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collage of Philadelphia Fleabane and Oakleaf Fleabane

Philadelphia Fleabane (Erigeron philadelphicus) vs. Oakleaf Fleabane (Erigeron quercifolius)

Updated May 11th, 2023

These two species can be confused in their relatively narrow range of overlap. Both are found on moist sites, both tend to have a dense rosette of basal leaves of roughly similar size, and both have narrower, more numerous rays than other fleabanes. Because many of the characteristics used to distinguish these species have significant variation from plant to plant, and overlap between the two species, it is important to look at multiple features before making an ID. E. philadelphicus ranges much farther north and west, and prefers richer, finer-textured soils, whereas E. quercifolius is restricted to the southeastern coastal plain, ranges farther southeast, through all of peninsular Florida, and prefers sandy soils.

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