Any plant, of the genus Helianthus, having large flower heads with dark disk florets and showy yellow rays; the sunflowers
A sunflower.
A heliotrope; so named because its flowers are supposed to turn toward the sun.
The euphorbiaceous plant Chrozophora tinctoria.
A purple dye obtained from Chrozophora tinctoria.
A sun spurge (Euphorbia helioscopia).