Oenothera primiveris

Life form², ³: forb, annual
Habitat: valleys, sand dunes
leaf presence³: leaves usually present
leaf arrangement³: basal
leaf format³: simple
leaf shape³: oblanceolate or lanceolate
leaf surface³: hairy
leaf margin³: pinnatifid
Flower color²: yellow
Flowering period²: Mar. to May
Armament², ³: spineless
Family¹, ², ³: Onagraceae (evening primrose family)
Synonym(s)¹: Oenothera primiveris ssp.primiveris
Status: common
Locations where collected or observed:
      Cabeza Prieta National Wildlife Refuge
      Organ Pipe Cactus National Monument
     
      Barry M. Goldwater Range
      Sonoran Desert National Monument

*For information on nomenclature, authorship, or plant characteristics, see these references:

• ¹ Felger, Richard Stephen, Susan Rutman, Thomas Van Devender, and Steven M. Buckley. 2012. Checklist of Vascular Plants of Organ Pipe Cactus National Monument, Cabeza Prieta National Wildlife Refuge, and Tinaja Altas, Arizona. CANOTIA 8:1-53
• ² Felger, Richard Stephen, Susan Rutman, Michael F. Wilson, and Kathryn Mauz. 2007. Botanical Diversity of Southwestern Arizona and Northwestern Sonora. in: Dry Borders, Great Natural Reserves of the Sonoran Desert. eds.: Richard Stephen Felger and Bill Broyles. The University of Utah Press, Salt Lake City
• ³ Felger, Richard Stephen. 2000. Flora of the Gran Desierto and Rio Colorado of Northwestern Mexico. The University of Arizona Press, Tucson