| http://www.w3.org/ns/prov#value | - Also, in the herbarium of the Department of Botany at the Academy of Natural Sciences, there is a collection that arrived via the Wm Wynne Wister herbarium in 1899, that says on its label ???Wissahickon ??? Wister??? with a date of ???Jun 7, 1863???; and so that might be its earliest recorded date ??? however, because Keller and Brown (1905) don???t have I. opaca as being in Philadelphia, and this
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