original description
De Stefani, C.; Forsyth Major, C. I.; Barbey, W. (1891). Samos. Etude géologique, paléontologique et botanique. Georges Bridel, Lausanne, 99 + 14 pls., available online at https://books.google.de/books?id=LHSqugEACAAJ
page(s): 76, pl. 14, figs 11-14 [details]
From editor or global species database
Type locality De Stefani et al. (1891) listed several locality around Mytilinii, but it's unclear which of those correspond to the species and which to the variety nasseana. In the plate captions, Mytilinii ["Mitylini"] is listed for both the species and the variety. [details]