genus - (biology) taxonomic group containing one or more species

class Gymnospermae, division Gymnospermophyta, Gymnospermae, Gymnospermophyta - plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina (class Gnetopsida) and Coniferophytina (class Coniferopsida); in some classifications the Coniferophytina are divided into three groups: Pinophytina (class Pinopsida) and Ginkgophytina (class Ginkgopsida) and Taxophytina (class Taxopsida)

genus Gnetum - type genus of the Gnetaceae; small trees or shrubs usually with climbing jointed stems and terminal spikes of flowers with orange-red seeds clustered in rough cones

Catha, genus Catha - a genus of African evergreen shrubs characterized by thick leaves and white flowers

genus Ephedra - type and sole genus of Ephedraceae: tropical and subtropical evergreen shrubby or creeping plants native to dry and inhospitable regions

genus Welwitchia, genus Welwitschia - type and sole genus of Welwitschiaceae

Cycas, genus Cycas - type genus of Cycadaceae: genus of widely distributed Old World evergreen tropical trees having pinnate leaves and columnar stems covered with persistent bases of old leaves

genus Zamia - genus of small evergreen tropical and subtropical American cycads

genus Ceratozamia - small genus of Mexican cycads; sometimes classified in family Cycadaceae

genus Dioon - small genus of arborescent cycads of Mexico and Central America; sometimes classified in family Cycadaceae

genus Encephalartos - genus of arborescent African cycads; sometimes classified in family Cycadaceae

genus Macrozamia - genus of large evergreen Australian cycads; sometimes classified in family Cycadaceae

Bennettitis, genus Bennettitis - type of the Bennettitales

genus Lyginopteris, Lyginopteris - genus of fossil seed ferns of the Carboniferous

Cordaites, genus Cordaites - tall Paleozoic trees superficially resembling modern screw pines; structurally intermediate in some ways between cycads and conifers

genus Pinus, Pinus - type genus of the Pinaceae: large genus of true pines

genus Larix, Larix - larches

genus Pseudolarix, Pseudolarix - one species: golden larch

Abies, genus Abies - true firs

Cedrus, genus Cedrus - true cedars

genus Picea, Picea - a genus of temperate and arctic evergreen trees (see spruce)

genus Tsuga, Tsuga - hemlock; hemlock fir; hemlock spruce

genus Pseudotsuga, Pseudotsuga - douglas fir; closely related to genera Larix and Cathaya

genus Cathaya - one species; related to Pseudotsuga and Larix

Cupressus, genus Cupressus - type genus of Cupressaceae

Athrotaxis, genus Athrotaxis - a genus of gymnosperm

Austrocedrus, genus Austrocedrus - one species; formerly included in genus Libocedrus

Callitris, genus Callitris - evergreen monoecious coniferous trees or shrubs: cypress pines

Calocedrus, genus Calocedrus - tall evergreens of western North America and eastern Asia; formerly included in genus Libocedrus

Chamaecyparis, genus Chamaecyparis - a genus of Chamaecyparis

Cryptomeria, genus Cryptomeria - Japanese cedar; sugi

genus Juniperus, Juniperus - junipers

genus Libocedrus, Libocedrus - cypresses that resemble cedars

genus Metasequoia - genus of deciduous conifers comprising both living and fossil forms; 1 extant species: dawn redwood of China; variously classified as member of Pinaceae or Taxodiaceae

genus Sequoia - redwoods; until recently considered a genus of a separate family Taxodiaceae

genus Taxodium, Taxodium - bald cypress; swamp cypress

genus Tetraclinis, Tetraclinis - sandarac tree