Peirescia, Rhipsalis 
Opuntia ficus-indica 
Opuntia echiops
pictures (a).: B. HANSEN, b. Opuntia spec.
Opuntia cf. bigelowii (Anza Borego, California) - Stenocereus marginatus (a fence, near Mitla, Mexiko)
Cereus nycticactus (the "queeen of the night") - Brachycereus nesoticus (a pioneer plant on lava, endemic species of the Galapagos archipelago)
Brachycereus nesoticus - Jasminocereus thonarsii (Galapagos archipelago: The Darwin-station on Santa Cruz)
Epiphyllum chrysocardium (flower bud)
© Peter v. Sengbusch - b-online@botanik.uni-hamburg.de