horneophyton
English Thesaurus
1. Devonian fossil plant considered one of the earliest forms of vascular land plants; similar to genus Rhynia but smaller (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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