original description(ofHelix (Helicella) polymorpha var. depressiuscula R. T. Lowe, 1831)Lowe, R. T. (1831). Primitiae faunae et florae Maderae et Portus Sancti; sive species quaedam novae vel hactenus minus rite cognitae animalium et plantarum in his insulis degentium breviter descriptae. <em>Transactions of the Cambridge Philosophical Society.</em> 4 (1): 1-70, pl. 1-6. Cambridge., available online athttps://www.biodiversitylibrary.org/page/13265840 page(s): 54, Tab. 6, Fig. 12 [details]
basis of recordBank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16th, 2017.[details]
Present Inaccurate Introduced: alien Containing type locality