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Showing 1 to 1 of 1 for “"Ferns California"”.
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A comparative study of the leaf epidermis of forty-two native California ferns
… old famliy Polypodiaceae, as represented by the ferns of California, into five families. The classification of Munz and Keck is the most recent treatment in this paper.</p>Historically, classification of the leptosporangiate ferns has been based on the sorus, but the last half century has seen …