Aporocactus ×knebelii Aporocactus ×knebelii Knebel in Phyllokakteen: 60. 1931 sec. The Plant List v. 1.1 20131≡Aporocactus knebelii Knebel in Phyllokakteen: 60. 1931 syn. sec. The Plant List v. 1.1 201311. TPLContent