Sunflower (Helianthus annuus) is grown for the oil-rich achenes, here black, dried indehiscent fruits formed in a helical arrangement on the giant inflorescence, a head or capitulum. Each achene possesses a single seed.
Sunflower (Helianthus annuus) is grown for the oil-rich achenes, here black, dried indehiscent fruits formed in a helical arrangement on the giant inflorescence, a head or capitulum. Each achene possesses a single seed.