Taxon Report
Sabulina howellii (S. Watson) Dillenb. & KadereitHowell's sandwort |
 ©2015 John Doyen |
Taxon Summary
Sabulina howellii, commonly known as Howell's sandwort, is a perennial herb in the Caryophyllaceae that is found in California and elsewhere. It occurs within Chaparral, and Lower montane coniferous forest, growing at elevations from 550 to 1000 meters. Sabulina howellii 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: |
Sabulina howellii (S. Watson) Dillenb. & Kadereit |
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Common Name: |
Howell's sandwort |
| Family: | Caryophyllaceae |
| Element Code: | PDCAR0G0F0 |
| USDA Plants Symbol: | |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Apr-Jul | Apr-Jul |
| Elevation: | 550-1000 (1805-3280) |
| General Habitats: | Chaparral, Lower montane coniferous forest |
| Microhabitat: | Serpentine |
| Microhabitat Details: | xeric |
Conservation Status
| CA Rare Plant Rank: | 1B.3 |
| Global Rank: | G3 |
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State Rank: |
S3 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 24 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 23 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Del Norte (DNT), Siskiyou (SIS) | |
| Quads: Name (Quad Code) | |
| Broken Rib Mtn. (4112386), Gasquet (4112378), High Divide (4112481), High Plateau Mtn. (4112388), Hiouchi (4112471), Indian Creek Baldy (4112267), Shelly Creek Ridge (4112387), Smith River (4112482) | |
Threat List Data from the CNDDB
| Threat List Total: | 3 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 2 | 8 % | |
| Foot traffic/trampling | 1 | 4% |
| Mining | 1 | 4% |
| Other | 1 | 4% |
Selected References
| Proceedings of the American Academy of Arts and Sciences 20:354 (1885) |
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Taxon 63(1):64-88 (2014) |
| Sabulina howellii profile for potential Species of Conservation Concern evaluation (2018) |
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 October 2025].