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nountype genus of the Rhyniaceae; small leafless dichotomously branching fossil plants with terminal sporangia and smooth branching rhizomes
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Definition that contains rhynia
- genus horneophyton Devonian fossil plant considered one of the earliest forms of vascular land plants; similar to genus Rhynia but smaller
- genus rhynia type genus of the Rhyniaceae; small leafless dichotomously branching fossil plants with terminal sporangia and smooth branching rhizomes
- horneophyton Devonian fossil plant considered one of the earliest forms of vascular land plants; similar to genus Rhynia but smaller
- rhynia type genus of the Rhyniaceae; small leafless dichotomously branching fossil plants with terminal sporangia and smooth branching rhizomes