| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| SCHOE5 | Schoepfia Schreb. | schoepfia | Olacaceae
|
| SCMO11 | Schofieldia monticola J. D. Godfrey | | Cephaloziaceae
|
| SCHOF | Schofieldia J. D. Godfrey | | Cephaloziaceae
|
| SCEX2 | Schradera exotica (J.F. Gmel.) Standl. | yellowshrub | Rubiaceae
|
| SCVA4 | Schradera vahlii Steyermark | Schradera exotica | Rubiaceae
|
| SCHRA2 | Schradera Vahl | schradera | Rubiaceae
|
| SCAN9 | Schrankia angustata Torr. & Gray | Mimosa microphylla | Fabaceae
|
| SCFL7 | Schrankia floridana Chapman | Mimosa quadrivalvis var. floridana | Fabaceae
|
| SCHY2 | Schrankia hystricina (Small ex Britt. & Rose) Standl. | Mimosa hystricina | Fabaceae
|
| SCLA3 | Schrankia latidens (Small) K. Schum. | Mimosa latidens | Fabaceae
|
| SCLE3 | Schrankia leptocarpa DC. | Mimosa quadrivalvis var. leptocarpa | Fabaceae
|
| SCMIF | Schrankia microphylla (Dry.) J.F. Macbr. var. floridana (Chapman) Isley | Mimosa quadrivalvis var. floridana | Fabaceae
|
| SCMI | Schrankia microphylla (Dry.) J.F. Macbr. | Mimosa microphylla | Fabaceae
|
| SCNUH2 | Schrankia nuttalii (DC. ex Britt. & Rose) Standl. var. hystricina (Small ex Britt. & Rose) Isley | Mimosa hystricina | Fabaceae
|
| SCNU | Schrankia nuttallii (DC.) Standl. | Mimosa nuttallii | Fabaceae
|
| SCOC | Schrankia occidentalis (Woot. & Standl.) Standl. | Mimosa rupertiana | Fabaceae
|
| SCPO3 | Schrankia portoricensis Urban | Mimosa quadrivalvis var. urbaniana | Fabaceae
|
| SCRO4 | Schrankia roemeriana (Scheele) Blank. | Mimosa roemeriana | Fabaceae
|
| SCUN | Schrankia uncinata Willd. | Mimosa microphylla | Fabaceae
|
| SCBR7 | Schultesia brachyptera Cham. | short wingcup | Gentianaceae
|
| SCHE3 | Schultesia heterophylla Miq. | Caribbean wingcup | Gentianaceae
|
| SCHUL | Schultesia Mart. | wingcup | Gentianaceae
|
| SCAMA | Schwalbea americana L. var. australis (Pennell) Reveal & Broome | Schwalbea americana | Scrophulariaceae
|
| SCAM | Schwalbea americana L. | chaffseed | Scrophulariaceae
|
| SCAU6 | Schwalbea australis Pennell | Schwalbea americana | Scrophulariaceae
|
| SCHWA | Schwalbea L. | schwalbea | Scrophulariaceae
|
| SCDE5 | Schwetschkeopsis denticulata (Sull.) Broth. | Schwetschkeopsis fabronia | Myriniaceae
|
| SCFA3 | Schwetschkeopsis fabronia (Schwaegr.) Broth. | schwetschkeopsis moss | Myriniaceae
|
| SCHWE | Schwetschkeopsis Broth. | schwetschkeopsis moss | Myriniaceae
|
| SCSI4 | Sciacassia siamea (Lam.) Britt. ex Britt. & Rose | Senna siamea | Fabaceae
|
| SCFR2 | Sciaromium fryei Williams | Limbella fryei | Amblystegiaceae
|
| SCLE5 | Sciaromium lescurii (Sull. in Gray) Broth. | Platylomella lescurii | Amblystegiaceae
|
| SCIAR | Sciaromium Mitt. | sciaromium | Amblystegiaceae
|
| SCNO | Scilla nonscripta (L.) Hoffmgg. & Link | Hyacinthoides nonscripta | Liliaceae
|
| SCPE13 | Scilla peruviana L. | Oncostema peruviana | Liliaceae
|
| SCSI2 | Scilla siberica Haw. | Siberian squill | Liliaceae
