Taxon Report
Fritillaria roderickii KnightRoderick's fritillary |
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Taxon Summary
Fritillaria roderickii, commonly known as Roderick's fritillary, is a perennial bulbiferous herb in the Liliaceae that is found only in California. It occurs within Coastal bluff scrub, Coastal prairie, and Valley and foothill grassland, growing at elevations from 15 to 400 meters. Fritillaria roderickii is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Fritillaria roderickii Knight |
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Common Name: |
Roderick's fritillary |
| Family: | Liliaceae |
| Element Code: | PMLIL0V0M0 |
| USDA Plants Symbol: | |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial bulbiferous herb |
| Blooming Period: Mar-May | Mar-May |
| Elevation: | 15-400 (50-1310) |
| General Habitats: | Coastal bluff scrub, Coastal prairie, Valley and foothill grassland |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1Q |
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State Rank: |
S1 |
| State List: | CE |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 8 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 2 |
| Fair (C) | 0 |
| Poor (D) | 1 |
| None (X) | 1 |
| Unknown (U) | 4 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Mendocino (MEN), Sonoma (SON) | |
| Quads: Name (Quad Code) | |
| Gualala (3812375), Laughlin Range (3912333), Philo (3912314), Point Arena (3812386)*, Saunders Reef (3812376) | |
Threat List Data from the CNDDB
| Threat List Total: | 7 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 3 | 38 % | |
| Development | 1 | 12% |
| Erosion/runoff | 1 | 12% |
| Foot traffic/trampling | 1 | 12% |
| Grazing | 1 | 12% |
| Non-native plant impacts | 1 | 12% |
| Road/trail construction/maint. | 1 | 12% |
| Wood cutting or brush clearing | 1 | 12% |
Notes
| Plants introduced in MEN (537D) and SON counties. Threatened by road maintenance, residential development, and erosion. Taxonomic validity has been questioned; needs further study. A synonym of F. biflora var. biflora in TJM (1993) and TJM 2. USFWS uses the name F. grayana. See Four Seasons 2(2):14-16 (1967) for original description. |
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Threats: |
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Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 16 November 2025].