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Athyrium

Reference: Kato (1993a).

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A. nipponicum
1a. Leaf variegated, such that the distal portion of the leaflets (or much of the plant) suffused with gray to silver
See list of 2 species in 1b
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1b. Leaf not variegated, the blade green
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  A. angustum
  2a. Petiole scales brown to black-brown; leaf blades elliptic, narrowed to the base, broadest near or just below the middle; leaflets sessile or short-stalked; leafules linear to oblong; indusia ciliate with non-glandular hairs (though the sporangial stalks do have glandular hairs); spores yellow
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  A. asplenioides
  2b. Petiole scales light brown to brown; leaf blades broad-lanceolate to lanceolate, only slightly narrowed to the base, broadest just above the base; leaflets generally stalked; leafules oblong-lanceolate to narrow-triangular; indusia ciliate with glandular or non-glandular hairs; spores dark brown

Show photos of: Each photo represents one species in this genus.