Taxon Report
Clarkia australis E. SmallSmall's southern clarkia |
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Taxon Summary
Clarkia australis, commonly known as Small's southern clarkia, is a annual herb in the Onagraceae that is found only in California. It occurs within Cismontane woodland, and Lower montane coniferous forest, growing at elevations from 800 to 2075 meters. Clarkia australis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Clarkia australis E. Small |
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Common Name: |
Small's southern clarkia |
| Family: | Onagraceae |
| Element Code: | PDONA05040 |
| USDA Plants Symbol: | CLAU2 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: May-Aug | May-Aug |
| Elevation: | 800-2075 (2625-6810) |
| General Habitats: | Cismontane woodland, Lower montane coniferous forest |
| Microhabitat: | |
| Microhabitat Details: |
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: | 41 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 4 |
| Fair (C) | 4 |
| Poor (D) | 0 |
| None (X) | 1 |
| Unknown (U) | 32 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Madera (MAD), Mariposa (MPA), Tuolumne (TUO) | |
| Quads: Name (Quad Code) | |
| Ackerson Mtn. (3711977), Ascension Mtn. (3711978), Buckhorn Peak (3712061), Cherry Lake South (3711988), Coulterville (3712062), Crandall Peak (3812022), Duckwall Mtn. (3712081), El Portal (3711967), Fish Camp (3711946), Jawbone Ridge (3712071), Kinsley (3711968), Lake Eleanor (3711987), Tamarack Flat (3711976), Tuolumne (3712082), Twain Harte (3812012) | |
Threat List Data from the CNDDB
| Threat List Total: | 10 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 18 | 44 % | |
| Logging | 14 | 34% |
| Road/trail construction/maint. | 4 | 9% |
| Wood cutting or brush clearing | 3 | 7% |
| Other | 2 | 4% |
| Improper burning regime | 2 | 4% |
| Biocides | 1 | 2% |
| Disking | 1 | 2% |
| Erosion/runoff | 1 | 2% |
| Foot traffic/trampling | 1 | 2% |
| Grazing | 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 12 February 2025].