| Sabulina |
Sabulina villarii
| Salsola |
Salsola genistoides
Salsola oppositifolia
Salsola papillosa
Salsola webbii
Salsola x masclansii
| Salvia |
Salvia argentea
Salvia candelabrum
Salvia lavandulifolia subsp. vellerea
Salvia microphylla
Salvia phlomoides subsp. phlomoides
Salvia sclarea
Salvia verbenaca
| Salix |
Salix hastata subsp. hastata
| Sambucus |
Sambucus ebulus
Sambucus nigra
| Sanguisorba |
Sanguisorba lateriflora
Sanguisorba rupicola
Sanguisorba verrucosa
| Santolina |
Santolina canescens
Santolina chamaecyparissus subsp. tomentosa
Santolina elegans
Santolina ericoides
Santolina pectinata
Santolina rosmarinifolia
Santolina viscosa
| Saponaria |
Saponaria officinalis
| Sarcocapnos |
Sarcocapnos baetica
Sarcocapnos speciosa
| Satureja |
Satureja obovata subsp. hispalensis
| Saxifraga |
Saxifraga erioblasta
Saxifraga latepetiolata
Saxifraga oppositifolia subsp. oppositifolia
Saxifraga reuteriana
Saxifraga rigoi subsp. rigoi
| Scandosorbus |
Scandosorbus intermedia
| Schoenus |
Schoenus nigricans
| Scilla |
Scilla monophyllos
Scilla verna subsp. ramburii
| Scorpiurus |
Scorpiurus muricatus
| Scorzoneroides |
Scorzoneroides microcephala
| Scrophularia |
Scrophularia arguta
Scrophularia canina subsp. canina
Scrophularia frutescens
Scrophularia sambucifolia subsp. sambucifolia
Scrophularia scorodonia
Scrophularia tanacetifolia
Scrophularia viciosoii
| Scutellaria |
Scutellaria alpina subsp. alpina
Scutellaria orientalis subsp. hispanica
| Sedum |
Sedum villosum
| Sempervivum |
Sempervivum minutum
| Senecio |
Senecio alboranicus
Senecio erucifolius
Senecio lividus
Senecio quinqueradiatus
| Sesamum |
Sesamum indicum
| Seseli |
Seseli intricatum
Seseli tortuosum
| Setaria |
Setaria viridis
| Sideritis |
Sideritis arborescens
Sideritis glacialis subsp. vestita
Sideritis glacialis subsp. virens
Sideritis hirsuta subsp. hirsuta
Sideritis incana
Sideritis lasiantha
Sideritis leucantha
Sideritis stachydioides
| Silene |
Silene andryalifolia
Silene baccifera
Silene boryi
Silene colorata
Silene coelirosa
Silene conica subsp. conica
Silene decipiens
Silene fuscata
Silene gaditana
Silene gallica
Silene germana
Silene inaperta subsp. inaperta
Silene inaperta subsp. serpentinicola
Silene latifolia
Silene legionensis
Silene mariana
Silene mellifera
Silenem micropetala
Silene muscipula
Silene niceensis
Silene nocturna
Silene nutans subsp. nutans
Silene obtusifolia
Silene psammitis subsp. psammitis
Silene pseudoatocion
Silene ramosissima
Silene saxifraga
Silene sclerocarpa
Silene secundiflora
Silene tridentata
Silene tomentosa
Silene vulgaris subsp. vulgaris
| Sisymbrium |
Sisymbrium orientale
| Smilax |
Smilax aspera
| Smyrnium |
Smyrnium perfoliatum
| Solanum |
Solanum elaeagnifolium
Solanum lycopersicum "Huevo de toro"
Solanum nigrum
| Solidago |
Solidago virgaurea
| Sorbus |
Sorbus aucuparia
Sorbus domestica
Sorbus hybrida
Sorbus torminalis
| Spergularia |
Spergularia bocconei
| Stachys |
Stachys circinata
Stachys ocymastrum
| Staehelina |
Staehelina dubia
| Staphisagria |
Staphisagria macrosperma
| Sulla |
Sulla coronaria
Sulla flexuosa
| Symphythum |
Symphytum officinales
| Symphoricarpos |
Symphoricarpos albus
