1. Devonian fossil plant considered one of the earliest forms of vascular land plants; similar to genus Rhynia but smaller; [syn: Horneophyton, genus Horneophyton]
WordNet (r) 3.0 (2006):
genus 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]