Volume 1, Issue 1, 2010 ISSN 2191-3099 - Schütziana

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Not for everybody is it possible to visit Gymnocalycium in South America. In this and following articles I want to present interesting plants in their natural surroundings. During our trip to Argentina in January 2010 (Volker Schädlich, Germany; Thomas Strub, Switzerland and me) we wanted to investigate some species of the subgenus Gymnocalycium (sensu Metzing, Ovatisemineum sensu Schütz) from North Córdoba, Argentina. One special point was to visit the different populations of the three subspecies of Gymnocalycium parvulum (Spegazzini) Spegazzini comprising G. parvulum ssp. agnesiae F. Berger (Berger 2010), G. parvulum ssp. amoenum (H. Till) F. Berger (Berger 2008) and G. parvulum ssp. huettneri F. Berger (Berger 2008). All populations of the G. parvulum aggregate, as far as we found it, are domiciled in province Córdoba at altitudes between 800-1200 m. To be complete let’s start with a picture of the specie G. parvulum ssp. parvulum, which we found at different locations around Mina Clavero (Fig. 2). Fig. 2: G. parvulum ssp. parvulum in early morning sun, 1.5 km north of Nono, prov. Córdoba Gymnocalycium parvulum ssp. amoenum (H. Till) F. Berger Described as a variety of G. parvulum by Hans Till in 1994, Franz Berger changed the status of this taxon to subspecies (Berger, 2008). We found several location of G. parvulum ssp. amoenum between Las Palmas and La Mudana (Fig. 1). The soil is always rocky, filled up with weathered material and gravel. The plants are quite often numerous, except the population in the very north of Schütziana 1(2010)1 p. 32
the distribution area at La Mudana. There, ssp. amoenum shares the habitat with G. gaponii Neuhuber and G. horridispinum Frank ex H. Till (Fig. 16-19). Whereas G. horridispinum prefers the clefts, G. gaponii and G parvulum ssp. amoenum grow at La Mudana under bushes in the sediment of rocks. We found a lot of fruits, very often only one per head. Fig. 3-4: G. parvulum ssp. amoenum, Las Palmas Fig. 5-6: G. parvulum ssp. amoenum, Las Palmas Fig. 7-8: G. parvulum ssp. amoenum, Las Palmas Schütziana 1(2010)1 p. 33
Page 1 and 2: Schütziana The Gymnocalycium Onlin
Page 3 and 4: Editorial Dear Gymnocalycium enthus
Page 5 and 6: Florida, in southern Uruguay. In do
Page 7 and 8: to identify it, but it may be refer
Page 9 and 10: Figs 4-5: Gymnocalycium hyptiacanth
Page 11 and 12: First-hand information from Uruguay
Page 13 and 14: Here the description of a plant fro
Page 15 and 16: Fig. 13: G. hyptiacanthum MM 154. F
Page 17 and 18: not erect, as in the description, a
Page 19 and 20: Figs. 17-22: G. hyptiacanthum WD-1.
Page 21 and 22: Gymnocalycium papschii H. Till pro
Page 23 and 24: Comparing the plants from WP 83/111
Page 25 and 26: Fig. 5: G. spec. STO 521, body Fig.
Page 27 and 28: Fig. 9: G. papschii WP 83-111, body
Page 29 and 30: Fig. 13: G. papschii WP 83-111, bod
Page 31: Three subspecies of Gymnocalycium p
Page 35 and 36: Fig. 15: habitat, 2 km north of Las
Page 37 and 38: Fig. 27-28: habitat of G. parvulum
Page 39 and 40: Fig. 37-38: G. parvulum ssp. agnesi
Page 41: Fig. 49-50: habitat, 4 km north-eas

Volume 1, Issue 1, 2010 ISSN 2191-3099 - Schütziana

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