CNPS

CNPS Rare Plant Inventory

Species Details

Sidalcea oregana ssp. eximia

coast checkerbloom

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Classification

Scientific Name:
Sidalcea oregana (T. & G.) Gray ssp. eximia (Greene) Hitchc.
Common Name:
coast checkerbloom
Family: Malvaceae
Element Code: PDMAL110K9
USDA Plants Symbol: SIORE
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G5T1
State Rank:
 S1
Other Status:
CRPR Changes:
Add Date: 1994-01-01
Date Edited: 2021-05-26

Ecology and Life History

Lifeform: perennial herb
Blooming Period: Jun-Aug
Elevation:
5 - 1340 meters
15 - 4395 feet
General Habitat:
  • Lower montane coniferous forest
  • Meadows and seeps
  • North Coast coniferous forest
General Micro Habitat:
Micro Habitat:

Notes

Notes:
Known from approximately ten occurrences. Possibly threatened by trampling. Intergrades with sspp. oregana and spicata. See University of Washington Publications in Biology 18:1-96 (1957) for taxonomic treatment.
Threats:
Taxonomy:
Other:

Occurrence Data from the CNDDB

Total Occurrences: 19
Element Occurrence Ranks:
A B C D X U
0 1 5 1 0 12
Occurrence Status:
Historical >20 Years 15
Recent <=20 Years 4
Presence:
Presumed Extant 19
Possibly Extirpated 0
Presumed Extirpated 0

Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Del Norte (DNT), Humboldt (HUM), Siskiyou (SIS), Trinity (TRI)
Quads: Name (Quad Code)
Arcata North (4012481), Board Camp Mtn. (4012366), Cannibal Island (4012463), Crescent City (4112472), Eureka (4012472), Fields Landing (4012462), Grouse Mtn. (4012376), Hopkins Butte (4112325), Iaqua Buttes (4012368), Mad River Buttes (4012367), Maple Creek (4012377), McConaughy Gulch (4112247), Salmon Mtn. (4112324), Smith River (4112482), Tish Tang Point (4112315), Trinity Mtn. (4112314), Weitchpec (4112326)
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
Print this Map
Counties   Quads

Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2022. Rare Plant Inventory (online edition, v9-01 1.5). Website https://www.rareplants.cnps.org [accessed 28 September 2022].