eusporangiate


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eusporangiate

[¦yü·spə¦ran·jē‚āt]
(botany)
Having sporogenous tissue derived from a group of epidermal cells.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Fern Clade #3 consists of the eusporangiate ferns Ophioglossum + Botrychium (i.e., Ophioglossales) as sister group to the eusporangiate marattialean ferns plus the leptosporangiate ferns.
Clades of interest include stauropterid ferns (Fern Clade #1), cladoxylopsid ferns plus Rhacophyton + zygopteridalean ferns (Fern Clade #2), and eusporangiate plus leptosporangiate ferns with living and extinct representatives (Fern Clade #3), ophioglossalean ferns, marattialean ferns, and leptosporangiate ferns (i.e., filicalean plus hydropteridalean ferns).
FOSSILS AND FERN PHYLOGENY
Observations on shoot apices of eusporangiate ferns.
Anatomy and development of the fern sporophyte

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