gymnosperm genus vs genus Dioon

Other hyponyms of gymnosperm genus include genus Gnetum, Catha, genus Catha, genus Ephedra, genus Welwitchia, genus Welwitschia, Cycas, genus Cycas, genus Zamia, genus Ceratozamia, genus Encephalartos, genus Macrozamia, Bennettitis, genus Bennettitis, genus Lyginopteris, Lyginopteris, Cordaites, genus Cordaites, genus Pinus, Pinus, genus Larix, Larix, genus Pseudolarix, Pseudolarix, Abies, genus Abies, Cedrus, genus Cedrus, genus Picea, Picea, genus Tsuga, Tsuga, genus Pseudotsuga, Pseudotsuga, genus Cathaya, Cupressus, genus Cupressus, Athrotaxis, genus Athrotaxis, Austrocedrus, genus Austrocedrus, Callitris, genus Callitris, Calocedrus, genus Calocedrus, Chamaecyparis, genus Chamaecyparis, Cryptomeria, genus Cryptomeria, genus Juniperus, Juniperus, genus Libocedrus, Libocedrus, genus Metasequoia, genus Sequoia, genus Taxodium, Taxodium, genus Tetraclinis, Tetraclinis, genus Thuja, Thuja, genus Thujopsis, Thujopsis, genus Keteleeria, genus Araucaria, Agathis, genus Agathis, Cephalotaxus, genus Cephalotaxus, genus Torreya, Torreya, genus Phyllocladus, Phyllocladus, genus Podocarpus, Podocarpus, Afrocarpus, genus Afrocarpus, Dacrycarpus, genus Dacrycarpus, Dacrydium, genus Dacrydium, Falcatifolium, genus Falcatifolium, genus Halocarpus, Halocarpus, genus Lagarostrobus, Lagarostrobus, genus Lepidothamnus, Lepidothamnus, genus Microstrobos, Microstrobos, genus Nageia, Nageia, genus Parasitaxus, Parasitaxus, genus Prumnopitys, Prumnopitys, genus Retrophyllum, Retrophyllum, genus Saxe-gothea, genus Saxegothea, Saxe-gothea, Saxegothea, genus Sundacarpus, Sundacarpus, genus Sciadopitys, Sciadopitys, genus Taxus, Taxus, Austrotaxus, genus Austrotaxus, genus Pseudotaxus, Pseudotaxus, genus Ginkgo.