| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| SPCL3 | Spergularia clevelandii (Greene) B.L. Robins. | Spergularia villosa | Caryophyllaceae
|
| SPDI | Spergularia diandra (Guss.) Held. & Sart. | diandra sandspurry | Caryophyllaceae
|
| SPEC | Spergularia echinosperma (Celak.) Aschers. & Graebn. | bristleseed sandspurry | Caryophyllaceae
|
| SPLE3 | Spergularia leiosperma (Kindb.) F. Schmidt | Spergularia salina | Caryophyllaceae
|
| SPMAL | Spergularia macrotheca (Hornem.) Heynh. var. leucantha (Greene) B.L. Robins. | sticky sandspurry | Caryophyllaceae
|
| SPMAL2 | Spergularia macrotheca (Hornem.) Heynh. var. longistyla R.P. Rossb. | sticky sandspurry | Caryophyllaceae
|
| SPMAM | Spergularia macrotheca (Hornem.) Heynh. var. macrotheca | sticky sandspurry | Caryophyllaceae
|
| SPMA | Spergularia macrotheca (Hornem.) Heynh. | sticky sandspurry | Caryophyllaceae
|
| SPMA9 | Spergularia marginata (DC.) Kittel | Spergularia maritima | Caryophyllaceae
|
| SPMAL3 | Spergularia marina (L.) Griseb. var. leiosperma (Kindb.) Guerke | Spergularia salina | Caryophyllaceae
|
| SPMAS | Spergularia marina (L.) Griseb. var. simonii O.& I. Deg. | Spergularia salina | Caryophyllaceae
|
| SPMAT | Spergularia marina (L.) Griseb. var. tenuis (Greene) R.P. Rossb. | Spergularia salina | Caryophyllaceae
|
| SPMA2 | Spergularia marina (L.) Griseb. | Spergularia salina | Caryophyllaceae
|
| SPMA10 | Spergularia maritima (All.) Chiov. | media sandspurry | Caryophyllaceae
|
| SPME | Spergularia media (L.) K. Presl ex Griseb. | Spergularia maritima | Caryophyllaceae
|
| SPPL2 | Spergularia platensis (Camb.) Fenzl | La Plata sandspurry | Caryophyllaceae
|
| SPPU8 | Spergularia purpurea (Pers.) G. Don f. | | Caryophyllaceae
|
| SPRUP | Spergularia rubra (L.) J.& K. Presl var. perennans (Kindb.) B.L. Robins. | Spergularia rubra | Caryophyllaceae
|
| SPRU | Spergularia rubra (L.) J.& K. Presl | red sandspurry | Caryophyllaceae
|
| SPSAT | Spergularia salina J.& K. Presl var. tenuis (Greene) Jepson | Spergularia salina | Caryophyllaceae
|
| SPSA5 | Spergularia salina J.& K. Presl | salt sandspurry | Caryophyllaceae
|
| SPSAB | Spergularia salsuginea (Bunge) Fenzl var. bracteata B.L. Robins. | Spergularia echinosperma | Caryophyllaceae
|
| SPSA | Spergularia salsuginea (Bunge) Fenzl | Spergularia diandra | Caryophyllaceae
|
| SPSP5 | Spergularia sparsiflora (Greene) A. Nels. | Spergularia salina | Caryophyllaceae
|
| SPTEI | Spergularia tenuis (Greene) B.L. Robins. var. involucrata B.L. Robins. | Spergularia salina | Caryophyllaceae
|
| SPVI | Spergularia villosa (Pers.) Camb. | hairy sandspurry | Caryophyllaceae
|
| SPERG2 | Spergularia (Pers.) J.& K. Presl | sandspurry | Caryophyllaceae
|
| SPLA9 | Spergulastrum lanceolatum Michx. | Stellaria borealis ssp. borealis | Caryophyllaceae
|
| SPLAS2 | Spergulastrum lanuginosum Michx. ssp. saxosum (Gray) W.A. Weber | Arenaria lanuginosa ssp. saxosa | Caryophyllaceae
|
| SPLA8 | Spergulastrum lanuginosum Michx. | Arenaria lanuginosa ssp. lanuginosa var. lanuginosa | Caryophyllaceae
|
| SPAL3 | Spermacoce alata Aubl. | winged false buttonweed | Rubiaceae
|
| SPAS2 | Spermacoce assurgens Ruiz & Pav�n | woodland false buttonweed | Rubiaceae
|
