Climbing plants (climbers) have no self-supporting stem, they rather brace on other plants or substrate (e. g. rock or walls) by means of tendrils (e. g. in Vitis – wine), adhesive roots (e. g. in Hedera – Ivy), barbs (e. g. in Galium aparine – Cleavers), climbing hairs (e. g. in Humulus lupulus – Hop) or a twining stem (e. g. in Calystegia – False Bindweed).