Medullosaceae

Medullosaceae

[mə′dəl·ō′sās·ē‚ē]
(paleobotany)
A family of seed ferns; these extinct plants all have large spirally arranged petioles with numerous vascular bundles.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Bases for determining relationships among the Medullosaceae. Am.