Taxon Report
Phlox hirsuta E. Nels.Yreka phlox |
 ©2015 John Doyen |
Taxon Summary
Phlox hirsuta, commonly known as Yreka phlox, is a perennial herb in the Polemoniaceae that is found only in California. It occurs within Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 820 to 1500 meters. Phlox hirsuta is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
|
Scientific Name: |
Phlox hirsuta E. Nels. |
|
Common Name: |
Yreka phlox |
| Family: | Polemoniaceae |
| Element Code: | PDPLM0D100 |
| USDA Plants Symbol: | PHHI7 |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Apr-Jun | Apr-Jun |
| Elevation: | 820-1500 (2690-4920) |
| General Habitats: | Lower montane coniferous forest, Upper montane coniferous forest |
| Microhabitat: | Serpentine, Talus |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G1 |
|
State Rank: |
S1 |
| State List: | CE |
| Fed List: | FE |
| Other Status: | SB_CalBG/RSABG |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 5 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 3 |
| Fair (C) | 1 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 0 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Siskiyou (SIS) | |
| Quads: Name (Quad Code) | |
| Montague (4112265), Yreka (4112266) | |
Threat List Data from the CNDDB
| Threat List Total: | 8 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 5 | 100 % | |
| Road/trail construction/maint. | 5 | 100% |
| Non-native plant impacts | 3 | 60% |
| ORV activity | 3 | 60% |
| Development | 2 | 40% |
| Grazing | 2 | 40% |
| Logging | 2 | 40% |
| Over-collecting/poaching | 1 | 20% |
| Vandalism/dumping/litter | 1 | 20% |
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 24 October 2025].