Home/Species/ Umbrella Larkspur

Delphinium umbraculorum

Lewis & Epling

Umbrella Larkspur

G3Vulnerable Found in 9 roadless areas NatureServe Explorer →

G3VulnerableGlobal Rank

MediumThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.160281

Element CodePDRAN0B1W0

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderRanunculales

FamilyRanunculaceae

GenusDelphinium

Concept Reference

Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

Conservation Status

Rank MethodLegacy Rank calculation - Excel v3.1x

Review Date2017-04-25

Change Date2017-04-25

Edition Date2017-11-01

Edition AuthorsOliver, L.(2002), rev. Treher and Bittman (2017)

Threat ImpactMedium

Range Extent20,000-200,000 square km (about 8000-80,000 square miles)

Number of Occurrences21 - 80

Rank Reasons

Delphinium umbraculorum is endemic to southern California. There are 69 element occurrences, but 42 of them are historical. They need to be surveyed to confirm plants and habitat are extant at the historical sites. The species is possibly threatened by non-native plants and grazing. Hickman (1993) notes that D. umbraculorum hybridizes with D. parryi.

Range Extent Comments

Endemic to southern California and is known from Kern, Monterey, Santa Barbara, San Luis Obispo and Ventura Counties.

Occurrences Comments

There are 69 element occurrences, but 42 of them are historical. They need to be surveyed to confirm plants and habitat are extant at the historical sites.

Threat Impact Comments

Grazing and competition with non-native species threaten many sites.

Ecology & Habitat

Habitat

Usually shady, occasionally sunny, slopes; often in moist, loose soil derived from disintegrating shale. Found within Oak Forest and Foothill/Cismontane Woodland communities. 400 - 1600 m.

Terrestrial Habitats

Forest/WoodlandWoodland - HardwoodWoodland - MixedAlpine

Other Nations (1)

United StatesN3

Province	Rank	Native
California	S3	Yes

Threat Assessments

Threat	Scope	Severity	Timing
2 - Agriculture & aquaculture	—	—	—
2.3 - Livestock farming & ranching	—	—	—
8 - Invasive & other problematic species, genes & diseases	—	—	—
8.1 - Invasive non-native/alien species/diseases	—	—	—

Plant Characteristics

DurationPERENNIAL

Economic Value (Genus)No

Roadless Areas (9)

California (9)

Area	Forest	Acres
De La Guerra	Los Padres National Forest	5,418
Garcia Mountain	Los Padres National Forest	7,850
Lpoor Canyon	Los Padres National Forest	13,762
Manzana	Los Padres National Forest	2,101
Matilija	Los Padres National Forest	5,218
Santa Cruz	Los Padres National Forest	21,182
Stanley Mountain	Los Padres National Forest	14,674
Tequepis	Los Padres National Forest	9,080
White Ledge	Los Padres National Forest	18,632

References (7)

CalFlora. 2005. Information on California plants for education, research and conservation. Berkeley, California: The CalFlora Database [web application]. Available: http://www.calflora.org/. (Accessed 2005)
California Native Plant Society (CNPS). 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x + 388pp.
Flora of North America Editorial Committee (FNA). 1997. Flora of North America north of Mexico. Vol. 3. Magnoliophyta: Magnoliidae and Hamamelidae. Oxford Univ. Press, New York. xxiii + 590 pp.
Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
Hoover, R.F. 1970. The vascular plants of San Luis Obispo County, California. Univ. California Press, Berkeley. 350 pp.
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Munz, P.A., with D.D. Keck. 1959. A California flora. Univ. California Press, Berkeley. 1681 pp.

Delphinium umbraculorum

Habitat

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