| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| MESCR | Menodora scabra Gray var. ramosissima Steyermark | Menodora scabra | Oleaceae
|
| MESC | Menodora scabra Gray | rough menodora | Oleaceae
|
| MESC2 | Menodora scoparia Engelm. ex Gray | Menodora scabra | Oleaceae
|
| MESPM | Menodora spinescens Gray var. mohavensis Steyermark | Menodora spinescens | Oleaceae
|
| MESP2 | Menodora spinescens Gray | spiny menodora | Oleaceae
|
| MENOD | Menodora Bonpl. | menodora | Oleaceae
|
| MEAL4 | Mentha alopecuroides Hull | Mentha villosa | Lamiaceae
|
| MEAQC | Mentha aquatica L. var. crispa (L.) Benth. | Mentha piperita | Lamiaceae
|
| MEAQ | Mentha aquatica L. | water mint | Lamiaceae
|
| MEARB | Mentha arvensis L. ssp. borealis (Michx.) Taylor & MacBryde | Mentha arvensis | Lamiaceae
|
| MEARH | Mentha arvensis L. ssp. haplocalyx Briq. | Mentha arvensis | Lamiaceae
|
| MEARC | Mentha arvensis L. var. canadensis (L.) Kuntze | Mentha arvensis | Lamiaceae
|
| MEARG | Mentha arvensis L. var. glabrata (Benth.) Fern. | Mentha arvensis | Lamiaceae
|
| MEARL2 | Mentha arvensis L. var. lanata Piper | Mentha arvensis | Lamiaceae
|
| MEARS3 | Mentha arvensis L. var. sativa auct. non Benth. | Mentha arvensis | Lamiaceae
|
| MEARV | Mentha arvensis L. var. villosa (Benth.) S.R. Stewart | Mentha arvensis | Lamiaceae
|
| MEAR4 | Mentha arvensis L. | wild mint | Lamiaceae
|
| MECA7 | Mentha canadensis L. | Mentha arvensis | Lamiaceae
|
| MECA4 | Mentha cardiaca (S.F. Gray) Gerarde ex Baker | Mentha gracilis | Lamiaceae
|
| MECI2 | Mentha citrata Ehrh. | Mentha aquatica | Lamiaceae
|
| MECO7 | Mentha cordifolia auct. | Mentha spicata | Lamiaceae
|
| MECR6 | Mentha crispa L. | Mentha piperita | Lamiaceae
|
| MEDU | Mentha dumetorum Schultes | Mentha piperita | Lamiaceae
|
| MEGEC | Mentha �gentilis L. var. cardiaca (Gerarde ex Baker) Boivin (pro nm.) | Mentha gracilis | Lamiaceae
|
| MEGE2 | Mentha gentilis L. | Mentha arvensis | Lamiaceae
|
| MEGE6 | Mentha gentilis auct. non L. | Mentha gracilis | Lamiaceae
|
| MEGL | Mentha glabrior (Hook.) Rydb. | Mentha arvensis | Lamiaceae
|
| MEGR2 | Mentha �gracilis Sole (pro sp.) | gingermint | Lamiaceae
|
| MELO8 | Mentha longifolia auct. non (L.) Huds. | Mentha spicata | Lamiaceae
|
| MEMU6 | Mentha �muelleriana auct. non F.W. Schultz | Mentha gracilis | Lamiaceae
|
| MENE2 | Mentha nemorosa Willd. | Mentha villosa | Lamiaceae
|
| MEPE8 | Mentha penardii (Briq.) Rydb. | Mentha arvensis | Lamiaceae
|
| MEPIC | Mentha �piperi L. var. citrata (Ehrh.) Boivin (pro nm.) | Mentha aquatica | Lamiaceae
|
| MEPIC2 | Mentha piperita L. ssp. citrata (Ehrh.) Briq. | Mentha aquatica | Lamiaceae
|
| MEPI | Mentha �piperita L. (pro sp.) | peppermint | Lamiaceae
|
| MEPU | Mentha pulegium L. | pennyroyal | Lamiaceae
|
| MERE7 | Mentha requienii Benth. | mint | Lamiaceae
|
| MERO2 | Mentha �rotundifolia (L.) Huds. (pro sp.) | | Lamiaceae
|
