Taxon Report

Ageratina shastensis (D.W. Taylor & Steb.) R.M. King & H. Robinson

Shasta ageratina

Print Report


©2011 Sierra Pacific Industries

  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.

Ecology and Life History
Lifeform: perennial herb
Blooming Period: Jun-Oct Jun-Oct
Elevation: 400-1800 (1310-5905)
General Habitats: Chaparral, Lower montane coniferous forest
Microhabitat: Carbonate (often), Rocky
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 1B.2
Global Rank: G3
State Rank:
 S3
State List: None
Fed List: None
Other Status: SB_UCSC
CRPR Changes:
  • changed from 4.2 to 1B.2 on 2008-10-14

Occurrence Data from the CNDDB
Total Occurrences: 27
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 20
   Fair (C) 2
   Poor (D) 0
   None (X) 0
   Unknown (U) 5

Location
California Endemic:  True
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)

Threat List Data from the CNDDB

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

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

Selected References

Proposed Change from California Rare Plant Rank 4.2 to 1B.2 (2008)
Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 January 2025].