Arum cylindraceum Gasp. subsp. pitsyllianum Hadjik., Hand & G. Mans. (Araceae), a rare Cypriot endemic, is described as new. This diploid taxon differs from A. cylindraceum s. str. by the spathe tube that is whitish to greenish white internally with a pale purple horizontal strip just above the base and 3–4 cm long, the spadix, which is orange to orangish purple, and the anthers and connectives that are orange.