Taxon Details

Pyrrocoma racemosa var. congesta

Del Norte pyrrocoma

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Photo of Pyrrocoma racemosa var. congesta
©2008 Keir Morse

Taxon Summary:

Pyrrocoma racemosa var. congesta, commonly known as Del Norte pyrrocoma, is a perennial herb in the Asteraceae that is found in California and elsewhere. It occurs within Chaparral, and Lower montane coniferous forest, growing at elevations from 200 to 1000 meters. Pyrrocoma racemosa var. congesta is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Lifeform: perennial herb
Blooming Period: Aug-Sep
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Elevation:
200 - 1000 meters
655 - 3280 feet
General Habitats:
  • Chaparral
  • Lower montane coniferous forest
Microhabitat Details:
Microhabitat:
  • Serpentine
Total Occurrences: 13
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 13
Occurrence Status:
Historical >20 Years 13
Recent <=20 Years 0
Presence:
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)
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.
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

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