| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| SCAPG | Schistidium apocarpum (Hedw.) Bruch & Schimp. in B.S.G. var. gracile (Web. & Mohr ex Nees et al.) Bruch & Schimp. in B.S.G. | Schistidium apocarpum | Grimmiaceae
|
| SCAPN | Schistidium apocarpum (Hedw.) Bruch & Schimp. in B.S.G. var. nigrescens (Mol.) Loeske | Schistidium apocarpum | Grimmiaceae
|
| SCAPP | Schistidium apocarpum (Hedw.) Bruch & Schimp. in B.S.G. var. pulvinatum (Hedw.) C. Jens. in Weim. | Schistidium pulvinatum | Grimmiaceae
|
| SCAPS | Schistidium apocarpum (Hedw.) Bruch & Schimp. in B.S.G. var. strictum (Turn.) Moore | Schistidium apocarpum | Grimmiaceae
|
| SCAP70 | Schistidium apocarpum (Hedw.) Bruch & Schimp. in B.S.G. | schistidium moss | Grimmiaceae
|
| SCAT6 | Schistidium atrofuscum (Schimp.) Limpr. | Schistidium apocarpum | Grimmiaceae
|
| SCBR10 | Schistidium brunnescens Limpr. | Schistidium apocarpum | Grimmiaceae
|
| SCCI5 | Schistidium cinclidodonteum (C. M�ll. in R�ll) Bremer | schistidium moss | Grimmiaceae
|
| SCCR5 | Schistidium cryptocarpum Nog. & Blum | schistidium moss | Grimmiaceae
|
| SCGR6 | Schistidium gracile (Web. & Mohr ex Nees et al.) Schleich. ex Limpr. | Schistidium apocarpum | Grimmiaceae
|
| SCHE4 | Schistidium heterophyllum (Kindb. in Mac. & Kindb.) McIntosh | schistidium moss | Grimmiaceae
|
| SCHO4 | Schistidium holmenianum Steere & Brass. | Schistidium andreaeopsis | Grimmiaceae
|
| SCMA9 | Schistidium maritimum (Turn.) Bruch & Schimp. in B.S.G. | seaside schistidium moss | Grimmiaceae
|
| SCOB4 | Schistidium obtusifolium Irel. & Crum | obtuseleaf schistidium moss | Grimmiaceae
|
| SCOC9 | Schistidium occidentale (Lawt.) Churchill | western schistidium moss | Grimmiaceae
|
| SCPL4 | Schistidium platyphyllum (Mitt.) Kindb. | Schistidium rivulare var. latifolium | Grimmiaceae
|
| SCPU12 | Schistidium pulvinatum (Hedw.) Brid. | pulvinate schistidium moss | Grimmiaceae
|
| SCRIL2 | Schistidium rivulare (Brid.) Podp. ssp. latifolium (Zett.) Bremer | Schistidium rivulare var. latifolium | Grimmiaceae
|
| SCRIL | Schistidium rivulare (Brid.) Podp. var. latifolium (Zett.) Crum & Anderson | wideleaf schistidium moss | Grimmiaceae
|
| SCRIR | Schistidium rivulare (Brid.) Podp. var. rivulare | streamside schistidium moss | Grimmiaceae
|
| SCRI4 | Schistidium rivulare (Brid.) Podp. | streamside schistidium moss | Grimmiaceae
|
| SCST9 | Schistidium strictum (Turn.) T. Kop. & Isov. in T. Kop. et al. | Schistidium apocarpum | Grimmiaceae
|
| SCTE12 | Schistidium tenerrimum (Ren. & Card.) G. Roth | Grimmia tenerrima | Grimmiaceae
|
| SCTE11 | Schistidium tenerum (Zett.) Nyh. | schistidium moss | Grimmiaceae
|
| SCTE13 | Schistidium teretinerve (Limpr.) Limpr. | Grimmia teretinervis | Grimmiaceae
|
| SCTR7 | Schistidium trichodon (Brid.) Poelt | schistidium moss | Grimmiaceae
|
| SCHIS4 | Schistidium Brid. | schistidium moss | Grimmiaceae
|
| SCIN3 | Schistophragma intermedia (Gray) Pennell | harlequin spiralseed | Scrophulariaceae
|
| SCHIS3 | Schistophragma Benth. ex Endl. | schistophragma | Scrophulariaceae
|
| SCPE9 | Schistostega pennata (Hedw.) Web. & Mohr. | schistostega moss | Schistostegaceae
|
| SCHIS5 | Schistostega Mohr | schistostega moss | Schistostegaceae
|
