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PLATYZOMA—A QUEENSLAND FERN WITH INCIPIENT HETEROSPORY
Author(s) -
Tryon Alice F.
Publication year - 1964
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1964.tb06721.x
Subject(s) - fern , sporophyte , biology , polypodiaceae , gametophyte , botany , spore , genus , subfamily , frond , pteridophyte , pollen , biochemistry , gene
First record is made of a dioecious condition in the heterosporous, terrestrial fern Platyzoma microphyllum R. Br. from northern Australia. The spores, gametophytes and young sporophyte are described and the role of heterospory and dioecism in these plants is discussed. The genus is newly classified as a subfamily Platyzomatoideae in the Polypodiaceae.