File:Silphium integrifolium-linedrawing.png

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Description Silphium integrifolium
Date
Source An illustrated flora of the northern United States, Canada and the British Possessions. Courtesy of Kentucky Native Plant Society.
Author Nathaniel Lord Britton (1859-1934), and A. Brown
Permission
(Reusing this file)
Public domain

The author died in 1934, 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 80 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, 1929.

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

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current19:35, 23 June 2008Thumbnail for version as of 19:35, 23 June 20081,599 × 2,000 (202 KB)CarolSpears (talk | contribs){{B&B 1913 | genus= Silphium | species= integrifolium }}