CNPS

CNPS Rare Plant Inventory

Species Details

Silene suksdorfii

Cascade alpine campion

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Photo of Silene suksdorfii
©2008 Shawn DeCew 		Photo of Silene suksdorfii
©2018 Matt C. Berger

  Classification

Scientific Name:
Silene suksdorfii Rob.
Common Name:
Cascade alpine campion
Family: Caryophyllaceae
Element Code: PDCAR0U1W0
USDA Plants Symbol: SISU
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 2B.3
Fed List: None
State List: None
Global Rank: G4
State Rank:
 S3
Other Status: SB_UCSC
CRPR Changes:
changed from 2.3 to 2B.3 on 2013-06-12
Add Date: 1988-01-01
Date Edited: 2022-12-06

  Ecology and Life History

Lifeform: perennial herb
Blooming Period: Jul-Sep
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Elevation:
2355 - 3110 meters
7725 - 10205 feet
General Habitats:
  • Alpine boulder and rock field
  • Subalpine coniferous forest
  • Upper montane coniferous forest
Microhabitat Details:
Microhabitat:
  • Rocky
  • Volcanic

  Notes

Notes:
Known in CA only from Mt. Shasta and Mt. Lassen. On review list in ID, and watch list in OR. See Bot. Gaz. 16: 44 (1891) for original description and Madroño 34(1):29-40 (1987) for taxonomic discussion.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 1
Total EOs % of EOs
EOs with Threat Listed: 1 10 %
THREAT LIST:
Logging 1 10%

  Occurrence Data from the CNDDB

Total Occurrences: 10
Element Occurrence Ranks:
A B C D X U
0 2 0 0 0 8
Occurrence Status:
Historical >20 Years 7
Recent <=20 Years 3
Presence:
Presumed Extant 10
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA), Idaho (ID), Oregon (OR), Washington (WA)
California Counties and Islands: Name (Code)
Shasta (SHA), Siskiyou (SIS), Tehama (TEH)
Quads: Name (Quad Code)
Lassen Peak (4012145), Manzanita Lake (4012155), McCloud (4112232), Mt. Shasta (4112242), Rainbow Mtn. (4112148)?, Reading Peak (4012144), West Prospect Peak (4012154)
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

Other: USFS Potential Species of Conservation Concern Profile
Suggested Citation:
California Native Plant Society, Rare Plant Program. 2023. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 27 September 2023].