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Opuntiaschottii. en Opuntia hintonii at the Palomar College Arboretum San Marcos California USA Identified by sign as Opuntia schottii Opuntia schottii is very different plant Opuntia hintonii is nomen nudum probably form of Tunilla corrugata own Stickpen released to public domain Tunilla corrugata Palomar College Arboretum