Taxon Report
Fremontodendron decumbens R. LloydPine Hill flannelbush |
 Steven Perry |
Taxon Summary
Fremontodendron decumbens, commonly known as Pine Hill flannelbush, is a perennial evergreen shrub in the Malvaceae that is found only in California. It occurs within Chaparral, and Cismontane woodland, growing at elevations from 425 to 760 meters. Fremontodendron decumbens is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Fremontodendron decumbens R. Lloyd |
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Common Name: |
Pine Hill flannelbush |
| Family: | Malvaceae |
| Element Code: | PDSTE03030 |
| USDA Plants Symbol: | FRDE2 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial evergreen shrub |
| Blooming Period: Apr-Jul | Apr-Jul |
| Elevation: | 425-760 (1395-2495) |
| General Habitats: | Chaparral, Cismontane woodland |
| Microhabitat: | Gabbroic (sometimes), Rocky, Serpentine (sometimes) |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | CR |
| Fed List: | FE |
| Other Status: | SB_CalBG/RSABG; SB_UCBG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 12 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 1 |
| Fair (C) | 3 |
| Poor (D) | 1 |
| None (X) | 0 |
| Unknown (U) | 6 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| El Dorado (ELD), Nevada (NEV), Yuba (YUB) | |
| Quads: Name (Quad Code) | |
| Clarksville (3812161), French Corral (3912132), Grass Valley (3912121), Rackerby (3912143), Shingle Springs (3812068) | |
Threat List Data from the CNDDB
| Threat List Total: | 10 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 10 | 83 % | |
| Development | 6 | 50% |
| Other | 3 | 25% |
| Road/trail construction/maint. | 3 | 25% |
| Non-native plant impacts | 2 | 16% |
| Improper burning regime | 2 | 16% |
| Landfill | 2 | 16% |
| Logging | 1 | 8% |
| Mining | 1 | 8% |
| Biocides | 1 | 8% |
| Wood cutting or brush clearing | 1 | 8% |
Notes
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Threats: |
| Threatened by development and alteration of fire regimes. Protected in part by Pine Hill ER (DFG). |
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Taxonomy: |
| See F. californicum ssp. decumbens in The Jepson Manual (1993); USFWS uses this name also. See Brittonia 17:382 (1965) for original description and Systematic Botany 16(1):3-20 (1991) for revised nomenclature and taxonomic treatment. |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 23 November 2025].