A plant genus of the family ONAGRACEAE. Members contain oenotheins.

A plant species, of the genus OENOTHERA, family ONAGRACEAE, that is the source of evening primrose oil.

The genetic complement of PLASTIDS as represented in their DNA.

Multicellular, eukaryotic life forms of kingdom Plantae (sensu lato), comprising the VIRIDIPLANTAE; RHODOPHYTA; and GLAUCOPHYTA; all of which acquired chloroplasts by direct endosymbiosis of CYANOBACTERIA. They are characterized by a mainly photosynthetic mode of nutrition; essentially unlimited growth at localized regions of cell divisions (MERISTEMS); cellulose within cells providing rigidity; the absence of organs of locomotion; absence of nervous and sensory systems; and an alternation of haploid and diploid generations.