Vegetation Science Group

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

Vegetation of the Czech Republic

Alliance XDB
Petasition hybridi Sillinger 1933

This alliance includes vegetation dominated by Petasites species in the narrow floodplains of small to medium-sized streams, mainly in submontane and montane areas. Soils are rich in nutrients and contain a significant sand and gravel component. Many stands represent natural treeless vegetation type maintained by flooding. However, Petasites stands also develop in secondary habitats such as on the banks of regulated rivers, in abandoned wet meadows or on roadsides.

Nomen mutatum propositum

Orig. (Sillinger 1933): Petasition officinalis (Petasites officinalis = P. hybridus)

Syn.: Calystegion sepium Tüxen 1947, Chaerophyllo-Petasition hybridi (Sillinger 1933) Kopecký 1968, Petasito-Chaerophyllion (Sillinger 1933) Niemann et al. 1973

Diagnostic species: Aconitum variegatum. Aegopodium podagraria. Chaerophyllum aromaticum. C. hirsutum. Cirsium oleraceum. Elymus caninus, Petasites hybridus, P. kablikianus. Primula elatior. Silene dioica. Stellaria nemorum

Constant species: Aegopodium podagraria. Chaerophyllum aromaticum. C. hirsutum. Cirsium oleraceum. Dactylis glomerata. Filipendula ulmaria. Heracleum sphondylium, Petasites hybridus, Poa trivialis. Ranunculus repens. Stellaria nemorum. Urtica dioica

Source: Kočí M. (2009): XDB Petasition hybridi Sillinger 1933. In: Chytrý M. (ed.), Vegetace České republiky. 2. Ruderální, plevelová, skalní a su»ová vegetace [Vegetation of the Czech Republic 2. Ruderal, weed, rock and scree vegetation]. Academia, Praha, pp. 313-314.