Lucky Clover.
Plant Name: Galium aparine
Common Name: Goosegrass, stickywilly, catchweed bedstraw, Sweethearts, Cleavers, Gooseweed, Velcro Plant, Stickyweed, Clivers, Sticky Bob, Stickybud, Stickyback, Robin-run-the-hedge, Sticky Willow, Sticky Jack, Stickeljack, Grip Grass, Sticky Grass, Bobby Buttons, catchweed