| MERO | Mentha rotundifolia auct. non (L.) Huds. | Mentha suaveolens | Lamiaceae
|
| MESA6 | Mentha sativa L. | Mentha verticillata | Lamiaceae
|
| MESP3 | Mentha spicata L. | spearmint | Lamiaceae
|
| MESU5 | Mentha suaveolens Ehrh. | apple mint | Lamiaceae
|
| MEVEP | Mentha �verticillata L. var. peduncularis (Boreau) Rouy (pro nm.) | Mentha verticillata | Lamiaceae
|
| MEVE2 | Mentha ?�verticillata L. | | Lamiaceae
|
| MEVIA | Mentha �villosa Huds. var. alopecuroides (Hull) Briq. (pro nm.) | Mentha villosa | Lamiaceae
|
| MEVI6 | Mentha �villosa Huds. (pro sp.) | | Lamiaceae
|
| MEVI7 | Mentha viridis L. | Mentha spicata | Lamiaceae
|
| MENTH | Mentha L. | mint | Lamiaceae
|
| MEAF2 | Mentzelia affinis Greene | yellowcomet | Loasaceae
|
| MEAL5 | Mentzelia albescens (Gillies & Arn.) Griseb. | wavyleaf blazingstar | Loasaceae
|
| MEALC | Mentzelia albicaulis (Dougl. ex Hook.) Dougl. ex Torr. & Gray var. ctenophora (Rydb.) St. John | Mentzelia albicaulis | Loasaceae
|
| MEALG | Mentzelia albicaulis (Dougl. ex Hook.) Dougl. ex Torr. & Gray var. gracilis J. Darl. | Mentzelia albicaulis | Loasaceae
|
| MEALT | Mentzelia albicaulis (Dougl. ex Hook.) Dougl. ex Torr. & Gray var. tenerrima (Rydb.) St. John | Mentzelia albicaulis | Loasaceae
|
| MEALV | Mentzelia albicaulis (Dougl. ex Hook.) Dougl. ex Torr. & Gray var. veatchiana (Kellogg) Urban & Gilg | Mentzelia veatchiana | Loasaceae
|
| MEAL6 | Mentzelia albicaulis (Dougl. ex Hook.) Dougl. ex Torr. & Gray | whitestem blazingstar | Loasaceae
|
| MEAR5 | Mentzelia argillosa J. Darl. | Arapien blazingstar | Loasaceae
|
| MEAS | Mentzelia aspera L. | tropical blazingstar | Loasaceae
|
| MEAS2 | Mentzelia asperula Woot. & Standl. | Organ Mountain blazingstar | Loasaceae
|
| MEBR4 | Mentzelia brandegeei S. Wats. | Mentzelia laevicaulis var. parviflora | Loasaceae
|
| MECA5 | Mentzelia californica H.J. Thompson & Roberts | Mentzelia nitens var. nitens | Loasaceae
|
| MECA8 | Mentzelia candelariae H.J. Thompson & Prigge | Candelaria blazingstar | Loasaceae
|
| MECH | Mentzelia chrysantha Engelm. ex Brandeg. | gold blazingstar | Loasaceae
|
| MECO23 | Mentzelia collomiae C.M. Christy | | Loasaceae
|
| MECOD2 | Mentzelia congesta Nutt. ex Torr. & Gray var. davidsoniana (Abrams) J.F. Macbr. | Mentzelia congesta | Loasaceae
|
| MECO2 | Mentzelia congesta Nutt. ex Torr. & Gray | united blazingstar | Loasaceae
|
| MECR | Mentzelia crocea Kellogg | Sierra blazingstar | Loasaceae
|
| MECR4 | Mentzelia cronquistii H.J. Thompson & Prigge | Cronquist's blazingstar | Loasaceae
|
| MEDE2 | Mentzelia decapetala (Pursh ex Sims) Urban & Gilg ex Gilg | tenpetal blazingstar | Loasaceae
|
| MEDE3 | Mentzelia densa Greene | Royal Gorge blazingstar | Loasaceae
|
| MEDE5 | Mentzelia desertorum (A. Davids.) H.J. Thompson & Roberts | desert blazingstar | Loasaceae
|
| MEDIC2 | Mentzelia dispersa S. Wats. var. compacta (A. Nels.) J.F. Macbr. | Nevada blazingstar | Loasaceae
|
