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  1. NLM Digital Collections - Chronological history of plants : man's record of his own existence illustrated through their ... 
    Publication: Boston : Little, Brown and Company, 1879
    resource.nlm.nih.gov/60911110R
    ... frequent on forest-trees in North America. IJsnea barbata of Europe and the adjoining portion of Asia. Perhaps included in the “phaskdn ” of Theophrastus: — U. barbata was observed by Sibthorp, and Bory, in the ...