¹ Source: wiktionary.com
Definition of Pteridosperms
1. pteridosperm [n] - See also: pteridosperm
Lexicographical Neighbors of Pteridosperms
Literary usage of Pteridosperms
Below you will find example usage of this term as found in modern and/or classical literature:
1. The Encyclopaedia Britannica: A Dictionary of Arts, Sciences, Literature and (1911)
"Ferns " and pteridosperms are even more strongly represented than before, and
this is the age in which the supposed ..."
2. The Encyclopedia Britannica: A Dictionary of Arts, Sciences, Literature and by Hugh Chisholm (1911)
"Ferns " and pteridosperms are even more strongly represented than before, ...
of plants to which the name pteridosperms has recently been assigned—plants ..."
3. Geology, Physical and Historical by Herdman Fitzgerald Cleland (1916)
"The important difference between these families lies in tht reproduction, the
true fern producing spores and the pteridosperms, seeds. FIG. 468. ..."
4. The Evolution of Plants by Dukinfield Henry Scott (1911)
"This is the gap below the pteridosperms. How were these plants derived from Ferns
... These are questions which may never be fully solved, for pteridosperms ..."
5. The Plant World by Plant World Association, Wild Flower Preservation Society (U.S.) (1916)
"Among the pteridosperms we have the typical ... It is true that the pteridosperms
do clearly indicate the character of the ancestral stock that leads to ..."
6. Botanical Gazette by University of Chicago, JSTOR (Organization) (1907)
"It discusses the bearing of recent investigations of the pteridosperms and cycads
on the origin of seed-plants. Attention is called to the fact that the ..."
7. The Origin of a Land Flora: A Theory Based Upon the Facts of Alternation by Frederick Orpen Bower (1908)
"The question is mainly one of the state of advancement reached by any given
fossil, for it may be presumed that the pteridosperms sprang ultimately from a ..."
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