Opuntia triacantha is a species of cactus known by the common names Spanish lady, Keys Joe-jumper, Big Pine Key prickly-pear, and jumping prickly apple.
Description This cactus grows prostrate or upright to a maximum length of 60 centimeters. The stem segments are flattened and oval in shape, up to 18 centimeters long by 7 wide. The black-tipped spines are up to 4 centimeters long. The cactus produces yellow flowers year-round. The fleshy red fruit is up to 3 centimeters long by 2 wide.Opuntia triacantha. Flora of North America.
Distribution and habitat The plant is native to the Caribbean, from Desecheo Island, Puerto Rico, to the Lesser Antilles. It grows on the sandy limestone of exposed reefs.Opuntia triacantha. Center for Plant Conservation.Opuntia triacantha. The Nature Conservancy.
Conservation This species is threatened by the cactus moth (Cactoblastis cactorum).
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