CNPS

CNPS Rare Plant Inventory



Taxon Details

Silene hookeri

Hooker's catchfly

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Photo of Silene hookeri
©2014 John Doyen 		Photo of Silene hookeri
©2016 Keir Morse 		Photo of Silene hookeri
© 1995 Saint Mary's College of California

Taxon Summary:

Silene hookeri, commonly known as Hooker's catchfly, is a perennial herb in the Caryophyllaceae that is found in California and elsewhere. It occurs within Chaparral, Cismontane woodland, and Lower montane coniferous forest, growing at elevations from 150 to 1260 meters. Silene hookeri is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

  Classification

Scientific Name:
Silene hookeri Nutt.
Common Name:
Hooker's catchfly
Family: Caryophyllaceae
Element Code: PDCAR0U2M0
USDA Plants Symbol: SIHO
Synonyms/Other Names:
Name Status: JEF, FNA, POWO,
IPNI, Tropicos

  Conservation Status

CA Rare Plant Rank: 2B.2
Fed List: None
State List: None
Global Rank: G4
State Rank:
 S2
Other Status:
CRPR Changes:
added to 2B.2 on 2021-07-30
Add Date: 2021-07-30
Date Edited: 2025-07-01

  Ecology and Life History

Lifeform: perennial herb
Blooming Period: (Mar)May-Jul
JFMAMJJASOND
Elevation:
150 - 1260 meters
490 - 4135 feet
General Habitats:
  • Chaparral
  • Cismontane woodland
  • Lower montane coniferous forest
Microhabitat Details: Often in grassy openings.
Microhabitat:
  • Openings (often)
  • Rocky (sometimes)
  • Serpentine (sometimes)
  • Slopes (sometimes)

  Notes

Notes:
Threats:
Potentially threatened by logging. Possibly threatened by vegetation/fuels management.
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 2
Total EOs % of EOs
EOs with Threat Listed: 2 6 %
THREAT LIST:
Other 1 3%
Wood cutting or brush clearing 1 3%

  Occurrence Data from the CNDDB

Total Occurrences: 31
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 31
Occurrence Status:
Historical >20 Years 10
Recent <=20 Years 21
Presence:
Presumed Extant 31
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA), Oregon (OR)
California Counties and Islands: Name (Code)
Del Norte (DNT), Humboldt (HUM), Mendocino (MEN), Siskiyou (SIS), Trinity (TRI)
Quads: Name (Quad Code)
Carberry Creek (4212312), Takilma (4212315), Bark Shanty Gulch (4112345), Broken Rib Mtn. (4112386), Brushy Mtn. (3912352), Clear Creek (4112364), Dillon Mtn. (4112355), Dubakella Mtn. (4012342), Forest Glen (4012333), Gasquet (4112378), Hiouchi (4112471), Huckleberry Mtn. (4112363), Jamison Ridge (3912362), Naufus Creek (4012343), Orleans (4112335), Polar Bear Mtn. (4112385), Somes Bar (4112344), Thompson Peak (4112311), Youngs Peak (4112323)
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
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

CNPS Status Review: Proposed Addition to California Rare Plant Rank 2B.2, G4 / S2
Original Description: A Flora of North America 1(2): 193 (1838)
Revised Nomenclature: Madroño 66(4): 176-193 (2019)
Other: Silene hookeri account for potential Species of Conservation Concern evaluation (2022)

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Suggested Citation:
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 13 July 2025].
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