|
| SCVE10 | Scilla verna Huds. | Oncostema verna | Liliaceae
|
| SCILL | Scilla L. | scilla | Liliaceae
|
| SCAU3 | Scindapsus aureus (Lindl. & Andr�) Engl. | Epipremnum pinnatum | Araceae
|
| SCGH | Scirpodendron ghaeri Merrill | | Cyperaceae
|
| SCIRP3 | Scirpodendron Zipp. ex Kurz | | Cyperaceae
|
| SCHO6 | Scirpoides holoschoenus (L.) Soj�k | roundhead bulrush | Cyperaceae
|
| SCIRP2 | Scirpoides Seguier | bulrush | Cyperaceae
|
| SCACO4 | Scirpus acutus Muhl. ex Bigelow var. occidentalis (S. Wats.) Beetle | Schoenoplectus acutus var. occidentalis | Cyperaceae
|
| SCAC | Scirpus acutus Muhl. ex Bigelow | Schoenoplectus acutus var. acutus | Cyperaceae
|
| SCAE | Scirpus aestivalis Retz. | Fimbristylis aestivalis | Cyperaceae
|
| SCAML | Scirpus americanus Pers. var. longispicatus Britt. | Schoenoplectus pungens var. longispicatus | Cyperaceae
|
| SCAMM | Scirpus americanus Pers. var. monophyllus (J.& K. Presl) T. Koyama | Schoenoplectus pungens var. badius | Cyperaceae
|
| SCAMP | Scirpus americanus Pers. var. polyphyllus (Boeckl.) Beetle | Schoenoplectus pungens var. pungens | Cyperaceae
|
| SCAM2 | Scirpus americanus Pers. | Schoenoplectus americanus | Cyperaceae
|
| SCAM7 | Scirpus americanus auct. non Pers. | Schoenoplectus pungens var. pungens | Cyperaceae
|
| SCAN5 | Scirpus ancistrochaetus Schuyler | barbedbristle bulrush | Cyperaceae
|
| SCAN8 | Scirpus annuus All. | Fimbristylis annua | Cyperaceae
|
| SCAT4 | Scirpus atrocinctus Fern. | blackgirdle bulrush | Cyperaceae
|
| SCAT5 | Scirpus atropurpureus Retz. | Eleocharis atropurpurea | Cyperaceae
|
| SCATF | Scirpus atrovirens Willd. var. flaccidifolius Fern. | Scirpus flaccidifolius | Cyperaceae
|
| SCATG | Scirpus atrovirens Willd. var. georgianus (Harper) Fern. | Scirpus georgianus | Cyperaceae
|
| SCATP2 | Scirpus atrovirens Willd. var. pallidus Britt. | Scirpus pallidus | Cyperaceae
|
| SCAT2 | Scirpus atrovirens Willd. | green bulrush | Cyperaceae
|
| SCAU4 | Scirpus autumnalis L. | Fimbristylis autumnalis | Cyperaceae
|
| SCBA3 | Scirpus barbatus Rottb. | Bulbostylis barbata | Cyperaceae
|
| SCBE | Scirpus bergsonii Schuyler | Schoenoplectus saximontanus | Cyperaceae
|
| SCCAA | Scirpus caespitosus L. var. austriacus (Pallas) Aschers. & Graebn. | Trichophorum caespitosum | Cyperaceae
|
| SCCAC3 | Scirpus caespitosus L. var. callosus Bigelow | Trichophorum caespitosum | Cyperaceae
|
| SCCAD2 | Scirpus caespitosus L. var. delicatulus Fern. | Trichophorum caespitosum | Cyperaceae
|
| SCCA27 | Scirpus caespitosus L. | Trichophorum caespitosum | Cyperaceae
|
| SCCAT | Scirpus californicus (C.A. Mey.) Steud. var. tereticulmis (Steud.) Beetle | Schoenoplectus californicus | Cyperaceae
|
| SCCA | Scirpus californicus (C.A. Mey.) Steud. | Schoenoplectus californicus | Cyperaceae
|
| SCCA7 | Scirpus capillaris L. | Bulbostylis capillaris ssp. capillaris | Cyperaceae
|
