| 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
| Sanguisorba |
Sanguisorba lateriflora
Sanguisorba rupicola
Sanguisorba verrucosa
| Santolina |
Santolina chamaecyparissus subsp. tomentosa
Santolina ericoides
Santolina rosmarinifolia
Santolina viscosa
| Saponaria |
Saponaria officinalis
| Sarcocapnos |
Sarcocapnos baetica
| Saxifraga |
Saxifraga latepetiolata
Saxifraga oppositifolia subsp. oppositifolia
Saxifraga rigoi subsp. rigoi
| Scandosorbus |
Scandosorbus intermedia
| Schoenus |
Schoenus nigricans
| Scilla |
Scilla monophyllos
| Scorpiurus |
Scorpiurus muricatus
| Scrophularia |
Scrophularia arguta
Scrophularia canina subsp. canina
Scrophularia frutescens
Scrophularia scorodonia
Scrophularia tanacetifolia
Scrophularia viciosoii
| Scutellaria |
Scutellaria alpina subsp. alpina
Scutellaria orientalis subsp. hispanica
| Sempervivum |
Sempervivum minutum
| Senecio |
Senecio alboranicus
Senecio erucifolius
Senecio lividus
Senecio quinqueradiatus
| Sesamum |
Sesamum indicum
| Seseli |
Seseli tortuosum
| Setaria |
Setaria viridis
| Sideritis |
Sideritis arborescens
Sideritis glacialis subsp. vestita
Sideritis hirsuta subsp. hirsuta
Sideritis incana
Sideritis lasiantha
| Silene |
Silene andryalifolia
Silene boryi
Silene colorata
Silene conica subsp. conica
Silene decipiens
Silene fuscata
Silene gaditana
Silene germana
Silene inaperta subsp. inaperta
Silene inaperta subsp. serpentinicola
Silene latifolia
Silene legionensis
Silene mariana
Silene mellifera
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
| 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
| Staehelina |
Staehelina dubia
| Staphisagria |
Staphisagria macrosperma
| Sulla |
Sulla flexuosa
| Symphoricarpos |
Symphoricarpos albus
