Species Details

Ageratina shastensis

Shasta ageratina

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Classification

Scientific Name: Ageratina shastensis (D.W. Taylor & Steb.) R.M. King & H. Robinson
Common Name: Shasta ageratina
Family:	Asteraceae
Element Code:	PDASTBX0R0
USDA Plants Symbol:	AGSH2
Synonyms/Other Names: Eupatorium shastense D.W. Taylor & Stebb.

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S3
Other Status:	SB_UCSC
CRPR Changes: changed from 4.2 to 1B.2 on 2008-10-14
Add Date:	1974-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jun-Oct

Elevation:
400 - 1800 meters
1310 - 5905 feet

General Habitats:

Chaparral
Lower montane coniferous forest

Microhabitat Details:

Microhabitat:

Carbonate (often)
Rocky

Notes

Notes: Threatened by mining. See Madroño 25(4):218-220 (1978) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	8	30 %
Logging	5	18%
Road/trail construction/maint.	5	18%
Recreational use (non-ORV)	1	3%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					27
A	B	C	D	X	U
0	20	2	0	0	5

Occurrence Status:
Historical >20 Years	6
Recent <=20 Years	21

Presence:
Presumed Extant	27
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Shasta (SHA)

Quads: Name (Quad Code)
Bollibokka Mtn. (4012282), Devils Rock (4012271), Goose Gap (4012281), Hanland Peak (4012283), Lake McCloud (4112221), O'Brien (4012273), Shoeinhorse Mtn. (4112211), Tombstone Mtn. (4112213), Yellowjacket Mtn. (4112212)

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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Selected References

CNPS Status Review:

Proposed Change from California Rare Plant Rank 4.2 to 1B.2 (2008)