Definitions

from the GNU version of the Collaborative International Dictionary of English

  • 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.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. Devonian fossil plant considered one of the earliest forms of vascular land plants; similar to genus Rhynia but smaller

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