It is native to the western Mediterranean Basin (Iberian Peninsula and northwest Maghreb).

The spadix, a rod-like structure bearing the individual flowers, is protected by a special bract (the spathe) shaped as a tube of 3–1.5 centimetres (1.18–0.59 in), wide at the bottom, with purple spotting, and curved upper part, in the shape of a helmet tilted forward.

[4] Inflorescence is 0.7–2 by 1–2.4 centimetres (0.28 in–0.79 in × 0.39 in–0.94 in) with a stalk of 4–22.6 by 0.1–0.6 centimetres (1.575 in–8.898 in × 0.039 in–0.236 in), generally flexible and thin; upright spathe with the margins of the bottom joined together forming a closed tube with 2–6 centimetres (0.79–2.36 in) that ends in the form of a hood, smooth or papillary at the margin, with longitudinal nerve, purple in the apex becoming progressively less pigmented and paler towards the base.

[4] Arisarum simorrhinum is native to most of Portugal, western Spain, Morocco and northwestern Algeria.

It is a nitrophile and occurs on acidic and basic soils often on disturbed ground and on sandy soils in pasture, clearings in scrub and woodland, on road sides and ditch margins, cultivated land and among rocky outcrops from sea level up to 840 metres (2,760 ft) in altitude.