rattail cactus(n = noun.plant) aporocactus flagelliformis, rat's-tail cactus - commonly cultivated tropical American cactus having slender creeping stems and very large showy crimson flowers that bloom for several days; Array
is a kind of cactus
is a member of aporocactus, genus aporocactus

barrel cactus, cactus, cactus euphorbia, cactus family, cactus mouse, cactus wren, christmas cactus, crab cactus, easter cactus, garambulla cactus, golden barrel cactus, hedgehog cactus, knowlton's cactus, mistletoe cactus, orchid cactus, pitahaya cactus, prickly pear cactus, rainbow cactus, rat's-tail cactus, rattail, rattail fish, redbird cactus, russian cactus, thanksgiving cactus, vine cactus