Orchis militaris

Orchis militaris, commonly known as the military orchid, is a terrestrial orchid recognized for its dense, purplish inflorescence. Its sepals and side petals fuse to form a pointed, helmet-like structure that gives the plant its name.

It is native to Europe and parts of Asia, with a range extending from Britain across the Palearctic to Siberia and Mongolia. The plant thrives in dry, calcareous habitats such as unfertilized meadows, light woods, and alpine lawns up to 2000 meters in elevation.

The tubers contain the nutritious polysaccharide glucomannan and are traditionally ground into a powder to make the beverage salep. It is also valued as a wild ornamental plant, though it is legally protected in areas like Britain due to its rarity.

In traditional folk medicine, the mucilaginous tubers were prepared as a demulcent to soothe the digestive tract. The resulting salep powder was historically consumed as a restorative and nutritive tonic.

The specific epithet 'militaris' references the flower's resemblance to a military helmet. Like many orchids with paired tubers, it was historically associated with fertility folklore and aphrodisiac properties under the Doctrine of Signatures.