Taxon Report
Micranthes howellii (Greene) SmallHowell's saxifrage |
 © 2007 Jenn Tiehm |
Taxon Summary
Micranthes howellii, commonly known as Howell's saxifrage, is a perennial rhizomatous herb in the Saxifragaceae that is found in California and elsewhere. It occurs within Cismontane woodland, growing at elevations from 75 to 900 meters. Micranthes howellii is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.Classification
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Scientific Name: |
Micranthes howellii (Greene) Small |
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Common Name: |
Howell's saxifrage |
| Family: | Saxifragaceae |
| Element Code: | PDSAX0U0T0 |
| USDA Plants Symbol: | |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial rhizomatous herb |
| Blooming Period: Mar-May | Mar-May |
| Elevation: | 75-900 (245-2955) |
| General Habitats: | Cismontane woodland |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 4.3 |
| Global Rank: | G4 |
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State Rank: |
S3 |
| 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: | 0 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 0 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Del Norte (DNT), Humboldt (HUM) | |
| Quads: Name (Quad Code) | |
| Gasquet (4112378), High Plateau Mtn. (4112388), Hurdygurdy Butte (4112377), Shelly Creek Ridge (4112387) | |
Threat List Data from the CNDDB
| Threat List Total: | 0 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 0 | 0 % | |
Selected References
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Micranthes howellii profile for potential Species of Conservation Concern evaluation (2022) |
| USFS Potential Species of Conservation Concern Profile |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].