File:EB1911 Pteridophyta - prothalli.jpg

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Description
English: Diagrammatic sketches of prothalli of several types of plants (see legend below).
Date published 1911
Source Encyclopædia Britannica (11th ed.), v. 22, 1911, “Pteridophyta,” fig. 1, p. 605.
Author William Henry Lang
Permission
(Reusing this file)
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 cernuum.

c, L. phlegmaria.

d, L. clavatum.

e, Selaginella.

f, Botrychium virginianum.

g, Helminthostachys.

h, A Fern.

i, Salvinia.

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Date/TimeThumbnailDimensionsUserComment
current16:01, 22 May 2017Thumbnail for version as of 16:01, 22 May 2017783 × 879 (142 KB)Bob Burkhardt{{Information |Description ={{en|1=Diagrammatic sketches of prothalli of several types of plants (see legend below).}} |Source =''Encyclopædia Britannica (11th ed.), v. 22, 1911, “Pteridophyta,” fig. 1, p. 605. |Author =William...
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