noun
type genus of the Rhyniaceae; small leafless dichotomously branching fossil plants with terminal sporangia and smooth branching rhizomes
• Syn: ↑genus Rhynia
• Hypernyms: ↑fern genus
• Member Holonyms: ↑Rhyniaceae, ↑family Rhyniaceae
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\\ˈrīnēə\ noun1. capitalized : a genus (the type of the family Rhyniaceae) of small leafless dichotomously branching fossil plants with terminal sporangia, a primitive stele, and smooth branching rhizomes — compare horneophyton
Useful english dictionary. 2012.