true bindweed (Convolvulus).
slender bindweed (Polymeria calycina).
bittersweet nightshade, blue bindweed (Solanum dulcamara).
false bindweed (Calystegia).
black bindweed (Fallopia convolvulus).
A common and invasive Eurasian perennial weed, Convolvulus arvensis, which has become established worldwide.