What’s Green Now? Rock Polypody

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Polypodium virginianum; Polypodiaceae

There are a few native ferns that are evergreen: ebony spleenwort, some of the woodferns (Dryopteris species), Christmas fern (in milder winters).  I’ve seen a few around but haven’t been able to identify them.  Rock polypody is pretty easy, though.  I love how it grows right out of stone, needing very little soil. Being a fern, of course, it won’t flower, but here’s how it looks in mid July:

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There are vast stands of it on the rocky bluffs around Carderock.

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