Type (lectotype, designated here):—[icon]: Icon. Desc. Pl. 2: tab. 125. 1793.
Cavanilles (1793) described this species from the Sagunto area of Spain (“Habitat in Saguntinae arcis vetustissimo muro”). The iconography is original material for the name and perfectly depicts all of the morphological details of this species. I was not able to trace further original materials. For this reason the iconography is selected as the lectotype. The lectotype confirms the current application of the name (e.g. Chater & Cartier 1976, Pignatti 1982).