Taxon Report
Horkelia parryi GreeneParry's horkelia |
 © 2009 Barry Breckling |
Taxon Summary
Horkelia parryi, commonly known as Parry's horkelia, is a perennial herb in the Rosaceae that is found only in California. It occurs within Chaparral, and Cismontane woodland, growing at elevations from 80 to 1070 meters. Horkelia parryi is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Horkelia parryi Greene |
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Common Name: |
Parry's horkelia |
| Family: | Rosaceae |
| Element Code: | PDROS0W0C0 |
| USDA Plants Symbol: | HOPA2 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Apr-Sep | Apr-Sep |
| Elevation: | 80-1070 (260-3510) |
| General Habitats: | Chaparral, Cismontane woodland |
| Microhabitat: | |
| Microhabitat Details: | Ione formation and other soils |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 44 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 16 |
| Fair (C) | 3 |
| Poor (D) | 1 |
| None (X) | 0 |
| Unknown (U) | 24 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Amador (AMA), Calaveras (CAL), El Dorado (ELD), Mariposa (MPA), Tuolumne (TUO) | |
| Quads: Name (Quad Code) | |
| Buckhorn Peak (3712061), Calaveritas (3812025), Camino (3812066), Carbondale (3812141), Columbia Se (3812013), Feliciana Mtn. (3711958), Garden Valley (3812077), Georgetown (3812087), Ione (3812038), Irish Hill (3812048), Kinsley (3711968), Murphys (3812024), Omo Ranch (3812055), Placerville (3812067), Rail Road Flat (3812035), Slate Mtn. (3812076), Stanislaus (3812023), Tunnel Hill (3812086), Wallace (3812028) | |
Threat List Data from the CNDDB
| Threat List Total: | 13 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 25 | 57 % | |
| Road/trail construction/maint. | 17 | 38% |
| ORV activity | 11 | 25% |
| Wood cutting or brush clearing | 8 | 18% |
| Recreational use (non-ORV) | 4 | 9% |
| Erosion/runoff | 3 | 6% |
| Improper burning regime | 3 | 6% |
| Logging | 3 | 6% |
| Mining | 2 | 4% |
| Biocides | 2 | 4% |
| Vandalism/dumping/litter | 2 | 4% |
| Non-native plant impacts | 1 | 2% |
| Grazing | 1 | 2% |
| Other | 1 | 2% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 February 2025].