Vegetation Science Group

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

Vegetation of the Czech Republic

Association LBA01
Alnetum incanae Lüdi 1921

Alnetum incanae

Photo on botanickafotogalerie.cz

This association includes montane floodplain forests dominated by Alnus incana, in places with an admixture of Acer pseudoplatanus and Picea abies. The herb layer is species-rich and includes several species of tall forbs. Soils contain a large proportion of sand, gravel and stones. Floods are more frequent than in other types of floodplain forests but they are of shorter duration. In the Czech Republic this association occurs in higher mountain areas across the country.

Orig. (Lüdi 1921): Alnetum incanae

Syn:. Aceri-Alnetum incanae Beger 1922, Equiseto-Alnetum incanae Moor 1958

Diagnostic species: Alnus incana, Prunus padus subsp. padus, Rubus idaeus, Salix caprea; Aconitum plicatum, Arabidopsis halleri, Athyrium filix-femina, Chaerophyllum hirsutum, Chrysosplenium alternifolium, Crepis paludosa, Doronicum austriacum, Geum rivale, Impatiens noli-tangere, Knautia maxima, Petasites albus, Phyteuma spicatum, Rumex arifolius, Senecio nemorensis agg., Silene dioica, Stellaria nemorum, Thalictrum aquilegiifolium, Valeriana excelsa subsp. sambucifolia; Plagiomnium undulatum

Constant species: Acer pseudoplatanus, Alnus incana, Picea abies, Rubus idaeus, Sorbus aucuparia; Aegopodium podagraria, Ajuga reptans, Anemone nemorosa, Athyrium filix-femina, Caltha palustris, Chaerophyllum hirsutum, Chrysosplenium alternifolium, Crepis paludosa, Deschampsia cespitosa, Filipendula ulmaria, Impatiens noli-tangere, Myosotis palustris agg. (predominantly M. nemorosa), Oxalis acetosella, Petasites albus, Ranunculus repens, Senecio nemorensis agg., Silene dioica, Stachys sylvatica, Stellaria nemorum, Thalictrum aquilegiifolium, Urtica dioica; Atrichum undulatum, Brachythecium rutabulum, Plagiomnium affine s. l., P. undulatum

Dominant species: Alnus incana; Carex brizoides, Chaerophyllum hirsutum, Impatiens noli-tangere, Matteuccia struthiopteris, Petasites albus, Stellaria nemorum; Plagiomnium affine s. l.

Formal definition: Alnus incana cover > 15 % AND (Group Geranium sylvaticum OR Group Petasites albus) NOT Alnus glutinosa cover > 15 % NOT Cardamine amara (excl. subsp. opicii) cover > 5 % NOT Carex remota cover > 5 %

Source: Douda J. (2013): LBA01 Alnetum incanae Lüdi 1921. 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. 200-202.