Vegetation Science Group

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

Vegetation of the Czech Republic

Association LBF02
Mercuriali perennis-Fraxinetum excelsioris (Klika 1942) Husová in Moravec et al. 1982

Mercuriali perennis-Fraxinetum excelsioris

Photo on botanickafotogalerie.cz

Mercuriali-Fraxinetum is a ravine or scree forest dominated mostly by Acer pseudoplatanus, Fraxinus excelsior and Ulmus glabra. The shrub and herb layers are usually well developed and contain nutrient- and moisture-demanding species. In contrast, thermophilous species typical of ravine forests at lower altitudes are absent. This association occurs at mid-altitudes throughout the Czech Republic.

Orig. (Husová in Moravec et al. 1982): Mercuriali-Fraxinetum (Klika 1942) Husová nom. novum (Mercurialis perennis, Fraxinus excelsior)

Syn.: Aceri-Fraxinetum Tüxen 1937 (§ 31, younger homonym, non: Aceri pseudoplatani-Fraxinetum Rübel 1930), Aceri-Fagetum carpaticum Klika 1942 (§ 36)

Diagnostic species: Acer platanoides, A. pseudoplatanus, Fraxinus excelsior, Ulmus glabra; Dryopteris filix-mas, Galeobdolon luteum agg., Geranium robertianum, Mercurialis perennis

Constant species: Acer platanoides, A. pseudoplatanus, Fagus sylvatica, Fraxinus excelsior, Ulmus glabra; Dryopteris filix-mas, Galeobdolon luteum agg., Galium odoratum, Geranium robertianum, Impatiens noli-tangere, Mercurialis perennis, Oxalis acetosella, Poa nemoralis, Senecio nemorensis agg., Urtica dioica

Dominant species: Acer pseudoplatanus, Fraxinus excelsior, Tilia cordata, T. platyphyllos, Ulmus glabra; Dryopteris filix-mas, Galeobdolon luteum agg., Galium odoratum, Impatiens noli-tangere, Mercurialis perennis, Oxalis acetosella

Formal definition: Group Mercurialis perennis AND Group Ulmus glabra NOT Group Alliaria petiolata NOT Group Cardamine amara NOT Group Carex remota NOT Group Corydalis cava NOT Group Lathyrus vernus NOT Group Petasites albus NOT Abies alba cover > 50 % NOT Alnus glutinosa cover > 5 % NOT Aruncus dioicus cover > 5 % NOT Carpinus betulus cover > 5 % NOT Fagus sylvatica cover > 25 % NOT Larix decidua cover > 50 % NOT Lunaria rediviva cover > 5 % NOT Picea abies cover > 50 % NOT Pinus sylvestris cover > 25 % NOT Quercus petraea agg. cover > 5 % NOT Quercus robur cover > 5 %

Source: Boublík K. (2013): LBF02 Mercuriali perennis-Fraxinetum excelsioris (Klika 1942) Husová in Moravec et al. 1982. In: Chytrý M. (ed.), Vegetace České republiky. 4. Lesní a křovinná vegetace [Vegetation of the Czech Republic 4. Forest and shrub vegetation]. Academia, Praha, pp. 286-289.