S33w Cytisus multiflorus fields

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Description

Submediterranean western Iberian analogue of S33n and S33z, successionally linked mostly to the Quercus pyrenaica forests of the unit T19A in inland areas of Portugal, Galicia and western León and Asturias. Genista hystrix can dominate in rocky, particularly eroded places in the context of holm-oak woodlands of the unit T21z, the scrub then becoming somewhat cushion-forming and reminiscent of the unit S73z. Given its clear ecological and biogeographical meaning, it seems improper to admit this scrub only at level V and lump it with many other rather different retamoid shrublands as EUNIS does, the creation of a new regional level IV unit thus becoming convenient.

Floristic Composition

Frequent species

Cytisus multiflorus 0.61, Agrostis castellana 0.57, Genista hystrix 0.54, Lavandula pedunculata 0.5, Helictochloa marginata 0.27, Jasione montana 0.27, Cytisus scoparius 0.27, Halimium alyssoides 0.25, Dactylis glomerata 0.25, Cytisus striatus 0.24, Lotus corniculatus 0.23, Quercus pyrenaica 0.23, Sanguisorba verrucosa 0.21, Halimium umbellatum 0.2, Koeleria crassipes 0.19, Erica cinerea 0.19, Helichrysum stoechas 0.19, Genista florida 0.18, Quercus rotundifolia 0.18, Hypochaeris radicata 0.17, Cistus ladanifer 0.17, Andryala integrifolia 0.17, Neoschischkinia truncatula 0.17, Pteridium aquilinum 0.17, Erica arborea 0.15, Thrincia saxatilis aggr. 0.15, Thymus mastichina 0.15, Plantago holosteum 0.15, Dianthus laricifolius 0.14, Hypericum linariifolium 0.14, Genista tridentata 0.13, Adenocarpus complicatus aggr. 0.13, Anarrhinum bellidifolium 0.13, Sedum forsterianum 0.13, Centaurea paniculata aggr. 0.13, Cistus inflatus 0.13, Santolina semidentata 0.12, Odontarrhena serpyllifolia 0.12, Erica umbellata 0.12, Rumex acetosella 0.11, Agrostis capillaris 0.11, Arenaria montana 0.1, Allium sphaerocephalon 0.1, Seseli montanum 0.1, Melica ciliata 0.1, Aira caryophyllea 0.1, Thymus zygis 0.1, Tuberaria guttata 0.1, Asperula aristata 0.1, Silene nutans 0.08, Crucianella angustifolia 0.08, Filago minima 0.08, Arrhenatherum elatius 0.08, Ulex europaeus aggr. 0.07, Micropyrum tenellum 0.07, Phleum pratense aggr. 0.07, Glandora prostrata 0.07, Erysimum linifolium 0.07, Galium parisiense 0.06, Filipendula vulgaris 0.06, Teucrium scorodonia 0.06, Daucus carota 0.06, Cistus salviifolius 0.06, Daphne gnidium 0.06, Arenaria querioides 0.06, Petrorhagia nanteuilii 0.06, Pilosella castellana 0.06, Quercus robur 0.06, Brachypodium distachyon 0.06

Regional distribution

Known occurrences and potential area of occupancy of the habitat type in the study region.
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Citation: IBEROATLANTICA – Flora and Habitats of the Cantabrian Mixed Forests ecoregion.
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