Fern ID: Rock Polypody

Rock Polypody (Polypodium virginianum) is a small evergreen fern found on or near -- you guessed it -- rocks. The fronds grow singly from points along a rhizome, rather than from a common center (like Marginal Wood Fern). I found this colony growing alongside a large bounder within a small grove of Eastern Red Cedars (Juniperus virginiana) near the summit of Sweatt Hill in Wrentham, MA. The spore-bearing sori look like fuzzy dots on the backsides of the fertile fronds.

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