Paul L. Redfearn, Jr.  

Species in this list include not only native and adventive plants, but also some commonly encountered ornamental plants.  Plants are listed alphabetically by genus. 


Sabatia angularis (L.) Pursh, rose pink, rose gentian [Gentianacae, gentian family]

Saggittaria brevirostra Machenzie & Bush, Photo 1, Photo 2, arrowhead [Alismataceae, water plantain family]

Sagittaria graminea Michx. var. graminea, arrowhead [Alismataceae, water plantain family]

Sagittaria latifolia Willd., Photo 1,  duck potato, common arrowhead, wapato [Alismataceae, water plantain family]

Salix babylonica L., Photo 1, Photo 2, Photo 3, weeping willow [Salicaceae, willow family]

Salix caroliniana Michx., Photo 1, Photo 2, Ward's willow, [Salicaceae, willow family]

Salix humilis Marsh, prairie willow [Salicaceae, willow family]

Salix nigra Marsh., black willow [Salicaceae, willow family]

Salvia azurea Lam. var. grandiflora Benth., Photo 1, Photo 2, Photo 3, Photo 4, Photo 5, blue sage [Lamiaceae, mint family]  

Salvia lyrata L., lyre-leaved sage, cancerweed [Lamiaceae, mint family]

Salvia reflexa Hornem., lance-leaved sage, Rocky Mountain sage [Lamiaceae, mint family]  

Sambucus canadensis L. Photo 1, Photo 2, Photo 3, common elderberry [Caprifoliaceae, honeysuckle family]

Sanguinaria canadensis L., Photo 1, Photo 2, Photo 3, bloodroot, red puccoon [Papaveraceae, poppy family]  

Sanicula odorata (Raf.) Pryer & Phillippe,  black snakeroot, sanicle [Apiaceae, carrot family]

Saponaria officinalis L., bouncing bet, soapwort [Caryophyllaceae, pink family]

Sassafras albidum (Nutt.) Nees, tree, leaves, flowers,  sassafras, white sassafras [Lauraceae, avocado family]

Sarurus cernus L., Photo 1, Photo 2, lizard's tail [Sauraceae, lizard's tail family]

Saxifraga texana Buckley, saxifrage [Saxifragaceae, saxifrage family]

Saxifraga virginiensis Michaux, early saxifrage [Saxifragaceae, saxifrage family]

Schizachyrium scoparium var. scoparium (Michaux) Nash, Photo 1, Photo 2, little bluestem [Poaceae, grass family]  

Schoenoplectus acutus (Muhl ex Bigelow) Á. Löve & D. Löve, great bulrush, hardstem bulrush [Cyperaceae, sedge family]

Schoenoplectus americanus Pers., salt marsh bulrush, Olney three-square  [Cyperaceae, sedge family]

Schoenoplectus pungens (Vahl.) Palla, chairmaker's rush, common threee-square [Cyperaceae, sedge family]

Schoenoplectus subterminalis (Torr,) Soják, swaying bulrush [Cyperaceae, sedge family]

Schoenoplectus tabernaemontani (C. C. Gmel.) Palla, Photo 1, Photo 2, Photo 3, Photo 4, great bulrush, soft stem bulrush [Cyperaceae, sedge family]

Schrankia nuttallii (DC. ex Britton & Rose) Standley, Photo 1, Photo 2, Photo 3, sensitive briar, catclaw sensitive briar [Minosaceae, mimosa family]  

Scirpus atrovirens Willd. var. atrovirens, common bulrush [Cyperaceae, sedge family]

Scirpus cyperinus (L.) Kunth., wool grass [Cyperaceae, sedge family]

Scirpus georgianus Harper, common bulrush [Cyperaceae, sedge family]

Scirpus pendulus Muhl. ex Elliot, bulrush [Cyperaceae, sedge family]

Scirpus polyphyllus Vahl, bulrush [Cyperaceae, sedge family]

Scleria ciliata Michx., hairy nutgrass [Cyperaceae, sedge family]

Scleria pauciflora Muhl., Carolina nut grass [Cyperaceae, sedge family]

Scleria triglomerata Michx., tall nut grass, whipgrass [Cyperaceae, sedge family]

Scleria verticillata Muhl., low nut grass, whorled nut grass [Cyperaceae, sedge family]

Sclerochloa dura (L.) P. Beauv., Photo 1, Photo 2, hard grass [Poaceae, grass family]

Scrophularia marilandica L., figwort, carpenter's square, late figwort [Scrophulariaceae, figwort family]

Scutellaria australis (Fassett) Epling, small skullcap, southern small shullcap [Lamiaceae, mint family]

Scutellaria bushii Britton, skullcap, Bush's skullcap [Lamiaceae, mint family]  

Scutellaria incana Biehler, Photo 1, Photo 2, downy skullcap, hoary skullcap [Lamiaceae, mint family]

Scutellaria ovata  Hill, Photo 1, Photo 2, heart-leaved skullcap, egg-leaved skullcap [Lamiaceae, mint family]

