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Definition of Pteridospermae
1. Noun. Used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales.
Generic synonyms: Taxon, Taxonomic Category, Taxonomic Group
Lexicographical Neighbors of Pteridospermae
Literary usage of Pteridospermae
Below you will find example usage of this term as found in modern and/or classical literature:
1. Botanical Gazette by University of Chicago, JSTOR (Organization) (1907)
"The author in his discussion of the Filicales makes a strong stand against the
tendency to include all paleozoic fili- coid plants in the pteridospermae. ..."
2. The Principles of Christian Apologetics: An Exposition of the Intellectual by Thomas Joseph Walshe (1919)
"Having reached the Fern order, is the transition legitimate from them to the
recently discovered pteridospermae ? And finally, by aid of the Strobilus ..."
3. The Encyclopedia Americana: A Library of Universal Knowledge (1919)
"... or pollen sacs of the anthers,—are low on the fronds, and only slightly modified
as compared with the vegetative leaves in pteridospermae. ..."
4. Encyclopaedia Britannica, a Dictionary of Arts, Sciences, Literature and edited by Hugh Chisholm (1910)
"... like plants which produced true seeds of a highly specialized type; this group,
for which Oliver and Scott proposed the term pteridospermae in 1904, ..."
5. The Plant World by Plant World Association, Wild Flower Preservation Society (U.S.) (1916)
"The pteridospermae are the more primitive of the two and show every evidence of
fern ancestry. Their stems were known for a generation or more before the ..."
6. The Plant World by Plant World Association, Wild Flower Preservation Society (U.S.) (1918)
"Then follow three chapters devoted to the pteridospermae. ... to his pteridospermae
and the scarcely to be distinguished genus C ..."
7. What Comes from What; Or, The Relationships of Animals and Plants by Charles L. Abbott (1922)
"... branch of the ancient ferns, the pteridospermae (Seed-ferns), acquired the
habit of producing seeds, and are therefore classed with the Gymnosperms. ..."
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