Polypodium australe is a fern that reaches about 0.6 metres and is native to southern and western Europe, the Mediterranean Basin and Atlantic Europe. It favours shady, sheltered sites with rocky, well-drained yet moist soil. Place it on north- or east-facing banks, in rock gardens or shaded borders. Its fronds form a compact, low-level presence suited to cool, protected corners.

Southern polypody (Polypodium australe) suits shady, sheltered sites on rocky, moist, well-drained soil.

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

Polypodium is a genus of ferns in the family Polypodiaceae, subfamily Polypodioideae, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I). The genus is widely distributed throughout the world, with the highest species diversity in the tropics.

Polypodium australe

Southern polypody | Polypodium australe

Polypodium australe 'Cambricum' is a fern in the Polypodiaceae that reaches about 0.6 metres and suits shaded, sheltered positions. It performs on well-drained, rocky and calcareous soils with an alkaline pH. Plants prefer moist conditions and north- or east-facing aspects. Use it where shade and limey, rocky soil coincide.

Southern Polypody Polypodium australe 'Cambricum' is a shade-loving fern for moist, alkaline, well-drained and rocky north or east-facing sites.

Polypodium australe 'Cambricum'

Southern Polypody | Polypodium australe 'Cambricum'

Polypodium interjectum is a fern that prefers shade to partial shade and suits sheltered positions. It grows best in moist, well-drained, humus-rich soils with an acidic to neutral pH. Native to parts of Belgium, Luxembourg, Madeira and mainland Portugal, it remains present through winter. Plant where soil and site conditions match its preference for shelter and steady moisture.

Intermediate polypody (Polypodium interjectum) is a shade-loving fern that favours moist, humus-rich, acidic to neutral soils.

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

Polypodium interjectum

Intermediate polypody | Polypodium interjectum

Polypodium vulgare 'Cornubiense' is a fern used as a low, shade-tolerant ground cover, typically reaching around 0.3 m. It prefers full shade or deeply shaded sites and performs on sandy, loamy or clay soils that are well-drained yet retain some moisture. The cultivar is classed H7 (fully hardy) and is also mapped to USDA zones 3–6. Its compact habit suits rock gardens, woodland edges and shaded banks.

Crested polypody (Polypodium vulgare 'Cornubiense') is a shade-loving fern used as ground cover in rock and woodland gardens.

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

Polypodium vulgare 'Cornubiense'

Crested polypody | Polypodium vulgare 'Cornubiense'

Polypodium vulgare 'Longicaudatum' is a fern in the Polypodiaceae that favours shaded sites and reaches about 0.3 m. It tolerates a wide range of soils — sandy, loamy or clay — provided they remain well drained yet retain some moisture. The cultivar is hardy in UK gardens and also suited to USDA zones 3–6. Planting in deep shade will suit its light requirements.

Polypodium vulgare 'Longicaudatum' is a shade fern c.0.3 m tall that prefers well-drained, moist sandy to clay soils and is fully hardy in the UK.