Seeds Prohibited Entry into the U.S. - S
| Botanical Name | Authority |
|---|---|
| Saccharum spp. | NAPPRA |
| xSaccharum | NAPPRA |
| Saccharum spontaneum | NW |
| Saccharum officinarum and hybrids | FSA-A |
| Sagittaria fasciculata | FSA-A |
| Sagittaria pygmaea | NAPPRA |
| Sagittaria fasciculata | ESA-E |
| Sagittaria sagittifolia | NW |
| Sagittaria secundifolia | ESA-T |
| Salsola vermiculata | NW |
| Salvia officinalis | FSA-V |
| Salvia verbenaca | NARGS |
| Salvinia auriculata | NW |
| Salvinia biloba | NW |
| Salvinia herzogii | NW |
| Salvinia molesta | NW |
| Sanguisorba minor | FSA-A |
| Sanicula mariversa | ESA-E |
| Sanicula purpurea | ESA-E |
| Sanicula sandwicensis | ESA-E |
| Santalum spp. | Parasitic |
| Santalum freycinetianum v. lanaiense (S. haleakalae v. lanaiense) | ESA-E |
| Santranala decussilvae | CITES |
| Sapria spp. | Parasitic |
| Sarcodes spp. | NW |
| Sarcomelicope spp. | Treatment |
| Sarcophyte spp. | Parasitic |
| Sargentia spp. | Treatment |
| Sarocalamus spp. | NAPPRA |
| Sarracenia alabamensis (= rubra ssp. alabamensis) | ESA-E |
| Sarracenia oreophila | ESA-E |
| Sarracenia jonesii (= rubra ssp. jonesii) | ESA-E, CITES |
| Sarracenia oreophila | ESA-E, CITES |
| Sasa spp. | NAPPRA |
| Sasaella (= Sasa x Arundinaria) spp. | NAPPRA |
| Sasamorpha (= Sasa) spp. | NAPPRA |
| Satureja hortensis | FSA-V |
| Saussurea costus (= lappa) | CITES |
| Scaevola coriacea | ESA-E |
| Schenkia sebaeoides | ESA-E |
| Schiedea adamantis | ESA-E |
| Schiedea apokremnos | ESA-E |
| Schiedea attenuata | ESA-E |
| Schiedea diffusa ssp. macraei; S. d. ssp. diffusa | ESA-E |
| Schiedea haleakalensis | ESA-E |
| Schiedea hawaiiensis | ESA-E |
| Schiedea helleri | ESA-E |
| Schiedea hookeri | ESA-E |
| Schiedea jacobii | ESA-E |
| Schiedea kaalae | ESA-E |
| Schiedea kauaiensis | ESA-E |
| Schiedea kealiae | ESA-E |
| Schiedea laui | ESA-E |
| Schiedea lychnoides | ESA-E |
| Schiedea lydgatei | ESA-E |
| Schiedea membranacea | ESA-E |
| Schiedea nuttallii | ESA-E |
| Schiedea obovata | ESA-E |
| Schiedea pubescens | ESA-E |
| Schiedea salicaria | ESA-E |
| Schiedea sarmentosa | ESA-E |
| Schiedea spergulina v. leiopoda; v. spergulina | ESA-E |
| Schiedea stellarioides | ESA-E |
| Schiedea trinervis | ESA-E |
| Schiedea verticillata | ESA-E |
| Schiedea viscosa | ESA-E |
| Schizachyrium scoparium | FSA-A |
| Schizostachyum spp. | NAPPRA |
| Schoepfia arenaria | ESA-T |
| Schlerachne spp. | Q37 |
| Schoenocrambe (= Hesperidanthus) argillacea | ESA-T |
| Schoenocrambe (= Hesperidanthus) barnebyi | ESA-E |
| Schoenocrambe (= Hesperidanthus) suffrutescens | ESA-E |
| Schoepfia spp. | Parasitic |
| Schwalbea americana | ESA-E |
| Schwalbea spp. | Parasitic |
| Sclerache (= Chionache) spp. | Poa. |
