Areas of low dry brushwood, mostly constituted by ling (Erica umbellate), red heather (E. Australis), prickled broom (Pterospartum tridentatum) or dwarf gorse (Ulex minor). This subtype of habitat 4030 is usually associated to the abundance of acid rocks, to high precipitation and to the changes caused by flash fires. This habitat is rich in several fauna species, due to the existence of open areas used for feeding. Here one can see the wolf (Canis lupus), the deer (Capreolus capreolus), the wildcat (Felis silvestris) and the boar (Sus scrofa). In what concerns bird species one can see the golden eagle (Aquila crysaetus), the peregrine falcon (Falco peregrinus), the common kestrel (Falco tinnunculus), the Eurasian eagle-owl (Bubo bubo) and the crag martin (Ptyonoprogne rupestris). Regarding reptiles one would be able to see the jewelled lizard (Lacerta lepida), the large psammodromus lizard (Psammodromus algirus), the Lataste’s viper (Vipera latastei) and the Portuguese viper (Vipera seoanei).
The thyme areas are constituted by wild thyme (Thymus caespititius), by bentgrass (Agrostis truncatula subsp. commista), by one or more perennial species of the stonecrop genus (“arroz-dos-telhados”) (S. anglicum subsp. pyrenaicum, S. brevifolium, S. Pruinatum) and also by several bulbous plants (Narcissus bulbocodium, Scilla monophyllos, etc.). This subtype creates mosaics of vegetation, associated to parts of dry brushwood. They colonize granite or schist soils and are frequent in slopes and convex areas.