English: Bulblet fern; Bulblet bladderfern; Bulblet fragile fern.
Clades: Cystopteridaceae.
Region: eastern Canada, Midwestern and Eastern United States, Southwestern United States.
Habitat: calcareous substrates, limestone, limestone cave openings; on vertical rock faces, also in rocky scree.

BotanyFern; low-growing.
Stem: creeping.
Leaves: narrow elongate deltate fronds; up to 75 cm; producing bulblets along the bottom of the fronds.