Summary
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.[1][2]
| 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 | |
Habitat edit
It is native to the southwestern United States and northern Mexico.[2][3]
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.[1] It is found in the Mojave Desert.[1][2]
Description edit
Oenothera primiveris is a hairy annual herb producing a dense rosette of leaves in which the inflorescence occurs. There is generally no true stem.[4]
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.[4]
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.[4] Its bloom period is February through May.[1][2]
The fruit is a straight or curving capsule up to 6 centimetres (2.4 in) in length.[4]
Subspecies edit
References edit
- ^ a b c d Calflora Database: Oenothera primiveris
- ^ a b c d Lady Bird Johnson Wildflower Center-NPIN: Oenothera primiveris
- ^ USDA: Oenothera primiveris
- ^ a b c d Jepson eFlora: Oenothera primiveris
- ^ Calflora Database: Oenothera primiveris ssp. bufonis
- ^ Calflora Database: Oenothera primiveris ssp. primiveris
External links edit
- Calflora Database: Oenothera primiveris (Yellow desert evening primrose)
- Jepson Manual eFlora (TJM2) treatment of Oenothera primiveris
- UC CalPhotos gallery of Oenothera primiveris images