| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| SARA7 | Saxifraga razshivinii Rhmylev | Alaska saxifrage | Saxifragaceae
|
| SARE11 | Saxifraga redofskii M.F. Adams | manyflower saxifrage | Saxifragaceae
|
| SARE23 | Saxifraga reevesii Cory | Saxifraga texana | Saxifragaceae
|
| SAREO2 | Saxifraga reflexa Hook. ssp. occidentalis (S. Wats.) Hult�n | Saxifraga occidentalis | Saxifragaceae
|
| SARE8 | Saxifraga reflexa Hook. | reflexed saxifrage | Saxifragaceae
|
| SARHA | Saxifraga rhomboidea Greene var. austrina A. Nels. | Saxifraga rhomboidea | Saxifragaceae
|
| SARHF | Saxifraga rhomboidea Greene var. franciscana (Small) Kearney & Peebles | Saxifraga rhomboidea | Saxifragaceae
|
| SARH2 | Saxifraga rhomboidea Greene | diamondleaf saxifrage | Saxifragaceae
|
| SARI7 | Saxifraga richardsonii Hook. | Boykinia richardsonii | Saxifragaceae
|
| SARIF2 | Saxifraga rivularis L. ssp. flexuosa (Sternb.) Gjaerev. | Saxifraga rivularis | Saxifragaceae
|
| SARID | Saxifraga rivularis L. var. debilis (Engelm. ex Gray) Dorn | Saxifraga rivularis | Saxifragaceae
|
| SARIF | Saxifraga rivularis L. var. flexuosa (Sternb.) Engl. & Irmsch. | Saxifraga rivularis | Saxifragaceae
|
| SARIH | Saxifraga rivularis L. var. hyperborea (R. Br.) Dorn | Saxifraga hyperborea | Saxifragaceae
|
| SARIL2 | Saxifraga rivularis L. var. laurentiana (Ser.) Engl. | Saxifraga sibirica | Saxifragaceae
|
| SARI8 | Saxifraga rivularis L. | weak saxifrage | Saxifragaceae
|
| SARU7 | Saxifraga rufidula (Small) Macoun | rustyhair saxifrage | Saxifragaceae
|
| SARU8 | Saxifraga rufopilosa (Hult�n) Porsild | redhair saxifrage | Saxifragaceae
|
| SARY2 | Saxifraga rydbergii Small | Saxifraga subapetala | Saxifragaceae
|
| SASA6 | Saxifraga sarmentosa L. | Saxifraga stolonifera | Saxifragaceae
|
| SASEC | Saxifraga serpyllifolia Pursh ssp. chrysantha (Gray) W.A. Weber | Saxifraga chrysantha | Saxifragaceae
|
| SASEC2 | Saxifraga serpyllifolia Pursh var. chrysantha (Gray) Dorn | Saxifraga chrysantha | Saxifragaceae
|
| SASEP | Saxifraga serpyllifolia Pursh var. purpurea Hult�n | Saxifraga serpyllifolia | Saxifragaceae
|
| SASE7 | Saxifraga serpyllifolia Pursh | thymeleaf saxifrage | Saxifragaceae
|
| SASE13 | Saxifraga setigera Pursh | Saxifraga flagellaris ssp. setigera | Saxifragaceae
|
| SASI6 | Saxifraga sibirica L. | bract saxifrage | Saxifragaceae
|
| SASI7 | Saxifraga sibthorpii Boiss. | yellow saxifrage | Saxifragaceae
|
| SASI9 | Saxifraga sileneflora Sternb. ex Cham. | Saxifraga caespitosa ssp. sileneflora | Saxifragaceae
|
| SASP4 | Saxifraga spicata D. Don | spiked saxifrage | Saxifragaceae
|
| SASTC | Saxifraga stellaris L. var. comosa Poir. | Saxifraga foliolosa | Saxifragaceae
|
| SAST6 | Saxifraga stolonifera Meerb. | creeping saxifrage | Saxifragaceae
|
| SASU6 | Saxifraga subapetala E. Nels. | Yellowstone saxifrage | Saxifragaceae
|
