Sparsely vegetated weathered rock and outcrop habitats

Description (English)

Rocks and outcrops colonised by pioneer communities, especially of Crassulaceae. Vegetation of the alliance Sedo-Scleranthion biennis. Substrates are mostly siliceous, occurring in the upland and montane levels of the nemoral zone. The communities are dominated by succulent Sempervivum, Jovibarba and Sedum species accompanied by Silene rupestris, Erophila verna, Scleranthus polycarpos, Veronica fruticans, Thymus praecox ssp. polytrichus, Viola tricolor ssp. saxatilis, by small crucifers, lichens and mosses Polytrichum piliferum and Racomitrium canescens.

Source: EUNIS habitat classification

Quick facts

EUNIS habitat type code R122

Vegetation types

Relation to vegetation types (syntaxa)

Not available

Species mentioned in habitat description

Flowering Plants Erophila verna
Flowering Plants Scleranthus polycarpos
Flowering Plants Silene rupestris
Flowering Plants Thymus praecox
Flowering Plants Veronica fruticans
Flowering Plants Viola tricolor
Mosses & Liverworts Polytrichum piliferum
Mosses & Liverworts Racomitrium canescens
Species scientific name English common name Species group
Erophila verna Flowering Plants
Scleranthus polycarpos Flowering Plants
Silene rupestris Flowering Plants
Thymus praecox Flowering Plants
Veronica fruticans Flowering Plants
Viola tricolor Flowering Plants
Polytrichum piliferum Mosses & Liverworts
Racomitrium canescens Mosses & Liverworts

Other classifications

Classification Code Habitat type name Relationship type
EUNIS Habitat Classification 2007 (revised descriptions 2012) H3.62 Sparsely vegetated weathered rock and outcrop habitats same
For relation to plant communities (syntaxa), see Vegetation types

History

Classification Code Habitat type name Relationship type Comment
EUNIS Habitat Classification 200410 H3.62 Sparsely vegetated weathered rock and outcrop habitats same
EUNIS Habitat Classification 200308 H3.62 Sparsely vegetated weathered rock and outcrop habitats same
EUNIS Habitat Classification 200202 H3.62 Sparsely vegetated weathered rock and outcrop habitats same
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