genus rhynia
English Thesaurus
1. type genus of the Rhyniaceae; small leafless dichotomously branching fossil plants with terminal sporangia and smooth branching rhizomes (noun.plant)
| hypernym | : | fern genus, |
| definition | : | genera of ferns and fern allies (noun.plant) |
| member meronym | : | family rhyniaceae, rhyniaceae, |
| definition | : | primitive plants of the Paleozoic (noun.plant) |
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