Scirpus, as currently (narrowly) circumscribed, encloses ca. 20 species (ca. 35 according to Whittemore & Schuyler 2002 but these authors have applied a very narrow species concept, for instance in the Scirpus atrovirens-group). Previously all scirpoid-looking species have been accommodated in a broadly circumscribed genus Scirpus. One species of Scirpus s.str. is native in Belgium, S. sylvaticus L.

  • Inflorescence compact, brownish-red. Spikelets in fascicles of 8-20, at the apices of ultimate rays. Perianth bristles 0-3, slender, smooth below, retrorsely barbed above, shorter than the achene === Scirpus atrovirens subsp. georgianus

  • Inflorescence lax, green or greenish-brown. Spikelets in fascicles of 2-5(-8), at the apices of ultimate rays. Perianth bristles 5-6, stiff, retrorsely barbed throughout, as long as to slightly longer than the achene (native) === S. sylvaticus

DeFilipps R.A. (1980) Scirpus. In: Tutin T.G. & al. (eds.), Flora Europaea, vol. 5. Cambridge University Press, Cambridge: 277-280.

Lambinon J., Delvosalle L., Duvigneaud J. (avec coll. Geerinck D., Lebeau J., Schumacker R. & Vannerom H. (2004) Nouvelle Flore de la Belgique, du Grand-Duché de Luxembourg, du Nord de la France et des Régions voisines (Ptéridophytes et Spermatophytes). Cinquième édition. Jardin botanique national de Belgique, Meise: CXXX + 1167 p.

Pignotti L. (2003) Scirpus L. and related genera (Cyperaceae) in Italy. Webbia 58(2): 281-400.

Whittemore A.T. & Schuyler A.E. (2002) Scirpus. In: Flora of North America Editorial Committee (eds.), Flora of North America, vol. 23. Oxford University Press, New York-Oxford: 8-21.

Taxonomic name: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith