Taxon Report

Senecio blochmaniae E. Greene

Blochman's ragwort

Print Report

Taxon Summary

Senecio blochmaniae, commonly known as Blochman's ragwort, is a perennial herb in the Asteraceae that is found only in California. It occurs within Coastal dunes, growing at elevations from 0 to 100 meters. Senecio blochmaniae is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.

Classification


Scientific Name:	Senecio blochmaniae E. Greene
Common Name:	Blochman's ragwort
Family:	Asteraceae
Element Code:	PDAST8H0G0
USDA Plants Symbol:	SEBL
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: May-Oct	May-Oct
Elevation:	0-100 (0-330)
General Habitats:	Coastal dunes
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.2
Global Rank:	G3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:	SB_CalBG/RSABG
CRPR Changes:

Occurrence Data from the CNDDB


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

Location


California Endemic: True
California Counties and Islands: Name (Code)
San Luis Obispo (SLO), Santa Barbara (SBA)
Quads: Name (Quad Code)
Casmalia (3412075), Lompoc (3412064), Morro Bay South (3512037), Oceano (3512015), Orcutt (3412074), Pismo Beach (3512026), Point Conception (3412044), Point Sal (3412086), Santa Maria (3412084), Surf (3412065)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

Notes



Threatened by non-native plants, development, and vehicles. See Erythea 1:7 (1893) for original description.
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 18 September 2025].