links |