CNPS

CNPS Rare Plant Inventory

Species Details

Erigeron maniopotamicus

Mad River fleabane daisy

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Photo by ©2018 John Doyen max-height:128px; max-width:145px;
©2018 John Doyen 		Photo by ©2018 John Doyen max-height:128px; max-width:145px;
©2018 John Doyen 		Photo by ©2007 Dean Wm. Taylor, Ph.D. max-height:128px; max-width:145px;
©2007 Dean Wm. Taylor, Ph.D.

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:

Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G2?
State Rank:
 S2?
Other Status: USFS_S
CRPR Changes:
added to 1B on 2005-02-10
Add Date: 2005-01-01
Date Edited: 2021-12-09

Ecology and Life History

Lifeform: perennial herb
Blooming Period: May-Aug
Elevation:
1275 - 1500 meters
4185 - 4920 feet
General Habitat:
  • Lower montane coniferous forest
  • Meadows and seeps (openings, dry)
General Micro Habitat:
Micro Habitat:
  • Disturbed areas
  • Openings
  • Roadsides
  • Rocky

Notes

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:
Other:

Occurrence Data from the CNDDB

Total Occurrences: 10
Element Occurrence Ranks:
A B C D X U
0 3 1 0 0 6
Occurrence Status:
Historical >20 Years 2
Recent <=20 Years 8
Presence:
Presumed Extant 10
Possibly Extirpated 0
Presumed Extirpated 0

Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
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)
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
Print this Map
Counties   Quads

Selected References

CNPS Status Review: CRPR List Addition on 2005-02-10
Suggested Citation:
California Native Plant Society, Rare Plant Program. 2022. Rare Plant Inventory (online edition, v9-01 1.5). Website https://www.rareplants.cnps.org [accessed 17 May 2022].