Taxon Report

Gilia tenuiflora Benth. ssp. hoffmannii (Eastw.) A. & V. Grant

Hoffmann's slender-flowered gilia

Print Report

Taxon Summary

Gilia tenuiflora ssp. hoffmannii, commonly known as Hoffmann's slender-flowered gilia, is a annual herb in the Polemoniaceae that is found only in California. It occurs within Coastal dunes, and Coastal scrub, growing at elevations from 10 to 30 meters. Gilia tenuiflora ssp. hoffmannii is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Gilia tenuiflora Benth. ssp. hoffmannii (Eastw.) A. & V. Grant
Common Name:	Hoffmann's slender-flowered gilia
Family:	Polemoniaceae
Element Code:	PDPLM041P3
USDA Plants Symbol:	GITEH
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Apr-May	Apr-May
Elevation:	10-30 (35-100)
General Habitats:	Coastal dunes, Coastal scrub
Microhabitat:	Loam, Openings, Sandy
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G3G4T1
State Rank:	S1
State List:	None
Fed List:	FE
Other Status:	SB_CalBG/RSABG; SB_SBBG
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	3
Element Occurrence Ranks:
Excellent (A)	1
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	1
Unknown (U)	1

Location


California Endemic: True
California Counties and Islands: Name (Code)
Santa Barbara (SBA)
Quads: Name (Quad Code)
Santa Rosa Island East (3311988), Santa Rosa Island North (3312081)

Threat List Data from the CNDDB


Threat List Total:	2
EOs with Threat Listed:	Total EOs	% of EOs
	2	67 %
Erosion/runoff	1	33%
Non-native plant impacts	1	33%

Notes



Known from only three occurrences at East Pt., Skunk Pt., and near Carrington Pt. Threatened by feral herbivores, trampling, habitat alteration, and non-native plants. Potentially threatened by climate change. See Leaflets of Western Botany 2:283 (1940) for original description, and Aliso 3(3):247 (1956) for revised nomenclature.
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].