| Sclerocactus blainei | CITES |
| Sclerocactus (= Ancistrocactus/ Ferocactus) brevihamatus ssp. tobuschii | CITES |
| Sclerocactus brevispinus | CITES |
| Sclerocactus cloverae | CITES |
| Sclerocactus mesa-verde | CITES |
| Sclerocactus erectocentrus | CITES |
| Sclerocactus (= Ferocactus) glaucus (= brevispinus; wetlandicus spp. ilsea) | CITES |
| Sclerocactus (= Echinomastus/ Neolloydia/ Pediocactus) mariposensis | CITES |
| Sclerocactus (= Ferocactus) nyensis | CITES |
| Sclerocactus papyracanthus | CITES |
| Sclerocactus (= Ferocactus/ Pediocactus) pubispinus | CITES |
| Sclerocactus sileri | CITES |
| Sclerocactus (= Pediocactus/ Ferocactus) wrightii | CITES |
| Sclerocactus (= Pediocactus/ Toumeya) papyracanthus | CITES |
| Sclerocactus brevihamatus ssp. tobuschii | CITES |
| Sclerocactus brevispinus | CITES |
| Sclerocactus wetlandicus | CITES |
| Sclerocactus wrightii | CITES |
| Scleropyrum spp. | Parasitic |
| Scorodocarpus spp. | Parasitic |
| Scurrula spp. | Parasitic |
| Scutellaria floridana | ESA-T |
|
Scutellaria montana Scutellaria ocmulgee |
ESA-T ESA-T |
| Scybalium spp. | Parasitic |
| Seacale cereale | FSA-A |
| Secale strictum | FSA-A |
| Securgera varia | FSA-A |
| Sedella leiocarpa (Parvisedum leiocarpum) | ESA-E |
| Seeds of all kinds when in pulp | NAPPRA |
| Semiarundinaria spp. | NAPPRA |
| Senecio angulatus | NAPPRA |
| Senecio glastifolius | NAPPRA |
| Senecio inaequidens | NW |
| Senecio layneae | ESA-T |
| Senecio madagascariensis | NW |
| Senna meridionalis | CITES |
| Septulina spp. | Parasitic |
| Serianthes nelsonii | ESA-E |
| Sesamum indicum | FSA-A |
| Sesbania exaltata | FSA-A |
| Sesbania tomentosa | ESA-E |
| Setaria italica ssp. italica | NAPPRA |
| Setaria pumila ssp. subtesselata | NW |
| Setaria pallidfusca | NW |
| Setaria spp. | Q37 |
| Severinia spp. | NAPPRA |
| Seymeria spp. | Parasitic |
| Seymeriopsis spp. | Parasitic |
| Sheilanthera spp. | Treatment |
| Shibataea spp. | NAPPRA |
| Sibara filifolia | ESA-E |
| Sicyos alba | ESA-E |
| Sicyos lanceoloideus | ESA-E |
| Sicyos macrophyllus | ESA-E |
| Sidalcea keckii | ESA-E |
| Sidalcea oregana ssp. valida | ESA-E |
| Sidalcea oregana v. calva | ESA-E |
| Sidalcea pedata | ESA-E |
| Sideroxylon reclinatum ssp. austrofloridense | ESA-T |
| Sieversandreas spp. | Parasitic |
| Sigmatanthus spp. | Treatment |
| Silene alexandri | ESA-E |
| Silene catesbaei (syn. polypetala) | ESA-E |
| Silene hawaiiensis | ESA-T |
| Silene lanceolata | ESA-E |
| Silene perlmanii | ESA-E |
| Silene polypetala | ESA-E |
| Silene spaldingii | ESA-T |
| Silviella spp. | Parasitic |
| Sinapis alba | FSA-A |
| Sinarundinaria (= Fargesia) spp. | NAPPRA |
| Sinobambusa spp. | NAPPRA |
