Taxon Report
Sidalcea oregana (T. & G.) Gray ssp. hydrophila (Heller) Hitchc.marsh checkerbloom |
|
Taxon Summary
Sidalcea oregana ssp. hydrophila, commonly known as marsh checkerbloom, is a perennial herb in the Malvaceae that is found only in California. It occurs within Meadows and seeps, and Riparian forest, growing at elevations from 1100 to 2300 meters. Sidalcea oregana ssp. hydrophila is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
|
Scientific Name: |
Sidalcea oregana (T. & G.) Gray ssp. hydrophila (Heller) Hitchc. |
|
Common Name: |
marsh checkerbloom |
| Family: | Malvaceae |
| Element Code: | PDMAL110K2 |
| USDA Plants Symbol: | SIORH |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: (Jun)Jul-Aug | (Jun)Jul-Aug |
| Elevation: | 1100-2300 (3610-7545) |
| General Habitats: | Meadows and seeps, Riparian forest |
| Microhabitat: | Mesic |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G5T2 |
|
State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_UCSC |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 35 |
| Element Occurrence Ranks: | |
| Excellent (A) | 4 |
| Good (B) | 0 |
| Fair (C) | 1 |
| Poor (D) | 0 |
| None (X) | 1 |
| Unknown (U) | 29 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Colusa (COL), Glenn (GLE), Lake (LAK), Mendocino (MEN), Napa (NAP) | |
| Quads: Name (Quad Code) | |
| Clearlake Highlands (3812286), Crockett Peak (3912247), Elk Mountain (3912238), Fouts Springs (3912236), Hull Mountain (3912258), Kelseyville (3812287), Kneecap Ridge (3912257), Lake Pillsbury (3912248), Leech Lake Mtn. (3912381), Mendocino Pass (3912278), Plaskett Meadows (3912267), Plaskett Ridge (3912268), Potato Hill (3912237), Sanhedrin Mtn. (3912351), St. Helena (3812254), St. John Mtn. (3912246), The Geysers (3812277), Whispering Pines (3812276) | |
Threat List Data from the CNDDB
| Threat List Total: | 6 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 6 | 17 % | |
| Grazing | 3 | 8% |
| Agriculture | 2 | 5% |
| Foot traffic/trampling | 1 | 2% |
| ORV activity | 1 | 2% |
| Over-collecting/poaching | 1 | 2% |
| Recreational use (non-ORV) | 1 | 2% |
Selected References
| USFS Potential Species of Conservation Concern Profile |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].