| SCPUP4 | Schizachne purpurascens (Torr.) Swallen var. pubescens Dore | Schizachne purpurascens | Poaceae
|
| SCPU | Schizachne purpurascens (Torr.) Swallen | false melic | Poaceae
|
| SCST7 | Schizachne stricta (Michx.) Hult�n | Schizachne purpurascens | Poaceae
|
| SCHIZ | Schizachne Hack. | false melic | Poaceae
|
| SCBR4 | Schizachyrium brevifolium (Sw.) Nees ex B�se | serillo dulce | Poaceae
|
| SCCI2 | Schizachyrium cirratum (Hack.) Woot. & Standl. | Texas bluestem | Poaceae
|
| SCCO10 | Schizachyrium condensatum (Kunth) Nees | Colombian bluestem | Poaceae
|
| SCDO2 | Schizachyrium domingense (Spreng. ex J.A. Schultes) Nash | Schizachyrium sanguineum var. hirtiflorum | Poaceae
|
| SCFE5 | Schizachyrium feense (Fourn.) A. Camus | Schizachyrium sanguineum var. hirtiflorum | Poaceae
|
| SCGR2 | Schizachyrium gracile (Spreng.) Nash | Andropogon gracilis | Poaceae
|
| SCHI4 | Schizachyrium hirtiflorum Nees | Schizachyrium sanguineum var. hirtiflorum | Poaceae
|
| SCLI11 | Schizachyrium littorale (Nash) Bickn. | shore little bluestem | Poaceae
|
| SCMA3 | Schizachyrium maritimum (Chapman) Nash | gulf bluestem | Poaceae
|
| SCNI2 | Schizachyrium niveum (Swallen) Gould | pinescrub bluestem | Poaceae
|
| SCPR3 | Schizachyrium praematurum (Fern.) C.F. Reed | Schizachyrium scoparium var. scoparium | Poaceae
|
| SCRH | Schizachyrium rhizomatum (Swallen) Gould | Florida little bluestem | Poaceae
|
| SCSAB | Schizachyrium sanguineum (Retz.) Alston var. brevipedicellatum (Beal) Hatch | Schizachyrium sanguineum var. hirtiflorum | Poaceae
|
| SCSAH | Schizachyrium sanguineum (Retz.) Alston var. hirtiflorum (Nees) Hatch | crimson bluestem | Poaceae
|
| SCSAO | Schizachyrium sanguineum (Retz.) Alston var. oligostachyum (Chapman) Hatch | Schizachyrium sanguineum var. hirtiflorum | Poaceae
|
| SCSAS | Schizachyrium sanguineum (Retz.) Alston var. sanguineum | crimson bluestem | Poaceae
|
| SCSA | Schizachyrium sanguineum (Retz.) Alston | crimson bluestem | Poaceae
|
| SCSCD2 | Schizachyrium scoparium (Michx.) Nash ssp. divergens (Hack.) Gandhi & Smeins | Schizachyrium scoparium var. divergens | Poaceae
|
| SCSCL2 | Schizachyrium scoparium (Michx.) Nash ssp. littorale (Nash) Gandhi & Smeins | Schizachyrium littorale | Poaceae
|
| SCSCN2 | Schizachyrium scoparium (Michx.) Nash ssp. neomexicanum (Nash) Gandhi & Smeins | Schizachyrium scoparium var. scoparium | Poaceae
|
| SCSCD | Schizachyrium scoparium (Michx.) Nash var. divergens (Hack.) Gould | little bluestem | Poaceae
|
| SCSCF | Schizachyrium scoparium (Michx.) Nash var. frequens (F.T. Hubbard) Gould | Schizachyrium scoparium var. scoparium | Poaceae
|
| SCSCL | Schizachyrium scoparium (Michx.) Nash var. littorale (Nash) Gould | Schizachyrium littorale | Poaceae
|
| SCSCN | Schizachyrium scoparium (Michx.) Nash var. neomexicanum (Nash) Gould | Schizachyrium scoparium var. scoparium | Poaceae
|
| SCSCP | Schizachyrium scoparium (Michx.) Nash var. polycladum (Scribn. & Ball) C.F. Reed | Schizachyrium scoparium var. scoparium | Poaceae
|
| SCSCS | Schizachyrium scoparium (Michx.) Nash var. scoparium | little bluestem | Poaceae
|
| SCSCS3 | Schizachyrium scoparium (Michx.) Nash var. stoloniferum (Nash) J. Wipff | creeping bluestem | Poaceae
|
| SCSCV | Schizachyrium scoparium (Michx.) Nash var. virile (Shinners) Gould | Schizachyrium scoparium var. divergens | Poaceae
