Scirpus retrofractus
Sentellaria hyssoppifolia, parviflora, and others
Sedum, a low plant, fl. white
Senecio sp.
Serratula præalta, scariosa and spicata
Sida rhombifolia and spinosa
Silene antirrhina, and another sp.
Sium sp.
Smilax sarsaparilla and other sp.
Smyrnium aureum