Vegetation Science Group

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

Vegetation of the Czech Republic

Class AB
Juncetea trifidi Hadač in Klika et Hadač 1944
Alpine grasslands on base-poor soil

ABA Juncion trifidi

ABB Nardo strictae-Caricion bigelowii

The class Juncetea trifidi includes natural alpine grasslands on siliceous bedrocks of the mountains of Europe and Siberia. It is mostly dominated by tussock-forming graminoids, e.g. Juncus trifidus and Nardus stricta in oceanic regions of Europe, Carex curvula in the Alps and the Southern Carpathians, Sesleria spp. in the Balkans and Festuca ovina in the Siberian mountains. These grasslands are often found to form mosaic with dwarf-shrub vegetation of the class Loiseleurio-Vaccinietea and snow-bed vegetation of the class Salicetea herbaceae. Vegetation of snow beds is very fragmentary in the Czech mountains: typical communities of the Salicetea herbaceae are lacking.

Orig. (Klika & Hadač 1944): Juncetea trifidi Hadač 1944

Syn.: Caricetea curvulae Br.-Bl. 1948

Diagnostic species: Agrostis rupestris, Avenella flexuosa, Bistorta major, Calluna vulgaris, Carex bigelowii, Diphasiastrum alpinum, Festuca supina, Hieracium alpinum agg., Huperzia selago, Nardus stricta, Pulsatilla alpina subsp. austriaca, Solidago virgaurea; Alectoria ochroleuca, Cetraria cucullata, C. islandica, Cladonia bellidiflora, Racomitrium lanuginosum, Thamnolia vermicularis

Constant species: Avenella flexuosa, Bistorta major, Calluna vulgaris, Carex bigelowii, Festuca supina, Hieracium alpinum agg., Nardus stricta, Solidago virgaurea

Source: Kočí M. (2007): AB Juncetea trifidi Hadač in Klika et Hadač 1944. In: Chytrý M. (ed.), Vegetace České republiky. 1. Travinná a keříčková vegetace [Vegetation of the Czech Republic. 1. Grassland and Heathland Vegetation]. Academia, Praha, pp. 76-77.