2018

Gymnocalycium cabreraense Schädlich, Bercht & Melojer 2018
Schädlich, V.; Bercht, L.; Melojer, M. (2018): A sensational discovery from the utmost northwest of Paraguay – Gymnocalycium cabreraense spec. nov. - Schütziana 9(2): p. 2-16.
Type: Melojer MJ 2010-13 (Herbarium WU 4039, holo). Cultivated plants grown from seeds collected in the habitat.
Paraguay, province Alto Paraguay, Cerro Cabreara, 482 m.

Gymnocalycium carminanthum Borth & Koop ex Papsch 2018
Papsch, W. (2018): About the nomenclatural status of Gymnocalycium carminanthum. -Schütziana 9 (3): 11 illus.
Gymnocalycium carminanthum Borth & Koop 1976
Holotype: Hans Borth BO 130 ex coll. W. Papsch, Argentina, Prov. Catamarca, Los Ángeles, 1700 m s.m.; leg. Hans Borth 1973 (Universalmuseum Joanneum Graz, GJO, holo).
Argentina, prov. Catamarca, Los Ángeles, 1700 m s.m.

Gymnocalycium friedrichii subsp. tumaemulticostatum Milt 2018
Milt, I. (2018): Gymnocalycium friedrichii subsp. tumaemulticostatum Ivan Milt subsp. nova. - Cactaceae etc. 28(1): p. 7-9.
Type: B 171.826 in the Herbarium of the Regional Museum Olomouc (holo); thr type culture in the collection of Ivan Milt, the original collect VoS 03-064 (volker Schädlich).
Bolivia, Santa Cruz, Ipitacuape

Gymnocalycium lamudanaense Chvastek & Milt 2018
Milt, I. (2018): Gymnocalycium lamudanaense Chvastek et Milt spec. nov. - Cactaceae etc. 28(4): p. 125-128.
Holotyp: CHv 1089, (inv. nr. B172327, Regional Museum in Olomouc (CZ), holo).
Argentina, province Córdoba, La Mudana area.

Gymnocalycium ourselianum (Monville) Papsch 2018
Papsch, W. (2018): To whom is the authorship of Echinocactus ourselianus to be attributed? - Schütziana 9(1): 7.
Echinocactus ourselianus Monville 1843

Gymnocalycium sanluisense Neuhuber 2018
Neuhuber, G. (2018): Gymnocalycium sanluisense. - Kaktus Klub (2): p. 14-17.
Type: Argentina, province San Luis, north of La Carolina, Peñon Colorado, 1530 m s.m., leg. G. Neuhuber GN 11-1564/4737, 17.11.2011; Holotype CORD: GN 11-1564/4737, Flower in alcohol Nr. 3856; Paratypes WU: GN 11-1564/4737, Flower in alcohol Nr. 4085, GN
Argentina, province San Luis, north of La Carolina, Peñon Colorado, 1530 m s.m.

Gymnocalycium sutterianum subsp. tetraploideum Řepka 2018
Řepka, R. (2018): Gymnocalycium sutterianum subsp. tetraploideum Řepka, eine neue Unterart aus der argentinischen Provinz Córdoba. - Gymnocalycium 31(1): p. 1259-1272.
Type: Argentina, north-central, Córdoba Prov., Dept. Calamuchita, San Antonio Arroyo Corto, in dry pasturewith protruding flat rocks, 5,6 km WNW of the town of La Cruz, 32°17'02.1'' S, 64°32'33.0'' W, 552 m s.m., 27. November 2016, coll. R. Řepka (RER 798
Argentina, north-central, Córdoba Prov., Dept. Calamuchita, San Antonio Arroyo Corto, 5,6 km WNW of the town of La Cruz.