Delphinium nuttallii subsp. nuttallii(synonym of Delphinium oreganum) |
Delphinium alabamicum |
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Willamette Valley larkspur |
Alabama larkspur |
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Stems | 40-70 cm. |
(45-)60-90(-130) cm; base reddish, pubescent. |
Leaves | blade reniform to semicircular, 2-11 × 3-19 cm, nearly glabrous; ultimate lobes 3-35, width 3-8 mm (basal), 0.5-3 mm (cauline), widest at middle or in proximal 1/2. |
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Inflorescences | 5-27-flowered; pedicel 1-5 cm, puberulent; bracteoles 3-12 mm from flowers, green, linear, 2-8 mm, puberulent. |
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Flowers | sepals blue or bluish purple, spurs 10-13 mm; lower petal blades 4.5-6.5 mm. |
sepals royal blue, ± drab, often partly fading upon drying, puberulent, lateral sepals spreading, 12-20 × 5-10 mm, spurs straight, horizontal to slightly ascending, (13-)15-16.5(-19) mm; lower petal blades ± covering reproductive parts, 4-10 mm, clefts 3-5 mm; hairs centered between claw and base of cleft, covering most of adaxial surface, white. |
Fruits | 11-18 mm, 2.5-3 times longer than wide, sparsely puberulent. |
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Seeds | unwinged; surface of each seed coat cell with with swollen, blunt, hairlike structures, barely visible at 20x, otherwise smooth. |
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2n | = 16. |
= 16. |
Delphinium nuttallii subsp. nuttallii |
Delphinium alabamicum |
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Phenology | Flowering late spring–early summer. | Flowering mid-late spring. |
Habitat | Rock outcrops, rocky meadows | Very local, thin soils in and on edges of Juniperus glades on limestone substrates |
Elevation | 20-300 m (100-1000 ft) | 100-300 m (300-1000 ft) |
Distribution |
OR; WA |
AL; GA
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Discussion | Of conservation concern. In addition to the Alabama sites, Delphinium alabamicum is known from one population in Georgia; it might have been transplanted there. Delphinium alabamicum has not been seen in central Alabama since 1950; populations there might have been extirpated. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Grumosa > Delphinium nuttallii | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Grumosa |
Sibling taxa | ||
Name authority | unknown | Kral: Sida 6: 250. (1976) |
Web links |