| SCCA8 | Scirpus caribaea Rottb. | Eleocharis geniculata | Cyperaceae
|
| SCCA10 | Scirpus carinatus (Hook. & Arn. ex Torr.) Gray, non Sm. | Isolepis carinata | Cyperaceae
|
| SCCA9 | Scirpus carolinianus Lam. | Fimbristylis caroliniana | Cyperaceae
|
| SCCA12 | Scirpus castaneus Michx. | Fimbristylis castanea | Cyperaceae
|
| SCCEC2 | Scirpus cernuus Vahl ssp. californicus (Torr.) Thorne | Isolepis cernua | Cyperaceae
|
| SCCEC4 | Scirpus cernuus Vahl var. californicus (Torr.) Beetle | Isolepis cernua | Cyperaceae
|
| SCCE6 | Scirpus cernuus Vahl p.p. | Isolepis cernua | Cyperaceae
|
| SCCEA | Scirpus cespitosus L. var. austriacus (Pallas) Aschers. & Graebn. [orthographic variant] | Trichophorum caespitosum | Cyperaceae
|
| SCCEC3 | Scirpus cespitosus L. var. callosus Bigelow [orthographic variant] | Trichophorum caespitosum | Cyperaceae
|
| SCCED | Scirpus cespitosus L. var. delicatulus Fern. [orthographic variant] | Trichophorum caespitosum | Cyperaceae
|
| SCCE2 | Scirpus cespitosus L. [orthographic variant] | Trichophorum caespitosum | Cyperaceae
|
| SCCH5 | Scirpus chilensis Nees & Meyen ex Kunth | Schoenoplectus americanus | Cyperaceae
|
| SCCI3 | Scirpus ciliatifolius Ell. | Bulbostylis ciliatifolia var. ciliatifolia | Cyperaceae
|
| SCCL | Scirpus clementis M.E. Jones | Trichophorum clementis | Cyperaceae
|
| SCCL2 | Scirpus clintonii Gray | Trichophorum clintonii | Cyperaceae
|
| SCCO11 | Scirpus coarctatus Ell. | Bulbostylis ciliatifolia var. coarctata | Cyperaceae
|
| SCCO13 | Scirpus complanatus Retz. | Fimbristylis complanata | Cyperaceae
|
| SCCO15 | Scirpus confervoides Poir. | Websteria confervoides | Cyperaceae
|
| SCCO | Scirpus congdonii Britt. | Congdon's bulrush | Cyperaceae
|
| SCCO17 | Scirpus conglomeratus Kunth | Schoenoplectus americanus | Cyperaceae
|
| SCCO2 | Scirpus �contortus (Eames) T. Koyama | Schoenoplectus contortus | Cyperaceae
|
| SCCO12 | Scirpus corymbosus L. | Rhynchospora corymbosa | Cyperaceae
|
| SCCR6 | Scirpus criniger Gray | Eriophorum crinigerum | Cyperaceae
|
| SCCU | Scirpus cubensis Poepp. & Kunth | Oxycaryum cubense | Cyperaceae
|
| SCCY2 | Scirpus cylindricus (Torr.) Britt. | Schoenoplectus novae-angliae | Cyperaceae
|
| SCCYB | Scirpus cyperinus (L.) Kunth var. brachypodus (Fern.) Gilly | Scirpus atrocinctus | Cyperaceae
|
| SCCYC | Scirpus cyperinus (L.) Kunth var. condensatus Fern. | Scirpus cyperinus | Cyperaceae
|
| SCCYE8 | Scirpus cyperinus (L.) Kunth var. eriophorum (Michx.) Kunth | Scirpus cyperinus | Cyperaceae
|
| SCCYL | Scirpus cyperinus (L.) Kunth var. laxus (Gray) Beetle | Scirpus cyperinus | Cyperaceae
|
| SCCYP2 | Scirpus cyperinus (L.) Kunth var. pedicellatus (Fern.) Schuyler | Scirpus pedicellatus | Cyperaceae
|
| SCCYP | Scirpus cyperinus (L.) Kunth var. pelius Fern. | Scirpus cyperinus | Cyperaceae
|
| SCCYR | Scirpus cyperinus (L.) Kunth var. rubricosus (Fern.) Gilly | Scirpus cyperinus | Cyperaceae
|