| SPCA18 | Spermacoce capitata Ruiz & Pav�n | baldhead false buttonweed | Rubiaceae
|
| SPCO7 | Spermacoce confusa Rendle | river false buttonweed | Rubiaceae
|
| SPDE3 | Spermacoce densiflora (DC.) Alain | bouquet false buttonweed | Rubiaceae
|
| SPER4 | Spermacoce eryngioides (Cham. & Schlecht.) Kuntze | | Rubiaceae
|
| SPEX | Spermacoce exilis (L.O. Williams) C. Adams | Pacific false buttonweed | Rubiaceae
|
| SPFL4 | Spermacoce floridana Urban | Florida false buttonweed | Rubiaceae
|
| SPGL2 | Spermacoce glabra Michx. | smooth false buttonweed | Rubiaceae
|
| SPHI | Spermacoce hirta L. | Mitracarpus hirtus | Rubiaceae
|
| SPKE | Spermacoce keyensis Small | Spermacoce floridana | Rubiaceae
|
| SPLA11 | Spermacoce latifolia Aubl. | oval-leaf false buttonweed | Rubiaceae
|
| SPMA7 | Spermacoce mauritiana auct. non Gideon | Spermacoce exilis | Rubiaceae
|
| SPOC3 | Spermacoce ocymoides auct. non Burm. f. | Spermacoce prostrata | Rubiaceae
|
| SPOV3 | Spermacoce ovalifolia (Mart. & Gal.) Hemsl. | broadleaf false buttonweed | Rubiaceae
|
| SPPR4 | Spermacoce prostrata Aubl. | prostrate false buttonweed | Rubiaceae
|
| SPRE3 | Spermacoce repens auct. non (DC.) Sess� & Moc. | Spermacoce prostrata | Rubiaceae
|
| SPRI3 | Spermacoce riparia Cham. & Schlecht. | Spermacoce tenuior | Rubiaceae
|
| SPRI2 | Spermacoce riparia auct. non Cham. & Schlecht. | Spermacoce confusa | Rubiaceae
|
| SPSE2 | Spermacoce serrulata Beauv. | Diodia serrulata | Rubiaceae
|
| SPSI4 | Spermacoce sintenisii (Urban) Alain | West Indian false buttonweed | Rubiaceae
|
| SPSU5 | Spermacoce suffrutescens Jacq. | Spermacoce assurgens | Rubiaceae
|
| SPTEF | Spermacoce tenuior L. var. floridana (Urban) R.W. Long | Spermacoce floridana | Rubiaceae
|
| SPTE | Spermacoce tenuior L. | slender false buttonweed | Rubiaceae
|
| SPTE9 | Spermacoce tenuior auct. non L. | Spermacoce confusa | Rubiaceae
|
| SPTE8 | Spermacoce terminalis (Small) Kartesz & Gandhi | Everglade Eey false buttonweed | Rubiaceae
|
| SPTE6 | Spermacoce tetraquetra A. Rich. | pineland false buttonweed | Rubiaceae
|
| SPVE2 | Spermacoce verticillata L. | shrubby false buttonweed | Rubiaceae
|
| SPERM | Spermacoce L. | false buttonweed | Rubiaceae
|
| SPDI2 | Spermolepis divaricata (Walt.) Raf. ex Ser. | roughfruit scaleseed | Apiaceae
|
| SPEC2 | Spermolepis echinata (Nutt. ex DC.) Heller | bristly scaleseed | Apiaceae
|
| SPHA2 | Spermolepis hawaiiensis H. Wolff | Hawai'i scaleseed | Apiaceae
|
| SPIN | Spermolepis inermis (Nutt. ex DC.) Mathias & Constance | Red River scaleseed | Apiaceae
|
| SPPA8 | Spermolepis patens (Nutt. ex DC.) B.L. Robins. | Spermolepis inermis | Apiaceae
|
| SPERM2 | Spermolepis Raf. | scaleseed | Apiaceae
|
| SPAMA | Sphaeralcea ambigua Gray ssp. ambigua | apricot globemallow | Malvaceae
|
| SPAMM | Sphaeralcea ambigua Gray ssp. monticola Kearney | desert globemallow | Malvaceae
|
| SPAMR | Sphaeralcea ambigua Gray ssp. rosacea (Munz & Johnston) Kearney | rose globemallow | Malvaceae
|
| SPAMR2 | Sphaeralcea ambigua Gray ssp. rugosa Kearney | desert globemallow | Malvaceae
|
| SPAMA2 | Sphaeralcea ambigua Gray var. aculeata Jepson | Sphaeralcea ambigua ssp. monticola | Malvaceae
|
| SPAMR4 | Sphaeralcea ambigua Gray var. rosacea (Munz & Johnston) Kearney | Sphaeralcea ambigua ssp. rosacea | Malvaceae
