An Elongate Twig Ant (Pseudomyrmex gracilis) patrolling a Caesar weed (Urena labata) blossom. I have been stung by these ants many times (usually my fault). The Caesar Weed is an introduced member of the Hibiscus family that was once farmed in Florida for it's strong jute-like fibers but is now considered an invasive pest. It does have several medicinal uses. Sweetbay Natural Area.