CNPS

CNPS Rare Plant Inventory

Species Details

Veratrum insolitum

Siskiyou false-hellebore

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Photo of Veratrum insolitum
©2008 Keir Morse 		Photo of Veratrum insolitum
©2008 Keir Morse

  Classification

Scientific Name:
Veratrum insolitum Jeps.
Common Name:
Siskiyou false-hellebore
Family: Melanthiaceae
Element Code: PMLIL25040
USDA Plants Symbol: VEIN
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 4.3
Fed List: None
State List: None
Global Rank: G3
State Rank:
 S4
Other Status:
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2022-08-02

  Ecology and Life History

Lifeform: perennial herb
Blooming Period: Jun-Aug
JFMAMJJASOND
Elevation:
45 - 1635 meters
150 - 5365 feet
General Habitats:
  • Chaparral
  • Lower montane coniferous forest
Microhabitat Details:
Microhabitat:
  • Clay

  Notes

Notes:
State-listed as Sensitive in WA.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 0
Total EOs % of EOs
EOs with Threat Listed: 0 0 %
THREAT LIST:

  Occurrence Data from the CNDDB

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

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA), Oregon (OR), Washington (WA)
California Counties and Islands: Name (Code)
Del Norte (DNT), Humboldt (HUM), Shasta (SHA), Siskiyou (SIS), Trinity (TRI)
Quads: Name (Quad Code)
Blue Creek Mtn. (4112347), Carrville (4112216), Covington Mill (4012287), Dinsmore (4012345), Figurehead Mtn. (4112383), Fish Lake (4112336), Forest Glen (4012333), High Divide (4112481), Hiouchi (4112471), Johnsons (4112337), Kangaroo Mtn. (4112382), Klamath Glen (4112358), Polar Bear Mtn. (4112385), Tangle Blue Lake (4112226), Tombstone Mtn. (4112213), Trinity Center (4012286), Wildwood (4012341)
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

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 29 November 2024].