Weed Herbarium – by Scientific Name

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Sagina
Sagina procumbens birdseye pearlwort Caryophyllaceae - Pink Family
Saponaria
Saponaria officinalis bouncing bet Caryophyllaceae - Pink Family
Schizachyrium
Schizachyrium scoparium see - Andropogon scoparius
Scleranthus
Scleranthus annuus knawel Caryophyllaceae - Pink Family
Scrophularia
Scrophularia nodosa common figwort Scrophulariaceae - Figwort Family
Senecio
Senecio jacobaea tansy ragwort Asteraceae (Compositae) - Aster or Sunflower Family
Senecio vulgaris common groundsel Asteraceae (Compositae) - Aster or Sunflower Family
Setaria
Setaria lutescens see - Setaria glauca
Setaria faberi giant foxtail Poaceae (Graminae) - Grass Family
Setaria glauca yellow foxtail Poaceae (Graminae) - Grass Family
Sicyos
Sicyos angulatus burcucumber Cucurbitaceae - Gourd Family
Silene
Silene cucubalus see - Silene vulgaris
Silene alba white cockle Caryophyllaceae - Pink Family
Silene vulgaris bladder campion Caryophyllaceae - Pink Family
Silphium
Silphium perfoliatum cup plant Asteraceae (Compositae) - Aster or Sunflower Family
Sinapis
Sinapis arvensis see - Brassica kaber
Sisymbrium
Sisymbrium officinale hedge mustard Brassicaceae (Cruciferae) - Mustard Family
Smilax
Smilax herbacea carrion flower Smilacaceae - Catbrier Family
Solanum
Solanum carolinense horsenettle Solanaceae - Nightshade Family
Solanum dulcamara bittersweet nightshade Solanaceae - Nightshade Family
Solanum ptycanthum eastern black nightshade Solanaceae - Nightshade Family
Solidago
Solidago canadensis Canada goldenrod Asteraceae (Compositae) - Aster or Sunflower Family
Solidago graminifolia narrowleaf goldenrod Asteraceae (Compositae) - Aster or Sunflower Family
Solidago sempervirens seashore goldenrod Asteraceae (Compositae) - Aster or Sunflower Family
Sonchus
Sonchus arvensis perennial sowthistle Asteraceae (Compositae) - Aster or Sunflower Family
Sonchus asper spiny sowthistle Asteraceae (Compositae) - Aster or Sunflower Family
Sonchus oleraceus annual sowthistle Asteraceae (Compositae) - Aster or Sunflower Family
Sorghastrum
Sorghastrum nutans yellow Indiangrass Poaceae (Graminae) - Grass Family
Sorghum
Sorghum halepense Johnson grass Poaceae (Graminae) - Grass Family
Spergularia
Spergularia rubra red sandspurry Caryophyllaceae - Pink Family
Stellaria
Stellaria graminifolia see - Stellaria graminea
Stellaria graminea little starwort Caryophyllaceae - Pink Family
Stellaria media common chickweed Caryophyllaceae - Pink Family
Symplocarpus
Symplocarpus foetidus common skunk cabbage Araceae - Arum Family