2015

Gymnocalycium campestre Repka, sp. nov.
Repka, R; Koutecky, P; Vahalik, P. (2015): Gymnocalycium campestre (Cactaceae, Trichocereeae), a New Species from Córdoba, Argentina. - Novon 24(3): p. 280-288
Type: Argentina. Cordoba: Totoral, village of Macha, in pasture with Acacia caven Molina on sandy substrate, ca. 2 km SW of the village, 30°34'42''S, 64°09'57''W, 670 m, 20 Nov. 2012, R. Repka 681 (holotype, CORD-00044293). Figure 2.

Gymnocalycium sutterianum (Schick) Hosseus subsp. arachnispinum Repka, subsp. nov.
Repka, R; Koutecky, P; Vahalik, P. (2015): A New Subspecies and a New Combination in Gymnocalycium sutterianum (Cactaceae, Trichocereeae) from Argentina. - Novon 24(3): p. 274-277
Type: Argentina. Cordoba: Rio Cuarto, Sierra de las Penas Mtns., village of Elena, rockeries ca. 5 km E of village, 32.5744018S, 64.3260808W, 680 m, 24 Jan. 2010, R. Repka 449 (holotype, CORD-1333). Figure 1.

Gymnocalycium sutterianum (Schick) Hosseus subsp. dolezalii (Halda & Milt) Repka, comb. nov.
Repka, R; Koutecky, P; Vahalik, P. (2015): A New Subspecies and a New Combination in Gymnocalycium sutterianum (Cactaceae, Trichocereeae) from Argentina. - Novon 24(3): p. 277-278
Basionym: Gymnocalycium poeschlii Neuhuber subsp. dolezalii Halda & Milt, Acta Mus. Richnov., Sect. Nat., 14(4): 101–102. 2007.
Type: Argentina. Cordoba: ‘‘in summo collis prope Berratorean, solo graminoso ad 800 m supra mare,’’ Sierra de Las Penas Mtns., 3 km NE of Berrotaran, cultivated under field number P 192 [J. Piltz] in collection, July 2015, R. Repka s.n. (neotype designated here, PR 850244).

Gymnocalycium mendozaense Bercht & Schädlich spec. nov.
Bercht, Ludwig, Schädlich, Volker (2015): Gymnocalycium mendozaense spec. nov - an already long known plant from the north of Paraguay. - Gymnocalycium 28(3): p. 1171-1182
Typus: Paraguay, Boqueron, from the slopes of the Cerro Cabrera, 516 m, 20. September 2009.
Herbarium material: cultivated plants grown from seeds collected in the habitat.
Holotypus: Bercht LB 3811 in PY, Isotypus: Schädlich VoS 606 (Herbarium WU).

Echinocactus platensis Spegazzini
Contribucion al Estudio de la flora de la Sierra de la Ventana: 7-8 (1896)
Papsch, W. (2015): Which is the oldest name of the Gymnocalycien species from the Sierras Bayas? - Schütziana 6(2): p. 3-14.
Type: not indicated, description with spine pattern
Neotypus: Argentina, Prov. Buenos Aires, Pdo. Olavarria, Sierras Bayas, leg. W. Papsch WP 112/149, 5.11.2000 (BA, neo) (SI, WU, isoneo), here designated.

Gymnocalycium platense (Spegazzini) Britton & Rose subspec. platense
Papsch, W. (2015): Consequences of the Neotypification of Echinocactus platensis Spegazzini. - Schütziana 6(3): p. 4-10.
Basionym: Echinocactus platensis Spegazzini, Contribucion al Estudio de la flora de la Sierra de la Ventana: 28-29 (1896).
Neotype: Argentinien, Prov. Buenos Aires, Pdo. Olavarria, Sierras Bayas, leg. W. Papsch WP 112/149 (BA, neo).
Synonyms: Gymnocalycium schroederianum subspec. bayense Kiesling; Two new subspecies of Gymnocalycium schroederianum. - Cactus and Succulent Journal (US) 59(1): 48-49 (1987). Type: R. Kiesling & A. G. Lopez 4323, 07.1981, Argentinien, Prov. Buenos Aires, Dept. Olavarria, Sierras Bayas (SI, holo).
Gymnocalycium hyptiacanthum sensu Papsch nom. illeg., Die pampinen Gymnocalycien 3: Gymnocalycium hyptiacanthum (Lemaire) Britton & Rose. - Gymnocalycium 14(1). 385ff (2001).

Gymnocalycium platense subspec. paucicostatum (Kiesling) Papsch comb. nov.
Papsch, W. (2015): Consequences of the Neotypification of Echinocactus platensis Spegazzini. - Schütziana 6(3): p. 4-10.
Basionym: Gymnocalycium schroederianum subspec. paucicostatum Kiesling; Two new subspecies of Gymnocalycium schroederianum. - Cactus and Succulent Journal (US) 59(1): 49 (1987).
Type: A. Schinini & all. 21678, 12.11.1981, Argentinien, Prov. Corrientes, Dept. Curuzu Cuatia, Arroyo Mocoreto (SI, holo). Prov. Corrientes, Dept. Paso de los Libres, Rio Mirinay, 16.11.1979, A. Schinini 17.288 (SI, para), Prov. Entre Rios, Dept. Federacion, Ea. Buena Esperanza, 25.10.1961, T. M. Pedersen 6274 (SI, para).
Synonyms: Gymnocalycium hyptiacanthum subspec. paucicostatum Papsch nom. illeg. Die pampinen Gymnocalycien 3: Gymnocalycium hyptiacanthum (Lemaire) Britton & Rose. - Gymnocalycium 14(1). 385ff (2001).

Gymnocalycium platense subspec. schroederianum (Osten) Papsch comb. et stat. nov.
Papsch, W. (2015): Consequences of the Neotypification of Echinocactus platensis Spegazzini. - Schütziana 6(3): p. 4-10.
Basionym: Gymnocalycium schroederianum Osten, Notas sobre Cactaceas. - Anales del Museo de Historia Natural de Montevideo, 2.Ser. 5(1): 60, pl. XLIX-L (1941).
Type: J. Schröder, 4.1922, Uruguay, Distr. Rio Negro, Nueva Mehlen, Herbarium C. Osten 16-873.
Synonyms: Gymnocalycium hyptiacanthum subspec. schroederianum Papsch nom. illeg. Die pampinen Gymnocalycien 3: Gymnocalycium hyptiacanthum (Lemaire) Britton & Rose. - Gymnocalycium 14(1). 385ff (2001).

Gymnocalycium schmidianum (H. Till & W. Till) Meregalli & Kulhánek, stat. nov.
Massimo Meregalli, Tomáš Kulhánek (2015): Gymnocalycium schmidianum, a good species. Notes on its distribution and ecology and description of a new subspecies. - Schütziana 6(1): p. 3-40.
Basionym: Gymnocalycium catamarcense subsp. schmidianum H. Till & W. Till, 1995, Gymnocalycium 8(1): 145.

Gymnocalycium schmidianum subsp. asperum Meregalli & Kulhánek subsp. nov.
Massimo Meregalli, Tomáš Kulhánek (2015): Gymnocalycium schmidianum, a good species. Notes on its distribution and ecology and description of a new subspecies. - Schütziana 6(1): p. 3-40.
Holotype. Argentina, Catamarca, Fiambalá, 5.5 km north of Mesada de los Zárate, 2642 m, 27°03.983 S, 67°40.471 W, 22.01.2011, MM 1297, M. Meregalli and A. Funetta leg., habitat plant found dead, in good condition (TO-HG).