Thelypteris is a genus of ferns in the subfamily Thelypteridoideae, family Thelypteridaceae, order Polypodiales. Two radically different circumscriptions of the genus are in use as of January 2020.

Thelypteris is a hardy H7 fern ideal for shaded areas, adding architectural interest to cottage gardens, patios, and flower borders in spring and summer.

Thelypteris

Thelypteris limbosperma is a fern native to Europe that favours shaded, sheltered positions. It grows best in moist, well-drained loamy soils with an acidic to neutral pH. Rated H7, it is fully hardy in the UK when sited out of exposed conditions. It is commonly used in woodland and shade gardens as a border or understorey plant.

Sickle Fern (Thelypteris limbosperma) thrives in shaded, moist, acidic to neutral soils and is fully hardy in the UK.

Thelypteris limbosperma

Sickle Fern (Thelypteris limbosperma) | Shade Fern

Thelypteris palustris, the marsh fern, is a fern adapted to marshy or consistently wet ground. It typically forms upright fronds to about 0.8 m and produces new growth in spring and summer. Plant in soils that stay wet or at least moist but well drained, in full sun. It is fully hardy (H7) and corresponds to USDA zones 4–8.

Marsh fern (Thelypteris palustris) prefers persistently wet or moist soils in full sun and is fully hardy (H7), ideal for damp borders and marshy garden.

https://en.wikipedia.org/wiki/Thelypteris_palustris

Thelypteris palustris

Marsh Fern (Thelypteris palustris) | For Wet Sites

Thelypteris rupestris is a cultivar of Thelypteris, a genus of deciduous, rhizomatous ferns known as maiden ferns. This clump-forming fern features vibrant green, divided fronds that may curl or twist, adding architectural interest to the garden. It thrives in moist, humus-rich soil under full or partial shade, favouring sheltered positions with a range of soil types and pH levels. Hardy to UK zone H7, it is suitable for cottage and informal gardens, patios, containers, and flower borders, with its season of interest spanning spring and summer.

Thelypteris rupestris is a hardy maiden fern with vibrant green fronds, ideal for shaded gardens and adding architectural interest in spring and summer.