Delphinium distichum |
Delphinium hutchinsoniae |
|
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Burke's larkspur, meadow larkspur, strict larkspur, two-spike larkspur |
Hutchinson's delphinium, Hutchinson's larkspur, Monterey larkspur |
|
Stems | (25-)30-60(-80) cm; base sometimes reddish, puberulent. |
(25-)50-80(-100) cm; base reddish, not longitudinally ridged, variably puberulent. |
Leaves | blade cuneate to semicircular, 1-5 × 1.5-7 cm, puberulent; ultimate lobes 5-19, width 2-8(-15) mm (basal), 0.5-3(-5) mm (cauline); margins of basal leaf, measured less than 1 cm from blade base, demarcating considerably more than 90° of arc when leaf laid flat; most cauline leaf blades exceeding internodes. |
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(-40)-flowered, usually dense; pedicel 0.5-1.5 cm, puberulent; bracteoles 0-3 mm from flowers, green to blue, linear, 4-8 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 dark blue to bluish purple, puberulent, lateral sepals ± erect, 8-12 × 3.5-5 mm, spurs straight, horizontal or nearly so, 9-15 mm; lower petal blades ± covering stamens, 4.5-6.5 mm, clefts 2-3 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 | 7-13 mm, 3.5-4 times longer than wide, ± puberulent. |
9-21 mm, 2.5-4.2 times longer than wide, sparsely puberulent. |
Seeds | seed coat cells with surfaces roughened. |
not echinate, ± smooth to naked eye; seed coat cells with margins ± undulate, surfaces smooth. |
2n | = 16. |
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Delphinium distichum |
Delphinium hutchinsoniae |
|
Phenology | Flowering late spring–early summer. | Flowering spring. |
Habitat | Wet meadows | Coastal chaparral, clearings in coniferous woods |
Elevation | 100-2400 m (300-7900 ft) | 0-400 m (0-1300 ft) |
Distribution |
ID; MT; OR; WA; WY; BC
|
CA |
Discussion | Delphinium distichum hybridizes with D. multiplex and D. nuttallianum (D. ×diversicolor Rydberg). The name D. burkei has often been misapplied to D. distichum. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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. Depauperata | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Echinata |
Sibling taxa | ||
Synonyms | D. strictum var. distichiflorum | |
Name authority | Geyer ex Hooker: J. Bot. 6: 68. (1847) | Ewan: Bull. Torrey Bot. Club 78: 379. (1951) |
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