A Portuguese Iris ?

A Portuguese Iris ?

Observation - A Portuguese Iris ?. Description: This plant was seen in the Alentejo region of Portugal, near Santa Clara Reservoir. Approx. 150mm high, flower approx. 30mm across, no obvious leaves. The flower definitely looked like an iris and colour as photo. The area in was found in is 'heathland

This plant was seen in the Alentejo region of Portugal, near Santa Clara Reservoir. Approx. 150mm high, flower approx. 30mm across, no obvious leaves.
The flower definitely looked like an iris and colour as photo.
The area in was found in is 'heathland/grassland' with a lot of cork oak trees growing nearby.