2. Cissus L.
(Lombardi, 2000)
About 200
species, widespread in tropical and warm-temperate regions of both the Old
World and New World.
Some exotic
species of Cissus are cultivated as house plants and in greenhouses, and
have large tuberous rootstocks and/or succulent sometimes winged stems. The
rootstocks of various species reputedly are poisonous.