Vegetation Science Group

Department of Botany and Zoology | Faculty of Science | Masaryk University

Vegetation of the Czech Republic

Association MAA01
Polygono-Eleocharitetum ovatae Eggler 1933

Polygono-Eleocharitetum ovatae

Photo on botanickafotogalerie.cz

This association is dominated by low-growing annual graminoids (e.g. Carex bohemica, Coleanthus subtilis, Eleocharis ovata and Juncus bufonius) and dicots. It is most common on exposed fishpond bottoms, and less frequently it also occurs on sediment accumulations on river banks. This is the most moisture-demanding and most acidophilous association of the Eleocharition ovatae alliance. Usually it occurs on a 5–30 cm deep layer of wet, loamy to loamy-clayey mud. It is most frequent in mid-altitude areas of Bohemia and western Moravia.

Nomen mutatum propositum

Orig. (Eggler 1933): Polygono-Heleocharetum ovatae .Heleocharis ovata = Eleocharis ovata. Polygonum hydropiper = Persicaria hydropiper. Polygonum lapathifolium = Persicaria lapathifolia subsp. lapathifolia. Polygonum minus = Persicaria minor. Polygonum tomentosum = Persicaria lapathifolia subsp. pallida)

Syn.: Caricetum cyperoidis Eggler 1933 (§ 25), Eleocharito ovatae.Caricetum cyperoidis Klika 1935, Cypero fusci-Limoselletum aquaticae (Oberdorfer 1959) Korneck 1960 p. p., Lindernio-Eleocharitetum ovatae Pietsch 1973, Riccio cavernosae-Limoselletum aquaticae Philippi 1968 p. p., Coleantho.Spergularietum echinospermae Vicherek 1972 prov. p. p., Peplido portulae.Eleocharitetum ovatae Pietsch 1973

Diagnostic species: Alopecurus aequalis. Bidens radiata. Callitriche palustris s. l. (predominantly C. palustris s. str.), Carex bohemica, Coleanthus subtilis, Elatine hydropiper, E. triandra, Eleocharis ovata, Gnaphalium uliginosum. Juncus bufonius, Limosella aquatica, Peplis portula. Persicaria lapathifolia. Ranunculus sceleratus. Rorippa palustris. Rumex maritimus; Botrydium granulatum. Riccia cavernosa

Constant species: Alopecurus aequalis. Bidens radiata. Callitriche palustris s. l. (predominantly C. palustris s. str.), Carex bohemica. Coleanthus subtilis. Eleocharis ovata. Gnaphalium uliginosum. Juncus bufonius. Limosella aquatica. Persicaria lapathifolia. Ranunculus sceleratus. Rorippa palustris. Rumex maritimus

Dominant species: Callitriche palustris s. l. (predominantly C. palustris s. str.), Carex bohemica, Coleanthus subtilis, Eleocharis ovata, Juncus bufonius, Limosella aquatica

Formal definition: (Group Eleocharis ovata OR Coleanthus subtilis cover > 25 %) NOT Alisma gramineum cover > 5 % NOT Bidens radiata cover > 50 % NOT Bidens tripartita cover > 50 % NOT Bolboschoenus maritimus s. l. cover > 25 % NOT Eleocharis acicularis cover > 50 % NOT Juncus bulbosus cover > 25 % NOT Oenanthe aquatica cover > 25 % NOT Persicaria amphibia cover > 25 % NOT Persicaria lapathifolia cover > 50 % NOT Ranunculus sceleratus cover > 50 % NOT Rumex.maritimus cover > 50 % NOT Scirpus radicans cover > 25 % NOT Typha latifolia cover > 25 %

Source: Šumberová K. (2011): MAA01 Polygono-Eleocharitetum ovatae Eggler 1933. In: Chytrý M. (ed.), Vegetace České republiky. 3. Vodní a mokřadní vegetace [Vegetation of the Czech Republic 3. Aquatic and wetland vegetation]. Academia, Praha, pp. 315-319.