These are the typical striped achenes of the edible sunflower (Helianthus annuus). An achene is a one-seeded, dry, indehiscent fruit in which the fruit coat is not fused to the fruit wall.
These are the typical striped achenes of the edible sunflower (Helianthus annuus). An achene is a one-seeded, dry, indehiscent fruit in which the fruit coat is not fused to the fruit wall.