Delphinium viridescens |
Delphinium nuttallii |
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Wenatchee larkspur |
Nuttall's larkspur, upland larkspur |
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Stems | 90-150 cm; base usually green, glabrous. |
20-60(-90) cm; base usually reddish, pubescent. |
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Leaves | blade cuneate to semicircular, 2-5 × 3-12 cm, nearly glabrous; ultimate lobes 3-21, width 1-8 mm. |
blade round to reniform, 2-8 × 3-14 cm, pubescent; ultimate lobes 5-18, width 4-7 mm (basal), 1-5 mm (cauline), widest at middle or in proximal 1/2. |
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Inflorescences | 25-80-flowered, dense; pedicel 0.5-2 cm, glandular-pubescent; bracteoles 1-4 mm from flowers, green, lanceolate, 3.5-6 mm, glandular-pubescent. |
5-25(-40)-flowered, at least 2 times longer than wide; pedicel 1.5-4(-9) cm, puberulent; bracteoles 2-3 mm from flowers, green, linear, 4-6 mm, puberulent. |
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Flowers | sepals yellowish green, nearly glabrous, lateral sepals forward pointing, 7-9 × 3-4 mm, spurs decurved, 30-45° below horizontal, often hooked apically, 8-11 mm; lower petal blades ± covering stamens, 4-6 mm, clefts 0.5-1.5 mm; hairs centered, mostly near junction of blade and claw, yellow. |
sepals bluish purple to yellowish, (± drab), often partly fading upon drying, puberulent, lateral sepals ± spreading, 8-11 × 3-6 mm, spurs straight, slightly ascending, 9-13 mm; lower petal blades ± covering stamens, 4-6 mm, clefts 0.5-2 mm; hairs well dispersed, mostly near margins and base of cleft, white to yellow or blue. |
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Fruits | 8-11 mm, 2.5-3 times longer than wide, puberulent. |
10-14(-18) mm, 3.5-4 times longer than wide, pubescent. |
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Seeds | ± wing-margined; seed coat cells with surfaces ± roughened. |
wing-margined; seed coat cell surfaces smooth. |
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Delphinium viridescens |
Delphinium nuttallii |
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Phenology | Flowering summer. | |||||
Habitat | Wet meadows and streamsides in coniferous forest, heavy clay soils | |||||
Elevation | 500-1000 m (1600-3300 ft) | |||||
Distribution |
WA
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OR; WA
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Discussion | Of conservation concern. Delphinium viridescens is local in mountains southwest of Wenatchee, Washington. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 2 (2 in the flora). Delphinium nuttallii has often been confused with D. menziesii; it may be distinguished by consistently smaller flowers and usually more flowers per plant than in the latter. Interestingly, each species produces both blue-purple and yellowish flower colors, in separate populations. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 3. | FNA vol. 3. | ||||
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Multiplex | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Grumosa | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | Leiberg: Proc. Biol. Soc. Wash. 11: 39. (1897) | A. Gray: Bot. Gaz. 12: 54. (1887) | ||||
Web links |