Pig's Ear (Cotyledon) is a biological genus in the family Crassulaceae (Stonecrops) and order Saxifragales.
Cotyledon barbeyi
Cotyledon orbiculata
Aeonium
Diamorpha
Dudleya
Echeveria
Sempervivum
Jovibarba
Graptopetalum
Lenophyllum
Sedella
Phedimus
Cotyledon
Crassula
Rhodiola
Sedum
Hylotelephium
Villadia
Kalanchoe