Tetrapteron graciliflorum – “Hill Suncup”

Other Botanical Names: Camissonia graciliflorum, Oenothera graciliflora
Family: Evening Primrose (Onagraceae)
Bloom Period: Mar-Apr
Form: Annual herb
Habitat: Clayey soils on hillsides
Leaves: Simple to twice pinnately-compound; basal, alternate
Translation: “Tetrapteron” is Greek for “four wings,” which refers to the shape of the four-chambered fruit; “graciflorum” is Latin for “graceful flower,” which is an apt description; “Camissonia” is named for Ludolf Karl Adelbert von Chamisso (1781-1838), French-born Prussian botanist, author, Romantic poet, and custodian of the botanical gardens in Berlin; For “Oenothera,” see entry on Dune Primrose.