| MEDID | Mentzelia dispersa S. Wats. var. dispersa | bushy blazingstar | Loasaceae
|
| MEDIL | Mentzelia dispersa S. Wats. var. latifolia (Rydb.) J.F. Macbr. | bushy blazingstar | Loasaceae
|
| MEDIO | Mentzelia dispersa S. Wats. var. obtusa Jepson | Nevada blazingstar | Loasaceae
|
| MEDI | Mentzelia dispersa S. Wats. | bushy blazingstar | Loasaceae
|
| MEDO | Mentzelia douglasii St. John | Mentzelia laevicaulis var. parviflora | Loasaceae
|
| MEER2 | Mentzelia eremophila (Jepson) H.J. Thompson & Roberts | pinyon blazingstar | Loasaceae
|
| MEFL | Mentzelia floridana Nutt. ex Torr. & Gray | poorman's patch | Loasaceae
|
| MEGO | Mentzelia goodrichii Thorne & Welsh | Goodrich's blazingstar | Loasaceae
|
| MEGRP | Mentzelia gracilenta (Nutt.) Torr. & Gray var. pectinata (Kellogg) Jepson | Mentzelia pectinata | Loasaceae
|
| MEGRV | Mentzelia gracilenta (Nutt.) Torr. & Gray var. veatchiana (Kellogg) Urban & Gilg | Mentzelia veatchiana | Loasaceae
|
| MEGR | Mentzelia gracilenta (Nutt.) Torr. & Gray | grass blazingstar | Loasaceae
|
| MEGR3 | Mentzelia gracilis H.J. Thompson & Lewis non Urban & Gilg | Mentzelia albicaulis | Loasaceae
|
| MEHIS | Mentzelia hirsutissima S. Wats. var. stenophylla (Urban & Gilg) I.M. Johnston | Mentzelia hirsutissima | Loasaceae
|
| MEHI3 | Mentzelia hirsutissima S. Wats. | hairy blazingstar | Loasaceae
|
| MEHU | Mentzelia humilis (Gray) J. Darl. | gypsum blazingstar | Loasaceae
|
| MEIN6 | Mentzelia incisa Urban & Gilg | streambank blazingstar | Loasaceae
|
| MEIN12 | Mentzelia integra (M.E. Jones) Tidestrom | Mentzelia multiflora var. integra | Loasaceae
|
| MEINI | Mentzelia involucrata S. Wats. var. involucrata | whitebract blazingstar | Loasaceae
|
| MEINM | Mentzelia involucrata S. Wats. var. megalantha I.M. Johnston | whitebract blazingstar | Loasaceae
|
| MEIN5 | Mentzelia involucrata S. Wats. | whitebract blazingstar | Loasaceae
|
| MEIN15 | Mentzelia inyoensis Prigge | Inyo blazingstar | Loasaceae
|
| MEIS | Mentzelia isolata H.C. Gentry | isolated blazingstar | Loasaceae
|
| MEJO | Mentzelia jonesii (Urban & Gilg) H.J. Thompson & Roberts | Jones' blazingstar | Loasaceae
|
| MELA | Mentzelia laciniata (Rydb.) J. Darl. | cutleaf blazingstar | Loasaceae
|
| MELAA | Mentzelia laevicaulis (Dougl. ex Hook.) Torr. & Gray var. acuminata (Rydb.) A. Nels. & J.F. Macbr. | Mentzelia laevicaulis var. laevicaulis | Loasaceae
|
| MELAL3 | Mentzelia laevicaulis (Dougl. ex Hook.) Torr. & Gray var. laevicaulis | smoothstem blazingstar | Loasaceae
|
| MELAP | Mentzelia laevicaulis (Dougl. ex Hook.) Torr. & Gray var. parviflora (Dougl. ex Hook.) C.L. Hitchc. | smoothstem blazingstar | Loasaceae
|
| MELA2 | Mentzelia laevicaulis (Dougl. ex Hook.) Torr. & Gray | smoothstem blazingstar | Loasaceae
|
| MELE3 | Mentzelia leucophylla Brandeg. | Ash Meadows blazingstar | Loasaceae
|
| MELI3 | Mentzelia lindheimeri Urban & Gilg | Lindheimer's blazingstar | Loasaceae
|