U381 Tyrrheno-Adriatic eumediterranean calcicolous chasmophyte communities
Description
Patchy communities inhabiting crevices and ledges of bare solid calcareous outcrops, rich in species, many endemic. Despite the existence of some geographical, topographical and altitudinal variation surely warranting the recognition of minor subunits, the unit is floristically unified by a number of widespread highly specialised plants successful across all this azonal complex. In the very analytical original EUNIS , these communities ar recognised at level VI as U38171 (“Oro-Cantabrian calcareous cliffs).
Floristic Composition
Frequent species
Asplenium trichomanes
0.39,
Erinus alpinus
0.31,
Asplenium ceterach
0.27,
Asplenium ruta-muraria
0.25,
Sedum dasyphyllum
0.25,
Saxifraga canaliculata
0.24,
Arenaria grandiflora
0.23,
Sedum album
0.19,
Campanula rotundifolia aggr.
0.19,
Crepis albida
0.17,
Chaenorhinum origanifolium
0.16,
Saxifraga paniculata
0.15,
Galium mollugo aggr.
0.15,
Globularia repens
0.14,
Festuca burnatii
0.13,
Hieracium mixtum aggr.
0.13,
Cystopteris fragilis aggr.
0.13,
Asplenium viride
0.12,
Pimpinella tragium
0.11,
Anemone pavoniana
0.11,
Hornungia alpina
0.1,
Centranthus lecoqii
0.1,
Campanula adsurgens
0.1,
Saxifraga trifurcata
0.1,
Sedum sediforme
0.09,
Globularia nudicaulis
0.09,
Campanula arvatica aggr.
0.08,
Rumex scutatus
0.08,
Valeriana apula
0.08,
Saxifraga cuneata
0.08,
Phagnalon saxatile
0.08,
Koeleria vallesiana
0.06,
Festuca hystrix
0.06,
Agrostis schleicheri
0.06,
Allosorus acrosticus
0.06,
Melica ciliata
0.06,
Matthiola perennis
0.06,
Leontodon farinosus
0.06,
Draba dedeana
0.06,
Carex sempervirens
0.06,
Campanula erinus
0.06,
Galium pumilum aggr.
0.06,
Asperula hirta
0.06,
Saxifraga babiana
0.05,
Dryopteris mindshelkensis
0.05,
Anthyllis vulneraria
0.05
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Indicator species
Asplenium trichomanes 0.33
,
Asplenium ceterach 0.26
,
Erinus alpinus 0.24
,
Saxifraga canaliculata 0.24
,
Sedum dasyphyllum 0.24
,
Asplenium ruta-muraria 0.23
,
Campanula rotundifolia aggr. 0.17
,
Arenaria grandiflora 0.16
,
Sedum album 0.16
,
Crepis albida 0.15
,
Saxifraga paniculata 0.15
,
Globularia repens 0.14
,
Chaenorhinum origanifolium 0.14
,
Festuca burnatii 0.13
,
Galium mollugo aggr. 0.13
,
Hieracium mixtum aggr. 0.13
,
Asplenium viride 0.12
,
Cystopteris fragilis aggr. 0.11
,
Anemone pavoniana 0.11
,
Pimpinella tragium 0.1
,
Saxifraga trifurcata 0.1
,
Campanula adsurgens 0.09
,
Valeriana apula 0.08
,
Saxifraga cuneata 0.08
,
Globularia nudicaulis 0.07
,
Campanula arvatica aggr. 0.07
,
Phagnalon saxatile 0.06
,
Sedum sediforme 0.06
,
Agrostis schleicheri 0.06
,
Festuca hystrix 0.06
,
Leontodon farinosus 0.06
,
Allosorus acrosticus 0.06
,
Matthiola perennis 0.06
,
Koeleria vallesiana 0.06
,
Carex sempervirens 0.06
,
Asperula hirta 0.05
,
Draba dedeana 0.05
,
Saxifraga babiana 0.05
,
Hornungia alpina 0.05
,
Dryopteris mindshelkensis 0.05
,
Potentilla nivalis 0.04
,
Teucrium pyrenaicum 0.04
,
Polypodium cambricum 0.04
,
Centranthus lecoqii 0.04
,
Campanula erinus 0.04
,
Silene saxifraga 0.04
,
Dethawia splendens 0.04
,
Galium pumilum aggr. 0.04
,
Hieracium amplexicaule aggr. 0.04
,
Urtica dioica 0.04
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Regional distribution
