Dennstaedtiaceae

Sori linear, marginal. Rhizome clothed with simple or pleuricellular hairs Dennstaedtiaceae

consider the other alternative

Sori orbicular, not confluent, terminal or almost so on the veins

choose this alternative reject this alternative

Indusium absent or with a short, roundish, reflexed false Indusium Hypolepis

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Indusium cup-shaped, outer false indusium fused to the inner indusium Dennstaedtia