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1 Leaves 1-pinnate to 1-pinnate-pinnatifid (the pinnae entire or pinnatifid); sori elongate, 2.5-6× as long as wide, even the larger sori generally straight and not extending across the veins. | |
3 Veins free, simple or forked. | |
4 Rhizomes short-creeping to ascending; leaves variegated, silvery gray and gray-green; [exotic, rarely persisting or naturalizing] | |
4 Rhizomes erect; leaves not variegated, bright green; [native and widespread, sometimes cultivated] |