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English: Illustration from Diatomaceae of Philadelphia and Vicinity. Original description follows:


PLATE 22

Fig.
1 Pleurosigma strigosum Wm. Sm.
2 Pleurosigma rigidum Wm. Sm.
3 Pleurosigma angulatum (Quekett) Cl.
4 Pleurosigma obscurum Wm. Sm.
5 Pleurosigma formosum Wm. Sm.
6 Pleurosigma naviculaceum Bréb.
7 Pleurosigma æstuarii Bréb.
8 Pleurosigma virginiacum H. L. Smith
Date
Source https://archive.org/details/diatomaceofphi00boye
Author Charles Sumner Boyer (1856-1928).

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Public domain

The author died in 1928, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 95 years or fewer.


This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1930.

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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current10:21, 3 January 2014Thumbnail for version as of 10:21, 3 January 20142,350 × 3,000 (269 KB)Keith Edkins=={{int:filedesc}}== {{Information |Description={{En|Illustration from Diatomaceae of Philadelphia and Vicinity. Original description follows: PLATE 22 <table> <tr> <td style{{=}}"vertical-align:top;">Fig.</td> </tr> <tr> <td style{{=}}"vertical-al...

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