|
| SCSC | Schizachyrium scoparium (Michx.) Nash | little bluestem | Poaceae
|
| SCSE7 | Schizachyrium semiberbe Nees | Schizachyrium sanguineum var. sanguineum | Poaceae
|
| SCSE3 | Schizachyrium sericatum (Swallen) Gould | Andropogon gracilis | Poaceae
|
| SCSP4 | Schizachyrium spadiceum (Swallen) J. Wipff | honey bluestem | Poaceae
|
| SCSTW | Schizachyrium stoloniferum Nash var. wolfei DeSelm | Schizachyrium scoparium var. stoloniferum | Poaceae
|
| SCST2 | Schizachyrium stoloniferum Nash | Schizachyrium scoparium var. stoloniferum | Poaceae
|
| SCTE5 | Schizachyrium tenerum Nees | slender little bluestem | Poaceae
|
| SCHIZ4 | Schizachyrium Nees | little bluestem | Poaceae
|
| SCEL3 | Schizaea elegans auct. non (Vahl) Sw. | Schizaea fluminensis | Schizaeaceae
|
| SCFL5 | Schizaea fluminensis Miers ex Sturm | Caribbean curlygrass fern | Schizaeaceae
|
| SCGE3 | Schizaea germanii (F�e) Prantl | Actinostachys pennula | Schizaeaceae
|
| SCPE7 | Schizaea pennula Sw. | Actinostachys pennula | Schizaeaceae
|
| SCPO | Schizaea poeppigiana Sturm | epiphytic curlygrass fern | Schizaeaceae
|
| SCPU2 | Schizaea pusilla Pursh | little curlygrass fern | Schizaeaceae
|
| SCRO2 | Schizaea robusta Baker | robust curlygrass fern | Schizaeaceae
|
| SCHIZ2 | Schizaea Sm. | curlygrass fern | Schizaeaceae
|
| SCPI | Schizanthus pinnatus Ruiz & Pav�n | poorman's orchid | Solanaceae
|
| SCHIZ7 | Schizanthus Ruiz & Pav�n | schizanthus | Solanaceae
|
| SCSE8 | Schizococcus sensitivus (Jepson) Eastw. | Arctostaphylos nummularia | Ericaceae
|
| SCPA23 | Schizolobium parahybum (Vell.) Blake | Brazilian firetree | Fabaceae
|
| SCHIZ9 | Schizolobium Vogel | Brazilian firetree | Fabaceae
|
| SCPA17 | Schizomitrium pallidum (Hornsch.) Crum & Anderson | Callicostella pallida | Callicostaceae
|
| SCSO | Schizonotus sorbifolius (L.) Lindl. | Sorbaria sorbifolia | Rosaceae
|
| SCCA15 | Schizopelte californica Th. Fr. | | Roccellaceae
|
| SCHIZ8 | Schizopelte Th. Fr. | schizopelte | Roccellaceae
|
| SCGL | Schizostachyum glaucifolium (Rupr.) Munro | Polynesian 'ohe | Poaceae
|
| SCHIZ5 | Schizostachyum Nees | Polynesian 'ohe | Poaceae
|
| SCLY3 | Schizostege lydgatei (Baker) Hbd. | Pteris lydgatei | Pteridaceae
|
| SCCO24 | Schizostylis coccinea Backh. & Harv. | Kaffir-lily | Iridaceae
|
| SCHIZ10 | Schizostylis Backh. & Harv. | Kaffir lily | Iridaceae
|
| SCANW | Schkuhria anthemoidea (DC.) Coult. var. wrightii (Gray) Heiser | Wright's false threadleaf | Asteraceae
|
| SCAN | Schkuhria anthemoidea (DC.) Coult. | Wright's false threadleaf | Asteraceae
|
| SCMU6 | Schkuhria multiflora Hook. & Arn. | manyflower false threadleaf | Asteraceae
|
| SCPIP | Schkuhria pinnata (Lam.) Kuntze ex Thell. var. pinnata | pinnate false threadleaf | Asteraceae
|
| SCPIW | Schkuhria pinnata (Lam.) Kuntze ex Thell. var. wislizeni (Gray) B.L. Turner | Wislizenus' false threadleaf | Asteraceae
|
| SCPI3 | Schkuhria pinnata (Lam.) Kuntze ex Thell. | pinnate false threadleaf | Asteraceae
|
| SCWIF | Schkuhria wislizeni Gray var. frustrata Blake | Schkuhria pinnata var. wislizeni | Asteraceae
|
| SCWIW | Schkuhria wislizeni Gray var. wrightii (Gray) Blake | Schkuhria anthemoidea var. wrightii | Asteraceae
|