| 单词 | Gymnospermae |
| 释义 | Gymnospermae (once / 5909656 pages) n WORD FAMILY Gymnospermae USAGE EXAMPLESGymnospermae.—Trees or shrubs; leaves vary considerably in size and form. Various, Encyclopaedia Britannica, 11th Edit...(2011) n 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) Syn|Hyper Gymnospermophyta, class Gymnospermae, division Gymnospermophyta class (biology) a taxonomic group containing one or more orders |
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