Securigera varia (L.) Lassen, crown vetch [Fabaceae, bean family]

Sedum pulchellum Michaux, Photo 1, Photo 2, Photo 3, widow's cross [Crassulaceae, stonecrop family]

Sedum sarmentosum Bunge, Photo 1, Photo 2, Photo 3, yellow stonecrop [Crassulaceae, stonecrop family]

Sedum ternatum Michaux, Photo 1, Photo 2, three-leaved stonecrop [Crassulaceae, stonecrop family]

Selenia aurea Nutt., Photo 1, Photo 2Photo 3 [Brassicaceae, mustard family]

Senecio glabellus Poiret, Photo 1, butterweed [Asteraceae, daisy family]

Setaria glauca (L.) Beauv. Photo 1, Photo 2, yellow foxtail [Poaceae, grass family]

Sherardia arvensis L., field madder [Rubiaceae, madder family]

Sibara virginica (L.) Rollins, Photo 1, Photo 2, sibaria [Brassicaceae, mustard family]

Sicyos angulatus L., Photo 1, Photo 2, Photo 3, Photo 4,  bur cucumber [Cucurbitaceae, gourd family]  

Sida spinosa L., Photo 1, prickly sida [Malvaceae, mallow family]

Silene regia Sims L., Photo 1, Photo 2,  royal catchfly [Caryophyllaceae, pink family]

Silene stellata (L.) Aiton f., starry champion [Carophyllaceae, pink family]

Silene virginica L., Photo 1, Photo 2, fire pink [Caryophyllaceae, pink family]

Silphium asteriscus L. var. scabrum Nutt., Photo 1, Photo 2, starry rosinweed [Asteraceae, daisy family]  

Silphium integrifolium Michx. var. integrifolium,  Photo 1, Photo 2, Photo 3, Photo 4, Photo 5 [Asteraceae, daisy family]

Silphium perfoliatum L., Photo 1, Photo 2, , cup plant, rosinweed [Asteraceae, daisy family]  

Silphium laciniatum L.. Photo 1, Photo 2, Photo 3, Photo 4, prairie dock (Asteraceae, daisy family]

Silphium terebinthinaceum Jacq, Photo 1, Photo 2, Photo 3, compass plant, prairie dock (Asteraceae, daisy family]

Silphium terebinthinaceum  x laciniatum, hybrid compass plant [Asteraceae, daisy family]

Sisyrinchium campestre E. Bickn., Photo 1, Photo 2,  prairie blue-eyed grass, white-eyed grass [Iridaceae, iris family]

Smallanthus uvedalis (L.) Mack., bearsfoot, yellow flowered leaf cup [Asteraceae, daisy family]

Smilax lasioneuron Hook., Photo 1, Photo 2, Photo 3, carrion flower [Smilacaceae, greenbrier family]

Smilax pulverulenta Michaux, carrion flower [Smilacaceae, greenbrier family]

Smilax rotundifolia L., greenbrier, catbrier [Smilacaceae, greenbrier family]

Solanum carolinense L. var. carolinense ,Photo 1, Photo 2Photo 3,  horse nettle, bull neddle [Solanaceae, nightshade family]

Solanum dulcamara L., climbing nightshade, bittersweet [Solanaceae, nightshade family]

Solanum ptycanthum Dunal ex DC., black nightshade [Solanaceae, nightshade family]

Solanum rostratum Dunal, Photo 1Photo 2,  buffalo bur, Kansas thistle [Solanaceae, nightshade family]  

Solidago altissima L. var. altissima, Photo 1, Photo 2, Photo 3, Photo 4, tall goldenrod [Asteraceae, daisy family]

Solidago canadensis L. var. hargeri Fernald, Photo 1, Photo 2, common goldenrod [Asteraceae, daisy family]

Solidago flexicaulis L., broadleaf goldenrod [Asteraceae, daisy family]

Solidago gattingeri Chapman, goldenrod [Asteraceae, daisy family]

Solidago gigantea Aiton, Photo 1, Photo 2, late goldenrod, tall goldenrod, Photo 1, Photo 2 [Asteraceae, daisy family]

Solidago missouriensis Nutt. var. fasciculata Holzinger, Photo 1, Photo2, Photo 3, Photo 4, goldenrod [Asteraceae, daisy family]

Solidago nemoralis Drylander, Photo 1, Photo 2, Photo 3, old-field goldenrod, gray goldenrod [Asteraceae, daisy family]

Solidago petiolaris Aiton var. angusta (Torrey & A. Gray) A. Gray, Photo 1, Photo 2,  goldenrod [Asteraceae, daisy family]

Solidago ptarnicioides (Nees) J. Boivin, Photo 1, Photo 2, photo 3, white upland aster, sneezewort aster [Asteraceae, daisy family]

Solidago radula Nutt., rough goldenrod [Asteraceae, daisy family]

