Bryoria implexa is a species of horsehair lichen in the family Parmeliaceae.

Bryoria implexa has a dark brown or olive colour.

The thallus is cylindrical and hairlike, 5–10 cm long and hanging.

[2] The native distribution of Bryorya implexa is North-America and Europe,[3] including Iceland where it has only been found in one location, Gálgahraun in Álftanes, where its preferred habitat is lava rock.

[2] Bryoria implexa is red listed in Iceland as critically endangered (CR) due to it being found in only one location in the country.