| Oenothera primiveris | |
|---|---|
| |
| Oenothera primiveris subsp. bufonis | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Myrtales |
| Family: | Onagraceae |
| Genus: | Oenothera |
| Species: | O. primiveris |
| Binomial name | |
| Oenothera primiveris A.Gray | |
Oenothera primiveris is a species of flowering plant in the evening primrose family known by the common names yellow desert evening primrose, bottle evening-primrose, and desert evening-primrose.
Habitat
It is native to the southwestern United States and northern Mexico.
It grows below 4,500 feet (1,400 m) in many types of flat desert habitats, including Creosote bush scrub, Joshua tree woodland, and Pinyon-juniper woodland. It is found in the Mojave Desert.
Description
Oenothera primiveris is a hairy annual herb producing a dense rosette of leaves in which the inflorescence occurs. There is generally no true stem.
The green or grayish leaves are up to 28 centimeters long and have wavy or crinkled edges, or are cut into deep lobes or teeth.
Flowers arise from the axils of the leaves. Each flower has yellow petals up to 4 centimetres (1.6 in) in length which fade orange or red with age. Its bloom period is February through May.
The fruit is a straight or curving capsule up to 6 centimetres (2.4 in) in length.
Subspecies
- Oenothera primiveris subsp. bufonis — Large yellow desert primrose, endemic to the Mojave Desert in California & Nevada.
- Oenothera primiveris subsp. primiveris
References
- ^ Calflora Database: Oenothera primiveris
- ^ Lady Bird Johnson Wildflower Center-NPIN: Oenothera primiveris
- USDA: Oenothera primiveris
- ^ Jepson eFlora: Oenothera primiveris
- Calflora Database: Oenothera primiveris ssp. bufonis
- Calflora Database: Oenothera primiveris ssp. primiveris
External links
- Calflora Database: Oenothera primiveris (Yellow desert evening primrose)
- Jepson Manual eFlora (TJM2) treatment of Oenothera primiveris
- UC CalPhotos gallery of Oenothera primiveris images
| Taxon identifiers | |
|---|---|
| Oenothera primiveris |
|
- Oenothera
- North American desert flora
- Flora of the California desert regions
- Flora of Northwestern Mexico
- Flora of Arizona
- Flora of Nevada
- Flora of New Mexico
- Flora of Texas
- Flora of Utah
- Flora of the Colorado Plateau and Canyonlands region
- Natural history of the Mojave Desert
- Night-blooming plants
- Taxa named by Asa Gray