Taxon Details

Erigeron blochmaniae

Blochman's leafy daisy

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Taxon Summary:

Erigeron blochmaniae, commonly known as Blochman's leafy daisy, is a perennial rhizomatous herb in the Asteraceae that is found only in California. It occurs within Coastal dunes, and Coastal scrub, growing at elevations from 3 to 45 meters. Erigeron blochmaniae is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Erigeron blochmaniae Greene
Common Name: Blochman's leafy daisy
Family:	Asteraceae
Element Code:	PDAST3M5J0
USDA Plants Symbol:	ERBL4
Synonyms/Other Names: Erigeron foliosus Nutt. var. blochmaniae (Greene) Hall
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	BLM_S; SB_SBBG
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: Jun-Aug

Elevation:
3 - 45 meters
10 - 150 feet

General Habitats:

Coastal dunes
Coastal scrub

Microhabitat Details:

Microhabitat:

Notes

Notes: Threatened by development, non-native plants, and vehicles. See Pittonia 3:27-28 (1896) for original description, and Phytologia 72(3):157-208 (1992) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	10
	Total EOs	% of EOs
EOs with Threat Listed:	11	31 %
Recreational use (non-ORV)	4	11%
Development	3	8%
ORV activity	3	8%
Other	2	5%
Non-native plant impacts	2	5%
Road/trail construction/maint.	2	5%
Agriculture	1	2%
Foot traffic/trampling	1	2%
Grazing	1	2%
Mining	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					36
A	B	C	D	X	U
1	2	2	1	0	30

Occurrence Status:
Historical >20 Years	26
Recent <=20 Years	10

Presence:
Presumed Extant	36
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
San Luis Obispo (SLO), Santa Barbara (SBA)

Quads: Name (Quad Code)
Casmalia (3412075), Guadalupe (3412085), Morro Bay North (3512047), Morro Bay South (3512037), Oceano (3512015), Pismo Beach (3512026), Point Sal (3412086), Santa Maria (3412084), Surf (3412065)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory