1. type genus of the Rhyniaceae; small leafless dichotomously branching fossil plants with terminal sporangia and smooth branching rhizomes; [syn: Rhynia, genus Rhynia]
WordNet (r) 3.0 (2006):
genus Rhynia
n 1: type genus of the Rhyniaceae; small leafless dichotomously
branching fossil plants with terminal sporangia and smooth
branching rhizomes [syn: Rhynia, genus Rhynia]