File:EB1911 Pteridophyta - spore-producing members.jpg

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Description
English: Diagrammatic sketches of spore-producing members of various genera of Pteridophyta (see legend below).
Date published 1911
Source Encyclopædia Britannica (11th ed.), v. 22, 1911, “Pteridophyta,” fig. 2, p. 606.
Author William Henry Lang
Permission
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Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.
English: Legend:

a, Equisetum.

b, Lycopodium.

c, Psilotum.

d, Ophioglossum.

e, Kaulfussia.

f, Angiopteris.

g, Nephrodium.

h, Salvinia.

(All except d represent vertical sections of sporangiophore or sorus.)

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current17:16, 26 May 2017Thumbnail for version as of 17:16, 26 May 2017799 × 795 (197 KB)Library Guy (talk | contribs){{Information |Description ={{en|1=Diagrammatic sketches of spore-producing members of various genera of Pteridophyta (see legend below).}} |Source =''Encyclopædia Britannica'' (11th ed.), v. 22, 1911, “Pteridophyta,” fig. 2, p. 606. |A...

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