Achnanthidium subhudsonis var. kraeuselii (Cholnoky) Cantonati et Lange-Bert., 2017

Kusber, Wolf-Henning, Cantonati, Marco & Lange-Bertalot, Horst, 2017, Validation of five diatom novelties published in “ Freshwater Benthic Diatoms of Central Europe ” and taxonomic treatment of the neglected species Tryblionella hantzschiana, Phytotaxa 328 (1), pp. 90-94 : 90

Achnanthidium subhudsonis var. kraeuselii (Cholnoky) Cantonati et Lange-Bert. , comb. nov. et stat. nov.

≡ Achnanthes kraeuselii Cholnoky in Bot. Not. 1954: 271, fig. 5–10, 1954.

≡ Achnanthes subhudsonis var. kraeuselii (Cholnoky) Cholnoky in Österr. Bot. Z. 103: 56, 1956.

- Achnanthidium subhudsonis var. kraeuselii (Cholnoky) Cantonati et Lange-Bert. in Lange-Bertalot et al. (2017): 92, nom. inval.; a full and direct citation was missing (Art. 41.5, McNeill et al. 2012).

Syntypes: Seven samples near the Debegeni water falls as specified in Cholnoky (1954): “Fundorte 3, 4, 5 (NS), 7, 9 (NS), 10 (NS), 15 (NS)”.

Registration: http://phycobank.org/100108

Note: Cholnoky (1954) published Achnanthes kraeuselii as a new species from Transvaal (Africa). The German description is in accordance with Art. 44.1 (McNeill et al. 2006). Cholnoky cited seven collections which serve as syntypes. When Cholnoky (1956) worked on diatoms from Natal (Africa), he revisited his findings in comparison with Hustedt’s species. Cholnoky (1956) gave his species a new rank as variety and combined it with Achnanthes subhudsonis Hust. ; in addition he provided diagnostic features for Hustedt’s nominate variety Achnanthes subhudsonis Hust. var. subhudsonis . Achnanthes subhudsonis Hust. in Hedwigia 63: 144, fig. 9–12. 1921, as lectotypified by Simonsen (1987), was recombined with Achnanthidium as Achnanthidium subhudsonis H.Kobayasi in Kobayasi et al., Atlas of Japanese Diatoms 1: 129. 2006.