Taxon Details

Packera hesperia

western ragwort

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Taxon Summary:

Packera hesperia, commonly known as western ragwort, is a perennial herb in the Asteraceae that is found in California and elsewhere. It occurs within Meadows and seeps, and Upper montane coniferous forest, growing at elevations from 500 to 2500 meters. Packera hesperia is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Packera hesperia (Greene) W.A. Weber & A. Love
Common Name: western ragwort
Family:	Asteraceae
Element Code:	PDAST8H1L0
USDA Plants Symbol:	PAHE11
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S1
Other Status:	USFS_S
CRPR Changes: added to 2.2 on 2007-04-12
Add Date:	2007-04-12
Date Edited:	2022-08-02

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Apr-Jun

Elevation:
500 - 2500 meters
1640 - 8205 feet

General Habitats:

Meadows and seeps
Upper montane coniferous forest

Microhabitat Details:

Microhabitat:

Serpentine

Notes

Notes: Known only from the Siskiyou Mountains.
Threats: Possibly threatened by alteration of fire regimes, logging, and vehicles.
Taxonomy: A synonym of Senecio hesperius. Not in The Jepson Manual (1993).

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	4	100 %
Improper burning regime	4	100%
Logging	1	25%
ORV activity	1	25%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					4
A	B	C	D	X	U
4	0	0	0	0	0

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	4

Presence:
Presumed Extant	4
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Oregon (OR)

California Counties and Islands: Name (Code)
Del Norte (DNT)

Quads: Name (Quad Code)
Gasquet (4112378)

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 Status Review:	Proposed Addition to California Rare Plant Rank 2.2, G3 / S1.2
Original Description:	Pittonia 2: 166 (1891)
Revised Nomenclature:	Phytologia 49: 47 (1981)
Species Account:	Packera hesperia profile for potential Species of Conservation Concern evaluation (2018)
Other:	USFS Potential Species of Conservation Concern Profile

CNPS Rare Plant Inventory