| SASU12 | Saxifraga sullivantii Torr. & Gray | Sullivantia sullivantii | Saxifragaceae
|
| SATE5 | Saxifraga tempestiva Elvander & Denton | storm saxifrage | Saxifragaceae
|
| SATE9 | Saxifraga tenuis (Wahlenb.) H. Sm. ex Lindm. | Ottertail Pass saxifrage | Saxifragaceae
|
| SATE4 | Saxifraga texana Buckl. | Texas saxifrage | Saxifragaceae
|
| SATI3 | Saxifraga tischii Skelly | Olympic saxifrage | Saxifragaceae
|
| SATOL | Saxifraga tolmiei Torr. & Gray var. ledifolia (Greene) Engl. & Irmsch. | Saxifraga tolmiei | Saxifragaceae
|
| SATO2 | Saxifraga tolmiei Torr. & Gray | Tolmie's saxifrage | Saxifragaceae
|
| SATR5 | Saxifraga tricuspidata Rottb. | three toothed saxifrage | Saxifragaceae
|
| SAUM2 | Saxifraga umbellulata sensu Greene, non Hook. & Thomas | Saxifraga aprica | Saxifragaceae
|
| SAUN4 | Saxifraga unalaschcensis Sternb. | Leptarrhena pyrolifolia | Saxifragaceae
|
| SAVE9 | Saxifraga vespertina (Small) Fedde | Saxifraga bronchialis ssp. vespertina | Saxifragaceae
|
| SAVIC | Saxifraga virginiensis Michx. var. californica (Greene) Jepson | Saxifraga californica | Saxifragaceae
|
| SAVIS | Saxifraga virginiensis Michx. var. subintegra Goodman | Oklahoma saxifrage | Saxifragaceae
|
| SAVIV | Saxifraga virginiensis Michx. var. virginiensis | early saxifrage | Saxifragaceae
|
| SAVI5 | Saxifraga virginiensis Michx. | early saxifrage | Saxifragaceae
|
| SAVR2 | Saxifraga vreelandii (Small) Fedde ex Just | Saxifraga ferruginea var. vreelandii | Saxifragaceae
|
| SAXIF | Saxifraga L. | saxifrage | Saxifragaceae
|
| SAFR5 | Saxifragopsis fragarioides (Greene) Small | strawberry saxifrage | Saxifragaceae
|
| SAXIF2 | Saxifragopsis Small | saxifragopsis | Saxifragaceae
|
| SCAR6 | Scabiosa arvensis L. | Knautia arvensis | Dipsacaceae
|
| SCAT | Scabiosa atropurpurea L. | mourningbride | Dipsacaceae
|
| SCAU2 | Scabiosa australis Wulfen | Succisella inflexa | Dipsacaceae
|
| SCCA21 | Scabiosa caucasica M. Bieb. | Caucasian pincushion flower | Dipsacaceae
|
| SCCO6 | Scabiosa columbaria L. | dove pincushions | Dipsacaceae
|
| SCOC3 | Scabiosa ochroleuca L. | cream pincushions | Dipsacaceae
|
| SCPA22 | Scabiosa palaestrina L. | Balkan pincushions | Dipsacaceae
|
| SCST | Scabiosa stellata L. | starflower pincushions | Dipsacaceae
|
| SCSU6 | Scabiosa succisa L. | Succisa pratensis | Dipsacaceae
|
| SCABI | Scabiosa L. | pincushions | Dipsacaceae
|
| SCMUK | Scadoxus multiflorus (Martyn) Raf. ssp. katherinae (Baker) Friis & Nordal | Katherine-wheel | Liliaceae
|
| SCMU13 | Scadoxus multiflorus (Martyn) Raf. | | Liliaceae
|
| SCADO | Scadoxus Rafin. | scadoxus | Liliaceae
|
| SCCE3 | Scaevola �cerasifolia Skottsberg (pro sp.) | | Goodeniaceae
|
| SCCHB | Scaevola chamissoniana Gaud. var. bracteosa Hbd. | Scaevola chamissoniana | Goodeniaceae
|
| SCCHC | Scaevola chamissoniana Gaud. var. caerulescens Levl. | Scaevola chamissoniana | Goodeniaceae
|
