Taxon Report

Delphinium parryi Gray ssp. blochmaniae (Greene) Lewis & Epl.

dune larkspur

Print Report

Taxon Summary

Delphinium parryi ssp. blochmaniae, commonly known as dune larkspur, is a perennial herb in the Ranunculaceae that is found only in California. It occurs within Chaparral (maritime), and Coastal dunes, growing at elevations from 0 to 200 meters. Delphinium parryi ssp. blochmaniae is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Delphinium parryi Gray ssp. blochmaniae (Greene) Lewis & Epl.
Common Name:	dune larkspur
Family:	Ranunculaceae
Element Code:	PDRAN0B1B1
USDA Plants Symbol:	DEPAB
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Apr-Jun	Apr-Jun
Elevation:	0-200 (0-655)
General Habitats:	Chaparral, Coastal dunes
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.2
Global Rank:	G4T2
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	BLM_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	27
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	2
Fair (C)	4
Poor (D)	1
None (X)	0
Unknown (U)	20

Location


California Endemic: True
California Counties and Islands: Name (Code)
San Luis Obispo (SLO), Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
Arroyo Grande NE (3512025), Casmalia (3412075), Lompoc (3412064), Lompoc Hills (3412054), Los Alamos (3412063), Morro Bay North (3512047), Morro Bay South (3512037), Oceano (3512015), Orcutt (3412074), Pico Creek (3512152), Pismo Beach (3512026), Point Sal (3412086), San Simeon (3512162), Santa Maria (3412084), Surf (3412065), Thousand Oaks (3411827), Tranquillon Mtn. (3412055)

Threat List Data from the CNDDB


Threat List Total:	5
EOs with Threat Listed:	Total EOs	% of EOs
	7	26 %
Non-native plant impacts	4	14%
Development	2	7%
ORV activity	1	3%
Other	1	3%
Road/trail construction/maint.	1	3%

Notes



Field work needed. Threatened by development.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 9 May 2025].