Similar to genus Rhynia but smaller

• Devonian fossil plant considered one of the earliest forms of vascular land plants

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
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 .

Wikipedia Word definitions in Wikipedia
Horneophyton , a member of the Horneophytopsida , is an extinct early plant which may form a "missing link" between the hornworts and the Rhyniopsida . It is among the most abundant organisms found in the Rhynie chert , a Devonian Lagerstätte in Scotland. ...