• WordNet 3.6
    • n Spermatophyta seed plants; comprises the Angiospermae (or Magnoliophyta) and Gymnospermae (or Gymnospermophyta); in some classification systems Spermatophyta is coordinate with Pteridophyta (spore producing plants having vascular tissue and roots) and Bryophyta (spore producing plants lacking vascular tissue and roots)
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Webster's Revised Unabridged Dictionary
    • n. pl Spermatophyta (Bot) A phylum embracing the highest plants, or those that produce seeds; the seed plants, or flowering plants. They form the most numerous group, including over 120,000 species. In general, the group is characterized by the marked development of the sporophyte, with great differentiation of its parts (root, stem, leaves, flowers, etc.); by the extreme reduction of the gametophyte; and by the development of seeds. All the Spermatophyta are heterosporous; fertilization of the egg cell is either through a pollen tube emitted by the microspore or (in a few gymnosperms) by spermatozoids.The phrase “flowering plants” is less distinctive than “seed plants,” since the conifers, grasses, sedges, oaks, etc., do not produce flowers in the popular sense. For this reason the terms Anthrophyta Phænogamia, and Panerogamia have been superseded as names of the phylum by Spermatophyta.
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Century Dictionary and Cyclopedia
    • spermatophyta A great group or phylum, the highest in the vegetable kingdom, embracing the seed-bearing plants. It is the same as the Phanerogamia of the older botanists, all properly flowering plants also bearing seeds, and as this latter character is now regarded as the more fundamental one, the name Phanerogamia is being generally abandoned. It is also equivalent to the Embryophyta Siphonogama of Engler. Sometimes shortened to Spermaphyta. The form Spermophyta is no longer used. See Phanerogamia and Embryophyta.
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Webster's Revised Unabridged Dictionary
NL.; spermato-, + Gr. plant


In literature:

In modern botanical works the group is often known as the seed-plants (Spermatophyta).
"Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5" by Various