单词 | Psilotales |
释义 | Psilotalesplural noun Psi·lo·ta·les : an order of lower tracheophytes (subdivision Psilopsida) having a dichotomously branched sporophyte that is divided into aerial shoot and rhizome, lacks true roots, and has few or minute leaves, and having a gametophyte that is subterranean and free from chlorophyll see psilotaceae |
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