(1) As in other cryptogam species, the effect of polarized red light implies that phytochrome acts at the cell periphery.(2) However, the cell walls of cryptogamous plants, such as bryophytes and pteridophytes, have received little attention, and so the peculiarities of the wall-polysaccharides in these plants have yet to be fully understood.(3) The total number of fossil plants catalogued from those beds, cryptogamous as well as phænogamous, is upward of three thousand.(4) Ferns and fern allies are cryptogamous plants of the phylum Polypodiophyta.(5) Fern is a common name for the cryptogamous , or spore-producing, plants belonging to the division Filicophyta, also called Filicinophyta.(6) The Myxomycetes represent the only group of cryptogams with species only known from the tree canopy.(7) This has resulted in a rich vegetation mosaic comprising approximately 1,500 species of flowering plants, including 130 trees, and an estimated 2,200 cryptogamous taxa.(8) In this subzone, herbaceous dicots, grasses, rushes, and cryptogams are dominant, and woody plants and sedges are absent.(9) Students rotated from one scientist to another, assisting with data collection, and gained insight into each scientist's particular area (wetland ecology, cryptogams , syntaxonomy, floristics, or natural history).
