Delphinium bicolor |
Delphinium exaltatum |
|||||
---|---|---|---|---|---|---|
Flathead larkspur, little larkspur, low larkspur, Montana larkspur |
tall larkspur |
|||||
Stems | 10-40(-70) cm; base often reddish, glabrous to puberulent. |
70-200 cm; base reddish, nearly glabrous. |
||||
Leaves | blade round, 1-4 × 1.5-7 cm, glabrous to puberulent; ultimate lobes 3-19, width 1-8 mm (basal), 1-3 mm (cauline). |
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. |
||||
Inflorescences | 3-12(-22)-flowered; pedicel 1-4(-8) cm, ± puberulent; bracteoles 2-7(-17) mm from flowers, green, sometimes white-margined, lanceolate, 4-6(-8) mm, puberulent. |
8-30-flowered; pedicel 0.5-2 cm, puberulent; bracteoles 2-4 mm from flowers, green, linear, 2-4 mm, puberulent. |
||||
Flowers | sepals dark blue, puberulent, lateral sepals usually spreading, 16-21 × 6-12 mm, spurs straight to gently decurved, ascending 0-40° above horizontal, 13-23 mm; lower petal blades covering stamens, 7-12 mm, clefts 0.1-3 mm; hairs sparse, short, mostly on inner lobes below junction of blade and claw, white or yellow. |
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. |
||||
Fruits | (12-)16-22 mm, 4-4.5 times longer than wide, usually puberulent. |
7-12 mm, 2-2.5 times longer than wide, ± puberulent. |
||||
Seeds | often winged; seed coat cells with surfaces ± smooth. |
± wing-margined; seed coat cells elongate, surfaces smooth. |
||||
Delphinium bicolor |
Delphinium exaltatum |
|||||
Phenology | Flowering summer. | |||||
Habitat | Rocky slopes in open deciduous woods and barrens, mainly on calcareous substrates, also shale and mafic and ultramafic rocks | |||||
Elevation | 150-2000 m (500-6600 ft) | |||||
Distribution |
ID; MT; ND; NE; SD; WY; AB; BC; SK
|
AL; KY; MD; MO; NC; OH; PA; TN; VA; WV
|
||||
Discussion | Subspecies 2 (2 in the flora). Delphinium bicolor is closely related to D. glareosum; it differs in its wider-lobed cauline leaves, shallower petal clefts, and narrower fruits. The Gosiute consider this plant to be poisonous (D. E. Moerman 1986, subspecies not specified). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|||||
Key |
|
|||||
Source | FNA vol. 3. | FNA vol. 3. | ||||
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Bicoloria | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Exaltata | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | Nuttall: J. Acad. Nat. Sci. Philadelphia 7: 10. (1834) | Aiton: Hort. Kew. 2: 244. (1789) | ||||
Web links |