| Sinocalamus (= Dendrocalamus) spp. | NAPPRA |
| Siphonostegia spp. | Parasitic |
| Sirochloa spp. | NAPPRA |
| Sisyrinchium dichotomum | ESA-E |
| Skimmia spp. | Treatment |
| Socratina spp. | Parasitic |
| Soejatmia spp. | NAPPRA |
| Sogerianthe spp. | Parasitic |
| Sokinochloa spp. | NAPPRA |
| Solanum drymophilum (syn: ensifolium) | ESA-E |
| Solanum guamense | ESA-E |
| Solanum incompletum | ESA-E |
| Solanum melongena | FSA-V |
| Solanum lycopersicum | FSA-V |
| Solanum nelsonii | ESA-E |
| Solanum sandwicense | ESA-E |
| Solanum spp. Section Tuberarium | NAPPRA |
| Solanum tampicense | NW |
| Solanum torvum | NW |
| Solanum tuberosum | NAPPRA |
| Solanum viarum | NW |
| Solidago houghtonii | ESA-T |
| Solidago shortii | ESA-E |
| Solidago spithamea | ESA-T |
| Solidago shortii | ESA |
| Solisia pectinata (= Mammillaria pectinifera) | CITES |
| Sonchus arvensis | NW |
| Sopubia spp. | Parasitic |
| Sorghastrum nutans | FSA-A |
| Sorghum bicolor | 319 FSA-A |
| Sorghum halepense | NW |
| Sorghum spp. and hybrids | NAPPRA |
| Sparganium erectum | NW |
| Spathelia spp. | Treatment |
| Spermacoce (= Borreria) alata | NW |
| Spermolepis hawaiiensis | ESA-E |
| Sphaeralcea gierischii | ESA-E |
| Sphaerobambos spp. | NAPPRA |
| Spigelia gentianoides | ESA-E |
| Spinacia oleracea | FSA-V |
| Spiraea virginiana | ESA-T |
| Spiranthera spp. | Treatment |
| Spiranthes diluvialis | ESA-T |
| Spiranthes delitescens | ESA-E |
| Spiranthes parksii | ESA-E |
| Spirodardnera spp. | Parasitic |
| Spirostegia spp. | Parasitic |
| Sporobolus cryptandrus | FSA-A |
| Spragueanella spp. | Parasitic |
| Stahlia monosperma | ESA-T |
| Stangeria eriopus (= paradoxa) | CITES |
| Stapletonia spp. | NAPPRA |
| Staufferia spp. | Parasitic |
| Stauranthus spp. | Treatment |
| Stenogyne angustifolia v. angustifolia | ESA-E |
| Stenogyne bifida | ESA-E |
| Stenogyne campanulate | ESA-E |
| Stenogyne cranwelliae | ESA-E |
| Stenogyne kaalae spp. sheriffii | ESA-E |
| Stenogyne kanehoana | ESA-E |
| Stenogyne kauaulaensis | ESA-E |
| Stenogyne kealiae | ESA-E |
| Stephanomeria malheurensis | ESA-E |
| Stipa viridula | FSA-A |
| Stratiotes aloides | NW |
| Streptanthus albidus ssp. albidus (syn: glandulosus) | ESA-E |
| Streptanthus (Caulanthus) californicus | ESA-E |
| Streptanthus bracteatus | ESA-T |
| Streptanthus niger (syn: glandulosus ssp. niger) | ESA-T |
| Striga spp. | Parasitic |
| Strombocactus spp. | CITES |
| Strombosia spp. | Parasitic |
| Strombosiopsis spp. | Parasitic |
| Struthanthus spp. | Parasitic |
| Styrax platanifolius ssp. texanus | ESA-E |
| Styrax portoricensis | ESA-E |
| Suaeda californica | ESA-E |
| Swallenia alexandrae | ESA-T |
| Swallenochloa (= Chusquea) spp. | NAPPRA |
| Swinglea spp. | NAPPRA |