Vegetation Science Group

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

Vegetation of the Czech Republic

Association ABA01
Cetrario-Festucetum supinae Jeník 1961

Cetrario-Festucetum supinae

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These alpine grasslands, supported by siliceous bedrocks, are dominated by the tussock-forming grasses Festuca supina and Avenella flexuosa. They have a rich lichen component. The association occurs on wind-exposed ridges and slopes from the timberline at approximately 1250 m to the highest summits of the Czech mountains. The soils are regularly disturbed by freeze-thaw cycles and aeolian erosion. Most stands are found in the Krkonoše Mountains, but several of them also occur in the Hrubý Jeseník and Králický Sněžník Mountains.

Orig. (Jeník 1961): Cetrario-Festucetum supinae as. nova (Cetraria cucullata, C. islandica, C. nivalis)

Syn.: Carici rigidae-Festucetum airoidis (Jeník 1961) W. Matuszkiewicz 1965 (fantom), Festuco supinae-Polytrichetum piliferi Jeník et al. 1980

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

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

Dominant species: Avenella flexuosa, Carex bigelowii, Festuca supina

Formal definition: (Group Festuca supina OR Group Thamnolia vermicularis) NOT Calluna vulgaris cover > 25 % NOT Empetrum nigrum s. l. cover > 25 % NOT Molinia caerulea s. l. cover > 25 % NOT Nardus stricta cover > 25 % NOT Vaccinium myrtillus cover > 25 %

Source: Kočí M. (2007): ABA01 Cetrario-Festucetum supinae Jeník 1961. 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. 77-80.