Taxon Report
Oenothera longissima Rydb.long-stem evening-primrose |
|
Taxon Summary
Oenothera longissima, commonly known as long-stem evening-primrose, is a annual/perennial herb in the Onagraceae that is found in California and elsewhere. It occurs within Mojavean desert scrub, and Pinyon and juniper woodland, growing at elevations from 1000 to 1700 meters. Oenothera longissima is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.Classification
|
Scientific Name: |
Oenothera longissima Rydb. |
|
Common Name: |
long-stem evening-primrose |
| Family: | Onagraceae |
| Element Code: | PDONA0C0T0 |
| USDA Plants Symbol: | OELO |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | annual/perennial herb |
| Blooming Period: Jul-Sep | Jul-Sep |
| Elevation: | 1000-1700 (3280-5580) |
| General Habitats: | Mojavean desert scrub, Pinyon and juniper woodland |
| Microhabitat: | Mesic (sometimes) |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.2 |
| Global Rank: | G4 |
|
State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 4 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 4 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Inyo (INY), San Bernardino (SBD) | |
| Quads: Name (Quad Code) | |
| Bighorn Basin (3411576), Deep Springs Lake (3711831), Fountain Peak (3411585), Ivanpah (3511533) | |
Threat List Data from the CNDDB
| Threat List Total: | 0 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 0 | % | |
|
|
||
Selected References
| CRPR List Addition on 2006-12-27 |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 November 2025].