FNA: Delphinium oreganum

	Delphinium nuttallii subsp. nuttallii (synonym of Delphinium oreganum)
	Willamette Valley larkspur
Stems	40-70 cm.
Flowers	sepals blue or bluish purple, spurs 10-13 mm; lower petal blades 4.5-6.5 mm.
2n	= 16.

	Delphinium nuttallii subsp. nuttallii
Phenology	Flowering late spring–early summer.
Habitat	Rock outcrops, rocky meadows
Elevation	20-300 m (100-1000 ft)
Distribution	OR; WA
Source	FNA vol. 3.
Parent taxa	Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Grumosa > Delphinium nuttallii
Sibling taxa	D. nuttallii subsp. nuttallii, D. nuttallii subsp. ochroleucum
Name authority	unknown
Web links	Local floras: OR Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

(synonym of Delphinium oreganum)

Willamette Valley larkspur

Stems

40-70 cm.

Flowers

sepals blue or bluish purple, spurs 10-13 mm;

lower petal blades 4.5-6.5 mm.

= 16.

Phenology

Flowering late spring–early summer.

Habitat

Rock outcrops, rocky meadows

Elevation

20-300 m (100-1000 ft)

Distribution

OR; WA

Source

Parent taxa

Sibling taxa

Name authority

unknown

Web links

Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).

Choose a data source: OregonFlora

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