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Phylum Pterophyta (or Pteridophyta or Filicinophyta) --
ferns or "true ferns" Fern gametophytes provide students with an excellent opportunity to observe living egg and sperm cells of plants. Most gametophytes, when kept moist, will produce large numbers of gametangia (sex organs) which can be seen easily with a light microscope. Genus Thelypteris |
Thelypteris or river fern is native to central Texas and increasingly used as an ornamental. |
Thelypteris, fertile leaf |
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