Oenothera rhombipetala

Oenothera rhombipetala
Close-up of flowers
Habitat

Apparently Secure (NatureServe)[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Onagraceae
Genus: Oenothera
Species:
O. rhombipetala
Binomial name
Oenothera rhombipetala
Synonyms[2]
List
    • Oenothera heterophylla var. rhombipetala
    • Raimannia rhombipetala

Oenothera rhombipetala, the four-point evening-primrose, greater four-point evening-primrose, or diamond petal primrose, is a species of flowering plant in the family Onagraceae.[3] It is native to the central United States.[2] A biennial, it is often found alongside roads.[3] It can grow up to 5 feet (1.5 metres) tall.[3]

Taxonomy

Oenothera rhombipetala was scientifically described and named by botanist Thomas Nuttall in 1840. It is classified in the genus Oenothera within the Onagraceae family. It has no varieties, but was described as a variety of Oenothera heterophylla in 1942. It has two heterotypic synonyms.[2]

Table of Synonyms
Name Year Rank
Oenothera heterophylla var. rhombipetala (Nutt.) Fosberg 1942 variety
Raimannia rhombipetala (Nutt.) Rose ex Britton & A.Br. 1913 species

Ecology

The dusk and night flying bee Lasioglossum texanum only collects pollen from the four-point evening-primrose.[4]

References

  1. ^ NatureServe (5 September 2025). "Oenothera rhombipetala". NatureServe Explorer. Arlington, Virginia. Retrieved 14 September 2025.
  2. ^ a b c "Oenothera rhombipetala Nutt". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 14 September 2025.
  3. ^ a b c "Oenothera rhombipetala Nutt. ex Torr. & A. Gray". Plant Database. Lady Bird Johnson Wildflower Center. 21 February 2023. Retrieved 27 November 2023. Fourpoint Evening-primrose, Four-point Evening Primrose, Diamond Petal Primrose, Greater Four-point Evening-primrose
  4. ^ Kerfoot, William B. (1967). "Nest Architecture and Associated Behavior of the Nocturnal Bee, Sphecodogastra texana (Hymenoptera: Halictidae)". Journal of the Kansas Entomological Society. 40 (1): 84–93. ISSN 0022-8567. JSTOR 25083600.