Taxon Report
Trifolium howellii Wats.Howell's clover |
 © 2021 Scot Loring |
Taxon Summary
Trifolium howellii, commonly known as Howell's clover, is a perennial herb in the Fabaceae that is found in California and elsewhere. It occurs within Lower montane coniferous forest, Meadows and seeps, and Upper montane coniferous forest, growing at elevations from 800 to 1800 meters. Trifolium howellii is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.Classification
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Scientific Name: |
Trifolium howellii Wats. |
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Common Name: |
Howell's clover |
| Family: | Fabaceae |
| Element Code: | PDFAB40140 |
| USDA Plants Symbol: | TRHO |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Jun-Aug | Jun-Aug |
| Elevation: | 800-1800 (2625-5905) |
| General Habitats: | Lower montane coniferous forest, Meadows and seeps, Upper montane coniferous forest |
| Microhabitat: | Mesic |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 4.3 |
| Global Rank: | G4 |
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State Rank: |
S4 |
| 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), Siskiyou (SIS) | |
| Quads: Name (Quad Code) | |
| Takilma (4212315), Grouse Mtn. (4012376), Marble Mountain (4112352), Ukonom Mtn. (4112354) | |
Threat List Data from the CNDDB
| Threat List Total: | 0 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 0 | 0 % | |
Selected References
| 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 26 February 2025].