Delphinium nuttallii subsp. nuttallii(synonym of Delphinium oreganum) |
Delphinium viridescens |
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Willamette Valley larkspur |
Wenatchee larkspur |
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Stems | 40-70 cm. |
90-150 cm; base usually green, glabrous. |
Leaves | blade cuneate to semicircular, 2-5 × 3-12 cm, nearly glabrous; ultimate lobes 3-21, width 1-8 mm. |
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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. |
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Flowers | sepals blue or bluish purple, spurs 10-13 mm; lower petal blades 4.5-6.5 mm. |
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. |
Fruits | 8-11 mm, 2.5-3 times longer than wide, puberulent. |
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Seeds | ± wing-margined; seed coat cells with surfaces ± roughened. |
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2n | = 16. |
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Delphinium nuttallii subsp. nuttallii |
Delphinium viridescens |
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Phenology | Flowering late spring–early summer. | Flowering summer. |
Habitat | Rock outcrops, rocky meadows | Wet meadows and streamsides in coniferous forest, heavy clay soils |
Elevation | 20-300 m (100-1000 ft) | 500-1000 m (1600-3300 ft) |
Distribution |
OR; WA |
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.) |
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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. Multiplex |
Sibling taxa | ||
Name authority | unknown | Leiberg: Proc. Biol. Soc. Wash. 11: 39. (1897) |
Web links |