Casey's Larkspur
CR

Casey's Larkspur

Delphinium caseyi

UnknownCREUCREU

Photo: Photo: (c) Sami Tamson, some rights reserved (CC BY-NC), uploaded by Sami Tamson

Overview

Delphinium caseyi, also known as Casey's larkspur, is a flowering plant within the family Ranunculaceae.

Delphinium caseyi faces severe threats from habitat destruction due to urban development and agricultural expansion in its limited California range. The species is particularly vulnerable to invasive plant species that outcompete it for resources and alter soil chemistry. Climate change poses an additional threat through altered precipitation patterns and increased drought frequency, which directly impacts this moisture-dependent perennial herb.

Threat summary

Habitat

Delphinium caseyi inhabits grasslands, oak woodlands, and chaparral margins in coastal California, typically growing in well-drained soils on slopes and hillsides. The species requires specific soil conditions and moisture regimes found in Mediterranean climate zones with cool, wet winters and dry summers.

Shrubland· majorRocky areas· major

Conservation measures underway

Site/area protectionSpecies recoverySpecies reintroductionEx-situ conservationLegislation

Other threatened species in RANUNCULACEAE

EN

Krapfia macropetala

Unknown
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Nigella stricta

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Graham's Columbine

Aquilegia grahamii

Unknown
CR

Callianthemum kernerianum

Stable

Threatened in Cyprus

VU

Gollumia torumbilicata

Unknown
Blind SnailVU

Blind Snail

Cecilioides acicula

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Andrena chaetogastra

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Giant Noctule

Nyctalus lasiopterus

Declining

Frequently asked questions

Why is Casey's Larkspur classified as Critically Endangered?
Casey's Larkspur is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Delphinium caseyi faces severe threats from habitat destruction due to urban development and agricultural expansion in its limited California range. The species is particularly vulnerable to invasive plant species that outcompete it for resources and alter soil chemistry. Climate change poses an additional threat through altered precipitation patterns and increased drought frequency, which directly impacts this moisture-dependent perennial herb.
Where does Casey's Larkspur live?
Casey's Larkspur occurs in Cyprus. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Casey's Larkspur?
The main threats to Casey's Larkspur are 12.1, 2.3, 6.2, and ai-1. The full IUCN-classified threat record for this species is detailed on the species page.

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