Cortaderia Stapf
Cortaderia is a genus of ca. 25 species, all native in South America (the species center of diversity) and New Zealand. As currently circumscribed, Cortaderia is not monophyletic and New Zealand representatives probably merit generic recognition (see also Barker & al. 2003).
Apart from Cortaderia selloana, the famous Pampas grass, at least two other similar species of this genus are in cultivation in Europe: the South American C. jubata (Lem.) Stapf (syn.: Gynerium jubatum Lem.) and the New Zealand endemic C. richardii (Endl.) Zotov (syn.: Arundo richardii Endl.) (see Walters & al. 1984). It is not clear whether or not these taxa are also grown in Belgium. The latter has been reported as increasingly self-seeding in the British Isles, especially in Scotland (Clement 2005b). C. jubata may be a mere variant of C. selloana (Testoni & Villamil 2014).
Literature:
Allred K.W. (2003) Cortaderia. In: Barkworth M.E. & al. (eds.), Flora of North America north of Mexico, vol. 25: 298-300. Oxford University Press, New York-Oxford.
Armitage J.D. (2010) Cortaderia on Trial. The Plantsman N.S. 9(2): 78-83.
Armitage J.D. (2013) The application of the name Cortaderia 'Candy Floss' and additional notes on pink-flowered Cortaderia. Hanburyana 7: 41-46.
Astegiano M.E, Anton A.M. & Connor H.E. (1995) Sinopsis del género Cortaderia (Poaceae) en Argentina. Darwiniana 33(1-4): 43-51.
Barker N.P., Linder H.P., Morton C.M. & Lyle M. (2003) The paraphyly of Cortaderia (Danthonioideae; Poaceae): Evidence from morphology, chloroplast and nuclear DNA sequence data. Ann. Missouri Bot. Gard. 90: 1-24.
Clement E.J. (2005a) Cortaderia selloana does self-sow abundantly in Britain. BSBI News 99: 47-48.
Clement E.J. (2005b) Cortaderia richardii (Endl.) Zotov and allies. BSBI News 99: 48-50.
Conert H.J. (1961) Die Systematik und Anatomie der Arundineae. Weinheim.
Connor H.E. & Edgar E. (1974) Names and types in Cortaderia Stapf (Gramineae). Taxon 23(4): 595-605.
Lambrinos J.G. (2001) The expansion history of a sexual and asexual species of Cortaderia in California. WA. J. Ecol. 89(1): 88-98.
Linder H.P. (2005) Danthonieae. In: Mallett K. (ed.), Flora of Australia, vol. 44B, Poaceae 3: 19-70. Australian Biological Resources Study, Canberra.
Robinson E.R. (1984) Naturalized species of Cortaderia (Poaceae) in southern Africa. S. Afr. J. Bot. 3(5): 343-346.
Stace C. (2010) New flora of the British Isles, 3th ed.: XXXII + 1232 p. Cambridge University Press.
Testoni D. & Villamil C.B. (2014) Studies in the genus Cortaderia (Poaceae). I. Systematics and nomenclature in sect. Cortaderia. Darwiniana, nueva serie 2(2): 260-276. [available online at: http://www.ojs.darwin.edu.ar/index.php/darwiniana/article/view/591/623]
Walters S.M., Brady A., Brickell C.D., Cullen J., Green P.S., Lewis J., Matthews V.A., Webb D.A., Yeo P.F. & Alexander J.C.M. (eds.) (1984) The European Garden Flora, vol. 2 (part II). Cambridge University Press: 318 p.