Taxon Report

Erigeron maniopotamicus G.L. Nesom & T.W. Nelson

Mad River fleabane daisy

Print Report


©2018 John Doyen

  Classification
Scientific Name:
 Erigeron maniopotamicus G.L. Nesom & T.W. Nelson
Common Name:
 Mad River fleabane daisy
Family: Asteraceae
Element Code: PDASTE1050
USDA Plants Symbol: ERMA19
Synonyms/Other Names:

Ecology and Life History
Lifeform: perennial herb
Blooming Period: May-Aug May-Aug
Elevation: 1275-1500 (4185-4920)
General Habitats: Lower montane coniferous forest, Meadows and seeps
Microhabitat: Disturbed areas, Openings, Roadsides, Rocky
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 1B.2
Global Rank: G2?
State Rank:
 S1S2
State List: None
Fed List: None
Other Status: BLM_S; SB_UCSC; USFS_S
CRPR Changes:
  • added to 1B on 2005-02-10

Occurrence Data from the CNDDB
Total Occurrences: 10
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 3
   Fair (C) 1
   Poor (D) 0
   None (X) 0
   Unknown (U) 6

Location
California Endemic:  True
California Counties and Islands: Name (Code)
Humboldt (HUM), Trinity (TRI)
Quads: Name (Quad Code)
Board Camp Mtn. (4012366), Dinsmore (4012345), Lake Mountain (4012314), Zenia (4012324)

Threat List Data from the CNDDB

Threat List Total: 5
EOs with Threat Listed: Total EOs % of EOs
9 90 %
Road/trail construction/maint. 6 60%
Logging 5 50%
Grazing 2 20%
ORV activity 1 10%
Other 1 10%

Notes
Known from widely disjunct locations in east-central HUM Co. and adjacent TRI Co. Potentially threatened by road maintenance, road construction, grazing, and logging. Not in TJM (1993). See SIDA 21(2): 673 (2004) for original description.
Threats:
Taxonomy:

Selected References

CRPR List Addition on 2005-02-10
USFS Potential Species of Conservation Concern Profile
Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 1 January 2025].