Delphinium exaltatum |
Delphinium hutchinsoniae |
|
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tall larkspur |
Hutchinson's delphinium, Hutchinson's larkspur, Monterey larkspur |
|
Stems | 70-200 cm; base reddish, nearly glabrous. |
(25-)50-80(-100) cm; base reddish, not longitudinally ridged, variably puberulent. |
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, 1-6 × 1.5-10 cm, puberulent; ultimate lobes 3-17, width 4-16(-25) mm (basal), 1-8(-19) mm (cauline). |
Inflorescences | 8-30-flowered; pedicel 0.5-2 cm, puberulent; bracteoles 2-4 mm from flowers, green, linear, 2-4 mm, puberulent. |
(2-)7-20(-31)-flowered, open; pedicel 1-4(-6) cm, puberulent; bracteoles (2-)8-12 mm from flowers, green, linear, 3-6(-9) 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 dark bluish purple, puberulent, lateral sepals spreading, (12-)14-19(-24) × 7-12(-15) mm, spurs ascending, decurved apically, 11-19 mm; lower petal blades slightly elevated, mostly covering stamens, 5-10 mm, cleft 2-3 mm; hairs sparse, mostly on inner lobes, absent on margins, white. |
Fruits | 7-12 mm, 2-2.5 times longer than wide, ± puberulent. |
9-21 mm, 2.5-4.2 times longer than wide, sparsely puberulent. |
Seeds | ± wing-margined; seed coat cells elongate, surfaces smooth. |
not echinate, ± smooth to naked eye; seed coat cells with margins ± undulate, surfaces smooth. |
Delphinium exaltatum |
Delphinium hutchinsoniae |
|
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 | Coastal chaparral, clearings in coniferous woods |
Elevation | 150-2000 m (500-6600 ft) | 0-400 m (0-1300 ft) |
Distribution |
AL; KY; MD; MO; NC; OH; PA; TN; VA; WV
|
CA |
Discussion | Of conservation concern. Delphinium hutchinsoniae is known from only a few populations near Monterey and south to the Big Sur region. Hybrids have been produced between D. hutchinsoniae and D. cardinale grown in a common garden. Hybrids also occur with D. parryi subsp. maritimum. Delphinium hutchinsoniae is similar, and probably closely related, to D. variegatum. The two may be distinguished by the decurved spur of D. hutchinsoniae; the spur of D. variegatum is normally straight (or decurved nearer apex). Delphinium hutchinsoniae lacks marginal hairs on lower petals; such hairs are present in D. variegatum. The two species are also geographically separated. (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. Echinata |
Sibling taxa | ||
Name authority | Aiton: Hort. Kew. 2: 244. (1789) | Ewan: Bull. Torrey Bot. Club 78: 379. (1951) |
Web links |