Species Details

Pyrrocoma racemosa var. congesta

Del Norte pyrrocoma

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Photo of Pyrrocoma racemosa var. congesta
©2008 Keir Morse
Scientific Name:
Pyrrocoma racemosa (Nutt.) T. & G. var. congesta (Greene) G. Brown & Keil
Common Name:
Del Norte pyrrocoma
Family: Asteraceae
Element Code: PDASTDT0F4
USDA Plants Symbol: PYRAC2
Synonyms/Other Names:
CA Rare Plant Rank: 2B.3
Fed List: None
State List: None
Global Rank: G5T4
State Rank:
Other Status:
CRPR Changes:
changed from 2.3 to 2B.3 on 2013-06-12
Add Date: 1980-01-01
Date Edited: 2022-08-02
Lifeform: perennial herb
Blooming Period: Aug-Sep
200 - 1000 meters
655 - 3280 feet
General Habitats:
  • Chaparral
  • Lower montane coniferous forest
Microhabitat Details:
  • Serpentinite
Total Occurrences: 13
Element Occurrence Ranks:
0 0 0 0 0 13
Occurrence Status:
Historical >20 Years 13
Recent <=20 Years 0
Presumed Extant 13
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA), Oregon (OR)
California Counties and Islands: Name (Code)
Del Norte (DNT)
Quads: Name (Quad Code)
Crescent City (4112472), Gasquet (4112378), High Divide (4112481), High Plateau Mtn. (4112388), Hiouchi (4112471), Shelly Creek Ridge (4112387), Sister Rocks (4112462)
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.
Presumed Extant
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Original Description: Pittonia 3:23 (1898)
Revised Nomenclature: Phytologia 73(1):57-58 (1992)
Species Account: Pyrrocoma racemosa var. congesta profile for potential Species of Conservation Concern evaluation (2018)
Other: USFS Potential Species of Conservation Concern Profile