Taxon Report
Sidalcea malviflora (DC.) A. Gray ssp. dolosa C.L. Hitchc.Bear Valley checkerbloom |
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Taxon Summary
Sidalcea malviflora ssp. dolosa, commonly known as Bear Valley checkerbloom, is a perennial herb in the Malvaceae that is found only in California. It occurs within Lower montane coniferous forest (meadows, seeps), Meadows and seeps, Riparian woodland, Upper montane coniferous forest (meadows, and seeps), growing at elevations from 1495 to 2685 meters. Sidalcea malviflora ssp. dolosa is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Sidalcea malviflora (DC.) A. Gray ssp. dolosa C.L. Hitchc. |
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Common Name: |
Bear Valley checkerbloom |
| Family: | Malvaceae |
| Element Code: | PDMAL110FH |
| USDA Plants Symbol: | SIMAD |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: May-Aug | May-Aug |
| Elevation: | 1495-2685 (4905-8810) |
| General Habitats: | Lower montane coniferous forest, Meadows and seeps, Riparian woodland, Upper montane coniferous forest |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G4G5T2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 18 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 18 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| San Bernardino (SBD) | |
| Quads: Name (Quad Code) | |
| Big Bear City (3411637), Big Bear Lake (3411628), Harrison Mtn. (3411722), Moonridge (3411627), San Gorgonio Mtn. (3411617) | |
Threat List Data from the CNDDB
| Threat List Total: | 0 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 0 | % | |
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Notes
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Known only from the San Bernardino Mtns. Threatened by hydrological alterations, water diversions, and vehicles. Possibly threatened by development, recreational activities, and foot traffic. Similar to S. sparsifolia |
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Threats: |
| Threatened by hydrological alterations, water diversions, and vehicles. Possibly threatened by development, recreational activities, and foot traffic. |
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Taxonomy: |
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Similar to S. sparsifolia |
Selected References
| CRPR List Addition on 2012-06-13 |
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 October 2025].