Taxon Report
Ivesia callida (Hall) Rydb.Tahquitz ivesia |
 2009 Jordan Zylstra |
Taxon Summary
Ivesia callida, commonly known as Tahquitz ivesia, is a perennial herb in the Rosaceae that is found only in California. It occurs within Upper montane coniferous forest (granitic, and rocky), growing at elevations from 2410 to 2450 meters. Ivesia callida is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.Classification
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Scientific Name: |
Ivesia callida (Hall) Rydb. |
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Common Name: |
Tahquitz ivesia |
| Family: | Rosaceae |
| Element Code: | PDROS0X040 |
| USDA Plants Symbol: | IVCA |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Jul-Sep | Jul-Sep |
| Elevation: | 2410-2450 (7905-8040) |
| General Habitats: | Upper montane coniferous forest |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.3 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | CR |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 2 |
| Element Occurrence Ranks: | |
| Excellent (A) | 2 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 0 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Riverside (RIV) | |
| Quads: Name (Quad Code) | |
| San Jacinto Peak (3311676) | |
Threat List Data from the CNDDB
| Threat List Total: | 1 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 50 % | |
| Road/trail construction/maint. | 1 | 50% |
Notes
| Rediscovered in 1980 by K. Berg, M. Hamilton, and T. Krantz; known from only two occurrences in the San Jacinto Wilderness Area. See University of California Publications in Botany 1:86 (1902) for original description, and Fremontia 11(1):13-15 (1983) for discussion of rediscovery. |
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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 21 February 2025].