Iconella nervosa (A.W.F. Schmidt) Cocquyt & R. Jahn, 2017

Jahn, Regine, Kusber, Wolf-Henning & Cocquyt, Christine, 2017, Differentiating Iconella from Surirella (Bacillariophyceae): typifying four Ehrenberg names and a preliminary checklist of the African taxa, PhytoKeys 82, pp. 73-112 : 86

Iconella nervosa (A.W.F. Schmidt) Cocquyt & R. Jahn comb. nov.

≡ Surirella tenera var. nervosa A.W.F. Schmidt, Atlas Diatom.-Kunde, pl. 23: fig. 15. 1875.

≡ Surirella nervosa (A.W.F. Schmidt) Ant. Mayer in Ber. Naturwiss. Vereins Regensburg 14: 341. 1913.

Lectotype

(here designated). [icon!] A.W.F. Schmidt, Atlas Diatom.-Kunde, pl. 23: fig. 15. “Whatabevot”

http://phycobank.org/100073

Taxonomical comment.

From two different localities A.W.F. Schmidt (1875) depicted three valves with an axial area including a central line and spines at both ends of this line. The valve depicted as pl. 23: fig. 15 fits the criterium "illustration with analyses" ( McNeill et al. 2012, Art. 38.10) because many small spinules on the valve surface are clearly shown. Therefore we have choosen pl. 23: fig. 15 as the lectotype. fig. 16 is less detailed. We exclude the depicted specimen collected at Khayenmatay (fig. 17) from the species because with its denser costae and less distinct wing projection it probably belongs to a different species.