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Delphinium nuttallianum Pritz. ex Walp.
Twolobe larkspur, Two-lobe larkspur, Delphinium
Synonym(s): Delphinium nelsonii, Delphinium nelsonii ssp. utahense, Delphinium nuttallianum var. fulvum, Delphinium nuttallianum var. levicaule, Delphinium sonnei
USDA Symbol: DENU2
USDA Native Status: L48 (N), CAN (N)
An extremely variable delphinium over its wide range. Stems are usually single, 6-30 in. tall and generally unbranched. Leaves are few and mostly basal, 2-4 times lobed into linear segments. Generally only 1 stem with a few leaves, mostly at base, and blue or blue-violet bilateral flowers in one or several open racemes. The flowering spikes are loosely flowered and ascending with white to grayish-blue to deep blue-purple, spurred flowers. The degree of pubescence is the most notable distinction among varieties.
Representative of a host of low larkspur species with blue or blue-violet flowers occurring in many habitats, from dry California grasslands and chaparral to southwestern deserts and high mountaintops. They are difficult to distinguish, and in the West are second only to locoweeds (Astragalus and Oxytropis) as a livestock poison, especially among cattle.
Plant CharacteristicsDuration: Perennial Habit: Herb Flower:
Fruit: Size Class:
Bloom InformationBloom Color: White , Blue , Purple
Bloom Time: Mar , Apr , May , Jun , Jul
, WY Canada: BC Native Distribution:
S.w. B.C., s., in the Cascade foothills, to CA,
e. to Alt., SD, NE, CO
& AZ Native Habitat:
Dry foothills, valleys & sagebrush deserts
Growing ConditionsLight Requirement: Sun
Soil Moisture: Dry
Soil Description: Dry, well-drained soils.
Plants of the genus
Delphinium contain toxins, and no parts of them should ever be eaten. They can be fatally poisonous to both humans and animals. POISONOUS PARTS: All parts. Highly Toxic; May be Fatal if eaten. Symptoms include burning of lips and mouth, numbness of throat; intense vomiting and diarrhea, muscular weakness and spasms, weak pulse, paralysis of the respiratory system, convulsions. Toxic Principle: Alkaloids delphinine, ajacine, and others. (Poisonous Plants of N.C.) Attracts:
PropagationDescription: Sow fresh seeds in fall for outdoor stratification.
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes
Mr. Smarty Plants says
Native grasses for medians in Colorado Springs
June 11, 2010
Our city has stopped watering our historic landscaped medians due to severe budget shortfalls. The medians were historically tree boulevards but have had curb and gutter and blue grass added over th...
view the full question and answer
National Wetland Indicator Status
|Status:|| FAC || FACU || FAC |
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Native Seed Network
- Corvallis, OR
Record Last Modified: 2013-06-21
Research By: TWC Staff