Taxon Report
Downingia pusilla (D. Don) Torr.dwarf downingia |
 © 2013 Aaron Arthur |
Taxon Summary
Downingia pusilla, commonly known as dwarf downingia, is a annual herb in the Campanulaceae that is found in California and elsewhere. It occurs within Valley and foothill grassland (mesic), and Vernal pools, growing at elevations from 1 to 445 meters. Downingia pusilla is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Downingia pusilla (D. Don) Torr. |
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Common Name: |
dwarf downingia |
| Family: | Campanulaceae |
| Element Code: | PDCAM060C0 |
| USDA Plants Symbol: | DOPU3 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Mar-May | Mar-May |
| Elevation: | 1-445 (5-1460) |
| General Habitats: | Valley and foothill grassland, Vernal pools |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.2 |
| Global Rank: | GU |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 132 |
| Element Occurrence Ranks: | |
| Excellent (A) | 13 |
| Good (B) | 50 |
| Fair (C) | 10 |
| Poor (D) | 6 |
| None (X) | 7 |
| Unknown (U) | 46 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Fresno (FRE), Merced (MER), Napa (NAP), Placer (PLA), Sacramento (SAC), San Joaquin (SJQ), Solano (SOL), Sonoma (SON), Stanislaus (STA), Tehama (TEH), Yuba (YUB) | |
| Quads: Name (Quad Code) | |
| Allendale (3812148), Antioch North (3812117), Black Butte Dam (3912273), Browns Valley (3912124), Camp Far West (3912113), Capell Valley (3812242), Clay (3812132), Cooperstown (3712065), Corning (3912282), Cuttings Wharf (3812223), Denverton (3812128), Dozier (3812137), Elk Grove (3812143), Elmira (3812138), Florin (3812144), Folsom (3812162), Friant (3611986), Galt (3812133), Gerber (4012212), Glen Ellen (3812235), Goose Creek (3812131), Healdsburg (3812257), Henleyville (3912283), Kenwood (3812245), Knights Ferry (3712076), La Grange (3712064), Lincoln (3812183), Merced (3712034), Merced Falls (3712053), Mt. George (3812232), Napa (3812233), Owens Reservoir (3712032), Pleasant Grove (3812174), Red Bluff East (4012222), Richardson Springs NW (3912188), Rio Linda (3812164), Roseville (3812173), Sears Point (3812224), Sebastopol (3812247), Sheridan (3812184), Smartville (3912123), Snelling (3712054), Sonoma (3812234), Vina (3912281), West of Gerber (4012213), Wheatland (3912114), Yosemite Lake (3712044), Yountville (3812243) | |
Threat List Data from the CNDDB
| Threat List Total: | 19 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 81 | 61 % | |
| Grazing | 49 | 37% |
| Development | 39 | 29% |
| Agriculture | 13 | 9% |
| Other | 10 | 7% |
| ORV activity | 7 | 5% |
| Non-native plant impacts | 6 | 4% |
| Road/trail construction/maint. | 6 | 4% |
| Erosion/runoff | 6 | 4% |
| Disking | 5 | 3% |
| Foot traffic/trampling | 3 | 2% |
| Dam/Inundation | 3 | 2% |
| Surface water diversion | 2 | 1% |
| Biocides | 2 | 1% |
| Improper burning regime | 1 | 0% |
| Mining | 1 | 0% |
| Vandalism/dumping/litter | 1 | 0% |
| Over-collecting/poaching | 1 | 0% |
| Pollution | 1 | 0% |
| Recreational use (non-ORV) | 1 | 0% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 4 February 2025].