psilophytales
psilophytales defined in 1951 year
psilophytales - psilophytales;psilophytales - Order of extinct, palaeozoic Pteridophyta that flourished in the Devonian. Oldest land plants known, with very primitive organization. Small, rhizomatous plants with dichotomously branched aerial shoots a few mm. to about a cm. in diameter, leafless or with many small leaves, with simple protostelic, vascular system; bearing apical sporangia.
near psilophytales in Knolik
| pseudopregnangy | home letter "P" start from "PS" | psilopsida |
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