Epipactis atrorubens is an orchid in the genus Epipactis, commonly called the dark red helleborine. It prefers well-drained, calcareous (alkaline) soils and suits south-facing positions with dry to moderate moisture. Flowering takes place in July–August. The species tolerates both sheltered and exposed sites and carries a UK hardiness rating of H5.

Dark red helleborine (Epipactis atrorubens) prefers well-drained, calcareous alkaline soil and flowers in July–August.

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

Epipactis, or helleborine, is a genus of terrestrial orchids consisting of approximately 70 species. This genus is abbreviated as Epcts in horticultural trade.

Epipactis atrorubens

Dark red helleborine | Epipactis atrorubens

Epipactis gigantea is an orchid that favours moist to wet soils and produces summer flowers with a mild, sweet fragrance. It occurs naturally from Canada to Mexico and suits damp margins and meadows. Plants tolerate partial shade to full sun and prefer neutral to slightly acidic sandy or loamy soils kept moist. Flowering runs July to August in the UK.

Giant helleborine (Epipactis gigantea) is an orchid for moist, sandy or loamy soils that flowers in July–August with a mild, sweet fragrance.

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

Epipactis gigantea

Giant helleborine | Epipactis gigantea

Epipactis helleborine is an orchid whose common name reflects its broad leaves and summer-flowering habit. It belongs to the genus Epipactis within the Orchid family and carries a mild, sweet fragrance. The plant prefers shady to partially shaded positions in neutral to alkaline, moist soils. Flowering occurs in July–August in UK conditions.

Broad-leaved helleborine (Epipactis helleborine) flowers in July–August and suits shady, moist, neutral to alkaline soils in average UK gardens.