Publication: Cactaceae Consensus Init. 6: 12. 1998
Description
Notocactus scopa var. marchesi W. R. Abraham or Parodia scopa ssp. marchesi (W. R. Abraham) is a local or morphological form of the widespread and variable Parodia scopa. It has a smaller number of ribs (19-28), always within the the natural variation of the species (25-40), and 2-4 whitish central spines, sometimes yellowish. Even this feature does not appear to be exclusive of populations to Trenta y Tres, since other groups of Parodia scopa living in Rio Grande do Sul (Brazil) are described with white central spines, such as Notocactus scopa var. ramosus (Osten) Backeberg, (white to dark brown), yellow as Notocactus scopa var. daenikerianus Krainz (from yellow to honey-colored), or like Notocactus scopa var. glauserianus Krainz, from orange to brownish yellow. For these reasons, the distinguishing characteristics of Parodia scopa ssp. marchesi, appear to fall within the natural variation of Parodia scopa and the taxa that have been considered till now at infraspecific level are synonyms of Parodia scopa.
Derivation of specific name: This member of the Cactaceae family was given this name in honour of Prof. Eduardo Marchesi, Montevideo, Uruguay, who discovered the taxon.
Origin and Habitat
Quebradas of Treinta y Tres Department, in Uruguay.
Bibliography
Major references and further lectures
-
Urs Eggli, Leonard E. Newton “Etymological Dictionary of Succulent Plant Names” Springer Science & Business Media, 29 June 2013
-
David R Hunt; Nigel P Taylor; Graham Charles; International Cactaceae Systematics Group. “The New Cactus Lexicon” dh books, 2006
-
Gerloff, N., Neduchal, J. & Stuchlik, S.“Notokakteen. Gesamtdarstellung aller Notokakteen.” Ludwigsburg: Kveten Verlag. 1995
-
Backeberg, C. 1966. “Kakteenlexicon”. trs. Glass, L. 1977. “Cactus Lexicon”. Poole: Blandford Press.