|
| SPAMR5 | Sphaeralcea ambigua Gray var. rugosa (Kearney) Kearney | Sphaeralcea ambigua ssp. rugosa | Malvaceae
|
| SPAM2 | Sphaeralcea ambigua Gray | desert globemallow | Malvaceae
|
| SPAN7 | Sphaeralcea angusta (Gray) Fern. | Malvastrum hispidum | Malvaceae
|
| SPANC | Sphaeralcea angustifolia (Cav.) G. Don ssp. cuspidata (Gray) Kearney | Sphaeralcea angustifolia | Malvaceae
|
| SPANL | Sphaeralcea angustifolia (Cav.) G. Don ssp. lobata (Woot.) Kearney | Sphaeralcea angustifolia | Malvaceae
|
| SPANC2 | Sphaeralcea angustifolia (Cav.) G. Don var. cuspidata Gray | Sphaeralcea angustifolia | Malvaceae
|
| SPANL2 | Sphaeralcea angustifolia (Cav.) G. Don var. lobata (Woot.) Kearney | Sphaeralcea angustifolia | Malvaceae
|
| SPANO | Sphaeralcea angustifolia (Cav.) G. Don var. oblongifolia (Gray) Shinners | Sphaeralcea angustifolia | Malvaceae
|
| SPAN3 | Sphaeralcea angustifolia (Cav.) G. Don | copper globemallow | Malvaceae
|
| SPCAC3 | Sphaeralcea caespitosa M. E. Jones var. caespitosa | Railroad Valley globemallow | Malvaceae
|
| SPCAW | Sphaeralcea caespitosa M. E. Jones var. williamsiae N. H. Holmgren | tufted globemallow | Malvaceae
|
| SPCA4 | Sphaeralcea caespitosa M.E. Jones | tufted globemallow | Malvaceae
|
| SPCOC | Sphaeralcea coccinea (Nutt.) Rydb. ssp. coccinea | scarlet globemallow | Malvaceae
|
| SPCOD | Sphaeralcea coccinea (Nutt.) Rydb. ssp. dissecta (Nutt. ex Torr. & Gray) Kearney | Sphaeralcea coccinea ssp. coccinea | Malvaceae
|
| SPCOE | Sphaeralcea coccinea (Nutt.) Rydb. ssp. elata (E.G. Baker) Kearney | scarlet globemallow | Malvaceae
|
| SPCOD2 | Sphaeralcea coccinea (Nutt.) Rydb. var. dissecta (Nutt. ex Torr. & Gray) Garrett | Sphaeralcea coccinea ssp. coccinea | Malvaceae
|
| SPCOE2 | Sphaeralcea coccinea (Nutt.) Rydb. var. elata (E.G. Baker) Kearney | Sphaeralcea coccinea ssp. elata | Malvaceae
|
| SPCO | Sphaeralcea coccinea (Nutt.) Rydb. | scarlet globemallow | Malvaceae
|
| SPCO2 | Sphaeralcea coulteri (S. Wats.) Gray | Coulter's globemallow | Malvaceae
|
| SPCU3 | Sphaeralcea cuspidata (Gray) Britt. | Sphaeralcea angustifolia | Malvaceae
|
| SPDID | Sphaeralcea digitata (Greene) Rydb. ssp. digitata | juniper globemallow | Malvaceae
|
| SPDIT | Sphaeralcea digitata (Greene) Rydb. ssp. tenuipes (Woot. & Standl.) Kearney | juniper globemallow | Malvaceae
|
| SPDIA | Sphaeralcea digitata (Greene) Rydb. var. angustiloba (Gray) Shinners | Sphaeralcea digitata ssp. tenuipes | Malvaceae
|
| SPDIT2 | Sphaeralcea digitata (Greene) Rydb. var. tenuipes (Woot. & Standl.) Kearney | Sphaeralcea digitata ssp. tenuipes | Malvaceae
|
| SPDI3 | Sphaeralcea digitata (Greene) Rydb. | juniper globemallow | Malvaceae
|
| SPEMA2 | Sphaeralcea emoryi Torr. ex Gray ssp. arida (Rose) Kearney | Sphaeralcea emoryi | Malvaceae
|
| SPEMN | Sphaeralcea emoryi Torr. ex Gray ssp. nevadensis Kearney | Sphaeralcea angustifolia | Malvaceae
|
| SPEMV | Sphaeralcea emoryi Torr. ex Gray ssp. variabilis (Cockerell) Kearney | Sphaeralcea emoryi | Malvaceae
|
| SPEMA3 | Sphaeralcea emoryi Torr. ex Gray var. arida (Rose) Kearney | Sphaeralcea emoryi | Malvaceae
|
| SPEMC | Sphaeralcea emoryi Torr. ex Gray var. californica (Parish) Shinners | Sphaeralcea emoryi | Malvaceae
|