S33w Cytisus multiflorus fields

New search

Description

Retamoid scrub on deep, stoney, draining soils (mostly colluvia) in inland areas of Portugal, Galicia and western León and Asturias.

Protection

This habitat is not protected under the EU Habitat Directive.

Floristic Composition

Frequent species

Cytisus multiflorus 61%, Agrostis castellana 57%, Genista hystrix 54%, Lavandula pedunculata 50%, Helictochloa marginata 27%, Jasione montana 27%, Cytisus scoparius 27%, Halimium alyssoides 25%, Dactylis glomerata 25%, Cytisus striatus 24%, Lotus corniculatus 23%, Quercus pyrenaica 23%, Sanguisorba verrucosa 21%, Halimium umbellatum 20%, Koeleria crassipes 19%, Erica cinerea 19%, Helichrysum stoechas 19%, Genista florida 18%, Quercus rotundifolia 18%, Hypochaeris radicata 17%, Cistus ladanifer 17%, Andryala integrifolia 17%, Neoschischkinia truncatula 17%, Pteridium aquilinum 17%, Erica arborea 15%, Thrincia saxatilis aggr. 15%, Thymus mastichina 15%, Plantago holosteum 15%, Dianthus laricifolius 14%, Hypericum linariifolium 14%, Genista tridentata 13%, Adenocarpus complicatus aggr. 13%, Anarrhinum bellidifolium 13%, Sedum forsterianum 13%, Centaurea paniculata aggr. 13%, Cistus inflatus 13%, Santolina semidentata 12%, Odontarrhena serpyllifolia 12%, Erica umbellata 12%, Rumex acetosella 11%, Agrostis capillaris 11%, Arenaria montana 10%, Allium sphaerocephalon 10%, Seseli montanum 10%, Melica ciliata 10%, Aira caryophyllea 10%, Thymus zygis 10%, Tuberaria guttata 10%, Asperula aristata 10%, Silene nutans 8%, Crucianella angustifolia 8%, Filago minima 8%, Arrhenatherum elatius 8%, Ulex europaeus aggr. 7%, Micropyrum tenellum 7%, Phleum pratense aggr. 7%, Glandora prostrata 7%, Erysimum linifolium 7%, Galium parisiense 6%, Filipendula vulgaris 6%, Teucrium scorodonia 6%, Daucus carota 6%, Cistus salviifolius 6%, Daphne gnidium 6%, Arenaria querioides 6%, Petrorhagia nanteuilii 6%, Pilosella castellana 6%, Quercus robur 6%, Brachypodium distachyon 6%

Phytosociology

  • Genisto hystricis-Cytisetum multiflori
  • Halimio alyssoidis-Cytisetum multiflori
  • Lavandulo sampaioanae-Cytisetum multiflori

Relations with other habitat types

This scrub is successionally linked mostly to the Quercus pyrenaica forests of the unit T19A , and thus interpretable as a submediterranean western Iberian analogue of S33n and S33z. 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 S732. 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 becoming convenient.

Regional distribution

Known occurrences and potential area of occupancy of the habitat type in the study region.

© 2025 IBEROATLANTICA
Citation: IBEROATLANTICA – Flora and Habitats of the Cantabrian Mixed Forests ecoregion.
iberoatlantica.eu