Century Dictionary and Cyclopedia
- A division of the vegetable kingdom including the ferns and their allies; the vascular cryptogams. See Cryptogamia, and compare Bryophyta.
GNU Webster's 1913
- n. (Bot.) A class of flowerless plants, embracing ferns, horsetails, club mosses, quillworts, and other like plants. See the Note under cryptogamia.
- n. containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta
“He was a leading authority on the pteridophyta, and collected a large and choice herbarium of the native ferns, which he donated to the Massachusetts Horticultural”
“Has specialized in scientific work on the pteridophyta, distinguishing himself by the excellence as well as by the large number of his publications, the more important being "Studies of”
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