| 释义 |
gymnosperm genus
Thesaurus| Noun | 1. | gymnosperm genus - a genus of gymnospermsgenus - (biology) taxonomic group containing one or more speciesclass 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 conesCatha, genus Catha - a genus of African evergreen shrubs characterized by thick leaves and white flowersgenus Ephedra - type and sole genus of Ephedraceae: tropical and subtropical evergreen shrubby or creeping plants native to dry and inhospitable regionsgenus Welwitchia, genus Welwitschia - type and sole genus of WelwitschiaceaeCycas, 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 leavesgenus Zamia - genus of small evergreen tropical and subtropical American cycadsgenus Ceratozamia - small genus of Mexican cycads; sometimes classified in family Cycadaceaegenus Dioon - small genus of arborescent cycads of Mexico and Central America; sometimes classified in family Cycadaceaegenus Encephalartos - genus of arborescent African cycads; sometimes classified in family Cycadaceaegenus Macrozamia - genus of large evergreen Australian cycads; sometimes classified in family CycadaceaeBennettitis, genus Bennettitis - type of the Bennettitalesgenus Lyginopteris, Lyginopteris - genus of fossil seed ferns of the CarboniferousCordaites, genus Cordaites - tall Paleozoic trees superficially resembling modern screw pines; structurally intermediate in some ways between cycads and conifersgenus Pinus, Pinus - type genus of the Pinaceae: large genus of true pinesgenus Larix, Larix - larchesgenus Pseudolarix, Pseudolarix - one species: golden larchAbies, genus Abies - true firsCedrus, genus Cedrus - true cedarsgenus Picea, Picea - a genus of temperate and Arctic evergreen trees (see spruce)genus Tsuga, Tsuga - hemlock; hemlock fir; hemlock sprucegenus Pseudotsuga, Pseudotsuga - douglas fir; closely related to genera Larix and Cathayagenus Cathaya - one species; related to Pseudotsuga and LarixCupressus, genus Cupressus - type genus of CupressaceaeAthrotaxis, genus Athrotaxis - a genus of gymnospermAustrocedrus, genus Austrocedrus - one species; formerly included in genus LibocedrusCallitris, genus Callitris - evergreen monoecious coniferous trees or shrubs: cypress pinesCalocedrus, genus Calocedrus - tall evergreens of western North America and eastern Asia; formerly included in genus LibocedrusChamaecyparis, genus Chamaecyparis - a genus of ChamaecyparisCryptomeria, genus Cryptomeria - Japanese cedar; sugigenus Juniperus, Juniperus - junipersgenus Libocedrus, Libocedrus - cypresses that resemble cedarsgenus 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 Taxodiaceaegenus Sequoia - redwoods; until recently considered a genus of a separate family Taxodiaceaegenus Taxodium, Taxodium - bald cypress; swamp cypressgenus Tetraclinis, Tetraclinis - sandarac treegenus Thuja, Thuja - red cedargenus Thujopsis, Thujopsis - one species; has close similarity to genus Thujagenus Keteleeria - a genus of keteleeriagenus Araucaria - a genus of the araucaria familyAgathis, genus Agathis - kauri pineCephalotaxus, genus Cephalotaxus - the genus of Cephalotaxus (see plum-yews)genus Torreya, Torreya - nutmeg-yews |
gymnosperm genus
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