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Besides that, their spores are quite distinct, with those of Asplenium martianum showing alate folds and echinulate wings (Fig.
Subgenus Rhopalotricha also differs by having spores with broadly folded perispores with echinulate surfaces (vs.
0 mm long, 4-or 5-celled, spreading, the glands few, stalked, yellowish; indusia absent; spores echinulate.