| SCCHC2 | Scaevola chamissoniana Gaud. var. cylindrocarpa (Hbd.) Krause | Scaevola chamissoniana | Goodeniaceae
|
| SCCHH | Scaevola chamissoniana Gaud. var. hitchcockii Skottsberg | Scaevola chamissoniana | Goodeniaceae
|
| SCCHP | Scaevola chamissoniana Gaud. var. piccoi O.& I. Deg. | Scaevola chamissoniana | Goodeniaceae
|
| SCCH3 | Scaevola chamissoniana Gaud. | naupaka kuahiwi | Goodeniaceae
|
| SCCO7 | Scaevola coriacea Nutt. | dwarf naupaka | Goodeniaceae
|
| SCGAD | Scaevola gaudichaudiana Cham. var. dentata Krause | Scaevola gaudichaudiana | Goodeniaceae
|
| SCGAP2 | Scaevola gaudichaudiana Cham. var. pilosa Krause | Scaevola gaudichaudiana | Goodeniaceae
|
| SCGAS | Scaevola gaudichaudiana Cham. var. stenolithos Skottsberg | Scaevola gaudichaudiana | Goodeniaceae
|
| SCGA2 | Scaevola gaudichaudiana Cham. | mountain naupaka | Goodeniaceae
|
| SCGA3 | Scaevola gaudichaudii Hook. & Arn. | ridgetop naupaka | Goodeniaceae
|
| SCGL5 | Scaevola glabra Hook. & Arn. | 'ohe naupaka | Goodeniaceae
|
| SCHO10 | Scaevola hobdyi W.L. Wagner | Hobdy's naupaka | Goodeniaceae
|
| SCKA2 | Scaevola kauaiensis (O. Deg.) St. John | Scaevola glabra | Goodeniaceae
|
| SCKIP | Scaevola kilaueae O. Deg. var. powersii O.& I. Deg. | Scaevola kilaueae | Goodeniaceae
|
| SCKI | Scaevola kilaueae O. Deg. | huahekili uka | Goodeniaceae
|
| SCMO5 | Scaevola mollis Hook. & Arn. | purple naupaka | Goodeniaceae
|
| SCPL | Scaevola plumieri (L.) Vahl | gullfeed | Goodeniaceae
|
| SCPRP | Scaevola procera Hbd. var. pseudomollis Skottsberg | Scaevola mollis | Goodeniaceae
|
| SCPR | Scaevola procera Hbd. | forest naupaka | Goodeniaceae
|
| SCSES | Scaevola sericea Vahl var. sericea | beach naupaka | Goodeniaceae
|
| SCSET | Scaevola sericea Vahl var. taccada (Gaertn.) Thieret & B. Lipscomb | beach naupaka | Goodeniaceae
|
| SCSE6 | Scaevola sericea Vahl | beach naupaka | Goodeniaceae
|
| SCSK | Scaevola skottsbergii St. John | Scaevola gaudichaudiana | Goodeniaceae
|
| SCTAB | Scaevola taccada (Gaertn.) Roxb. var. bryanii St. John | Scaevola sericea var. sericea | Goodeniaceae
|
| SCTAF | Scaevola taccada (Gaertn.) Roxb. var. fauriei (Levl.) St. John | Scaevola sericea var. sericea | Goodeniaceae
|
| SCTAS | Scaevola taccada (Gaertn.) Roxb. var. sericea (Vahl) St. John | Scaevola sericea var. sericea | Goodeniaceae
|
| SCTA | Scaevola taccada (Gaertn.) Roxb. | Scaevola sericea var. taccada | Goodeniaceae
|
| SCAEV | Scaevola L. | naupaka | Goodeniaceae
|
| SCCE4 | Scandix cerefolium L. | Anthriscus cerefolium | Apiaceae
|
| SCPE | Scandix pecten-veneris L. | shepherdsneedle | Apiaceae
|
| SCAND | Scandix L. | scandix | Apiaceae
|
| SCAE2 | Scapania aequiloba (Schw�gr.) Dumort. | | Scapaniaceae
|
| SCAM11 | Scapania americana M�ll. Frib. | | Scapaniaceae
|
| SCAP4 | Scapania apiculata Spruce | | Scapaniaceae
|
| SCBO4 | Scapania bolanderi Austin | | Scapaniaceae
|