Horneophyton n 1: Devonian fossil plant considered one of the earliest forms of vascular land plants; similar to genus Rhynia but smaller [syn: {Horneophyton}, {genus Horneophyton}]
Horneophyton \Horneophyton\ n. A genus of Devonian fossil plants considered one of the earliest forms of vascular land plants; it is similar to genus {Rhynia} but smaller. Syn: genus {Horneophyton}. [WordNet 1.5]