Taxon Report
Micranthes marshallii (Greene) SmallMarshall's saxifrage |
 2017 Barrett Jeffery |
Taxon Summary
Micranthes marshallii, commonly known as Marshall's saxifrage, is a perennial rhizomatous herb in the Saxifragaceae that is found in California and elsewhere. It occurs within Riparian forest, growing at elevations from 90 to 2130 meters. Micranthes marshallii is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.Classification
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Scientific Name: |
Micranthes marshallii (Greene) Small |
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Common Name: |
Marshall's saxifrage |
| Family: | Saxifragaceae |
| Element Code: | PDSAX0U0X0 |
| 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-Aug | Mar-Aug |
| Elevation: | 90-2130 (295-6990) |
| General Habitats: | Riparian forest |
| Microhabitat: | Rocky, Streambanks |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 4.3 |
| Global Rank: | G5 |
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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), Mendocino (MEN), Siskiyou (SIS), Trinity (TRI) | |
| Quads: Name (Quad Code) | |
| Boulder Peak (4112351), English Peak (4112342), French Camp Ridge (4112327), Gasquet (4112378), Hennessy Peak (4012375), Hiouchi (4112471), Hurdygurdy Butte (4112377), Leggett (3912376), Salyer (4012385), Shelly Creek Ridge (4112387), Trinity Mtn. (4112314), Ukonom Lake (4112353), Willow Creek (4012386) | |
Threat List Data from the CNDDB
| Threat List Total: | 0 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 0 | 0 % | |
Notes
| Possibly threatened by fire suppression. Previously identified as Saxifraga rufidula, which does not occur in California. See Saxifraga marshallii in TJM (1993). See Pittonia 1(9):159-160 (1888) for original description and North American Flora 22(2):145 (1905) for taxonomic treatment. |
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Threats: |
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Taxonomy: |
Selected References
| CRPR List Addition on 2016-07-06 |
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].