Taxon Report
Eucnide rupestris (Baill.) Thomps. & Ernstannual rock-nettle |
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Taxon Summary
Eucnide rupestris, commonly known as annual rock-nettle, is a annual herb in the Loasaceae that is found in California and elsewhere. It occurs within Sonoran desert scrub, growing at elevations from 500 to 600 meters. Eucnide rupestris 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: |
Eucnide rupestris (Baill.) Thomps. & Ernst |
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Common Name: |
annual rock-nettle |
| Family: | Loasaceae |
| Element Code: | PDLOA02020 |
| USDA Plants Symbol: | EURU5 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Dec-Apr | Dec-Apr |
| Elevation: | 500-600 (1640-1970) |
| General Habitats: | Sonoran desert scrub |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.2 |
| Global Rank: | G3 |
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State Rank: |
S1 |
| 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: | 6 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 6 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Imperial (IMP), San Diego (SDG) | |
| Quads: Name (Quad Code) | |
| Carrizo Mtn. (3211671), Coyote Wells (3211568), In-ko-pah Gorge (3211661), Painted Gorge (3211578), Sweeney Pass (3211672) | |
Threat List Data from the CNDDB
| Threat List Total: | 3 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 17 % | |
| ORV activity | 1 | 16% |
| Recreational use (non-ORV) | 1 | 16% |
| Vandalism/dumping/litter | 1 | 16% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 24 November 2025].