Solidago rigida L., Photo 1, Photo 2, stiff goldenrod, rigid goldenrod [Asteraceae, daisy family]

Solidago speciosa Nutt., Photo 1, Photo 2, Photo 3, prairie goldenrod, showy goldenrod [Asteraceae, daisy family]

Solidago ulmnifolia Muhlenb.var. ulmifolia , Photo 1, Photo 2, Photo 3, Photo 4, Photo 5, elm-leaved goldenrod [Asteraceae, daisy family]  

Sonchus asper (L.) Hill ssp. asper, Photo 1, Photo 2, Photo 3, sow thistle, spiny-leaved sow thistle [Asteraceae, daisy family]

Sonchus oleraceus L., Photo 1, Photo 2, Photo 3, common sow thistle [Asteraceae, daisy family]

Sophora japonica,  Tree, Flowers 1, Flowers 2, Fruit 1, Fruit 2, Pagoda tree [Fabaceae, bean family]

Sorghastrum nutans (L.) Nash, Photo 1, Photo 2, Indian grass [Poaceae, grass family]  

Sorghum halepense (L.) Pers, Photo 1, Photo 2, Johnson grass (Poaceae, grass family]

Sparganium americanum Nutt., bur-reed [Sparganiaceae, bur-weed family]

Spartina pectinata Link, prairie cord grass, slough grass [Poaceae, grass family]

Spigelia marylandica L., pinkroot, Indian pink, wormgrass [Loganiaceae, logania family]

Spiranthes cernua (L.) Richard, Photo 1photo 2, common ladies' tresses, nodding ladies' tresses [Orchidaceae, orchid family]

Spiranthes tuberosa Raf., little ladies's tresses [Orchidaceae, orchid family]

Spiranthes vernalis Engelm. & Gray, Photo 1, Photo 2, Photo 3, spring ladies' tresses, twisted ladies' tresses [Orchidaceae, orchid family]

Staphylea trifolia L., flowers, fruits American bladdernut [Staphyleaceae, blatternut family]

Stellaria media (L.) Villars, common chickweed [Caryophyllaceae, pink family]

Stenanthium gramineum (Ker Gawler) Morong, featherbells [Liliaceae, lily family]

Stokesia laevis Hill, Stokes'Aster [Asteraceae, daisy family]

Stylophorum diphyllum (Michaux) Nutt., Photo 1, Photo 2, celandine poppy, wood poppy [Papaveraceae, poppy family]

Stylosanthes biflora (L.) Britton, Sterns & Pogg., pencil flower [Fabaceae, bean family]

Styrax americana Lam., Photo 1, Photo 2, snowbell, American snowbell, mock orange [Styraceae, styrax family]

Sullivantia renifolia C. Rosend., [Saxifragaceae, saxifrage family]  = Sullivantia sullivantii (Torr. & A. Gray) Britton fide Yatskievych 2013

 Symphiocarpus orbicularis Moench. f. orbicularis, Photo 1, Photo 2, Fruit, coral berry, Indian current, buckbrush [Caprifoliaceae, honesuckle family]

Symphyotrichum anomalum (Engelm. ex Torr. & Gray) Gl. L. Nesson, aster (Asteraceae, daisy family]

Symphyotrichum cordifolium (L.) G. L. Nesom, Photo 1, Photo 2, blue wood aster [Asteraceae, daisy family]

Sympohyotrichum ericoides (L.) G. L. Nesom, wreath aster [Asteraceae, daisy family]

Symphyotrichum lanceolatum ( Wild.) G. L. Nesom, tall white aster, panicled aster [Astreaceae, daisy family]

Symphyotrichum laterifolium (L.) Ά Lőve & D. Lőve.  Photo 1, Photo 2, white woodland aster [Asteraceae, daisy family]

Symphyotrichum novae-angliae (L.) G. L. Nesom, New England aster [Asteraceae, daisy family]

Symphyotrichum oblongifolium (Nutt) G. L. Nesom, aromatic aster, oblonged-leaf aster [Asteraceae, daisy family]

 Symphyotrichum oolentangiense (Riddell) G. L. Nesom, azure aster, blue devil [Asteraceae, daisy family]

Symphyotrichum patens (Aiton) G. L. Nesom, Photo 1, Photo 2, spreading aster, purple daisy [Asteraceae, daisy family]

Symphyotrichum pilosum (Willd.) G. L. Nesom Willd., Photo 1, Photo 2, white heath aster [Asteraceae, daisy family]

]Symphyotrichum praeltum (Poir.) G. L. Nesom, Photo 1, Photo 2, willow-leaved aster [Asteraceae, Daisy family]

Symphyotrichum urophyllum (Lindl. ex DC.) G. L. Nesom, Photo 1, leaves, aster [Asteraceae, daisy family]

Symphytum officinale L., Photo 1Photo 2, Common comfrey [Boraginaceae, borage family]

Syringia reticulata (Blume) Hara, Photo1, Photo 2, Japanese tree lilac [Oleaceae, olive family]

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