This means that they spend part of their life cycle as a haploid gametophyte, and the other part as a diploid sporophyte. families For example, "Lycopodiophyta" and the shorter "Lycophyta" as well as the informal "lycophyte" may be used to include the extinct zosterophylls or to exclude them. Sori The young sporophyte remains in physical contact with the megaspore and the enclosed female gametophyte tissue for some time. Todays club mosses are diminutive, evergreen plants consisting of a stem (which may be branched) and microphylls (leaves with a single unbranched vein). In most animals, only the diploid stage is multicellular, and gametes are the only haploid cells. Monilophyte mitochondrial rps1 genes carry a unique group II intron Difference Between Bryophytes and Ferns Are lycophytes and monilophytes monophyletic? - KnowledgeBurrow Please select which sections you would like to print: Curator of Ferns, New York Botanical Garden, Bronx. . The processes of sexual reproduction of Isoetes are very similar to those of Selaginella, except that the sperm are multiflagellate and many more spores are formed per sporangium. Pteridophyte - Wikipedia Additionally, we would like to thank Paul Kron and Carole Ann Lacroix for assistance in locating and identifying specimens, to Benjamin Yim for field and lab support, and to the staff at the rare Charitable Research Reserve for access to specimens on their property. are clusters of sporangia on the underside of fern leaves. Google Scholar, Moran RC (2008) Diversity, biogeography, and floristics. families Caryologia 21:8389, De Veylder L, Beeckman T, Inz D (2007) The ins and outs of the plant cell cycle. Pteridophytes differ from bryophytes in that the sporophyte is branched and generally much larger and more conspicuous, and from seed plants in that both generations are independent and free-living.
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