| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| MIMI19 | Microthelia micula auct. | Kirschsteiniothelia aethiops | Pleosporaceae
|
| MIOB3 | Microthelia oblongula Mull. Arg. | Mycomicrothelia wallrothii | Arthopyreniaceae
|
| MIOX2 | Microthelia oxyspora Zahlbr. | Melanomma oxysporum | Melanommataceae
|
| MIWA4 | Microthelia wallrothii (Hepp) Rehm | Mycomicrothelia wallrothii | Arthopyreniaceae
|
| MIWI | Microthelia willeyana Mull. Arg. | Mycomicrothelia willeyana | Arthopyreniaceae
|
| MIPE8 | Microthlaspi perfoliatum (L.) F.K. Mey. | claspleaf pennycress | Brassicaceae
|
| MICRO18 | Microthlaspi F.K. Mey. | pennycress | Brassicaceae
|
| MIEL5 | Mielichhoferia elongata (Hoppe & Hornsch. ex Hook.) Nees & Hornsch in Nees et al. | Mielichhoferia mielichhoferiana var. elongata | Bryaceae
|
| MIMAP | Mielichhoferia macrocarpa (Hook. in Drumm.) Bruch & Schimp. ex Jaeg. var. pungens Bartr. | Mielichhoferia macrocarpa | Bryaceae
|
| MIMA10 | Mielichhoferia macrocarpa (Hook. in Drumm.) Bruch & Schimp. ex Jaeg. | waterfall copper moss | Bryaceae
|
| MIMIE | Mielichhoferia mielichhoferiana (Funck in Hook.) Loeske var. elongata (Hoppe & Hornsch. ex Hook.) Wijk & Marg. | Mielichhofer's copper moss | Bryaceae
|
| MIMIM2 | Mielichhoferia mielichhoferiana (Funck in Hook.) Loeske var. mielichhoferiana | Mielichhofer's copper moss | Bryaceae
|
| MIMI21 | Mielichhoferia mielichhoferiana (Funck in Hook.) Loeske | Mielichhof's copper moss | Bryaceae
|
| MINI6 | Mielichhoferia nitida Nees & Hornsch in Nees et al. | Mielichhoferia mielichhoferiana var. mielichhoferiana | Bryaceae
|
| MITE11 | Mielichhoferia tehamensis Showers | Tehama copper moss | Bryaceae
|
| MIELI | Mielichhoferia Nees & Hornsch. in Nees et al. | copper moss | Bryaceae
|
| MIAN6 | Mikania angulosa Raf. | Mikania scandens | Asteraceae
|
| MIBA5 | Mikania batatifolia auct. non DC. | Mikania scandens | Asteraceae
|
| MICO8 | Mikania congesta DC. | guaco | Asteraceae
|
| MICO16 | Mikania cordata (Burm. f.) B.L. Robins. | heartleaf hempvine | Asteraceae
|
| MICO9 | Mikania cordifolia (L. f.) Willd. | Florida Keys hempvine | Asteraceae
|
| MIFR4 | Mikania fragilis Urban | fragile hempvine | Asteraceae
|
| MIMI5 | Mikania micrantha Kunth | bittervine | Asteraceae
|
| MIOD | Mikania odoratissima Urban | fragrant hempvine | Asteraceae
|
| MIPA9 | Mikania pachyphylla Urban | Luquillo Mountain hempvine | Asteraceae
|
| MIPO3 | Mikania porosa Urban | Puerto Rico hempvine | Asteraceae
|
| MISCP | Mikania scandens (L.) Willd. var. pubescens (Nutt.) Torr. & Gray | Mikania scandens | Asteraceae
|
| MISC | Mikania scandens (L.) Willd. | climbing hempvine | Asteraceae
|
| MIST6 | Mikania stevensiana Britt. | Maricao River hempvine | Asteraceae
|
| MIKAN | Mikania Willd. | hempvine | Asteraceae
|
| MICO14 | Milium compressum Sw. | Axonopus compressus | Poaceae
|
| MIEFC | Milium effusum L. var. cisatlanticum Fern. | American milletgrass | Poaceae
|
| MIEF | Milium effusum L. | American milletgrass | Poaceae
|
| MIPA17 | Milium paniceum Sw. | Digitaria panicea | Poaceae
|
| MIPU15 | Milium punctatum L. | Eriochloa punctata | Poaceae
|
| MIVE3 | Milium vernale Bieb. | spring milletgrass | Poaceae
|
| MILIU | Milium L. | milletgrass | Poaceae
|
| MIBI2 | Milla biflora Cav. | Mexican star | Liliaceae
|
| MIUN5 | Milla uniflora Graham | Tristagma uniflorum | Liliaceae
|
| MILLA | Milla Cav. | milla | Liliaceae
|
| MIRA3 | Millegrana radiola (L.) Druce | Radiola linoides | Linaceae
|
| MIGL9 | Miltitzia glandulifera (Torr. ex S. Wats.) Heller | Phacelia adenophora | Hydrophyllaceae
|
| MIIN8 | Miltitzia inyoensis J.F. Macbr. | Phacelia inyoensis | Hydrophyllaceae
|
| MILU2 | Miltitzia lutea (Hook. & Arn.) A. DC. | Phacelia lutea var. lutea | Hydrophyllaceae
|
| MIPA10 | Miltitzia parviflora (Gray ex Newberry) Brand | Phacelia inundata | Hydrophyllaceae
|
| MIPU14 | Miltitzia pusilla (Gray) Brand | Phacelia tetramera | Hydrophyllaceae
|
| MISC3 | Miltitzia scopulina (A. Nels.) Rydb. | Phacelia scopulina var. scopulina | Hydrophyllaceae
|
| MIVE6 | Miltonia vexillaria (Rchb. f.) G. Nicholson | | Orchidaceae
|
| MILTO | Miltonia Lindl. | pansy orchid | Orchidaceae
|
| MIPI5 | Mimetanthe pilosa (Benth.) Greene | false monkeyflower | Scrophulariaceae
|
| MIMET | Mimetanthe Greene | mimetanthe | Scrophulariaceae
|
| MIACB | Mimosa aculeaticarpa Ortega var. biuncifera (Benth.) Barneby | catclaw mimosa | Fabaceae
|
| MIAC3 | Mimosa aculeaticarpa Ortega | catclaw mimosa | Fabaceae
|
| MIAR4 | Mimosa arenosa (Willd.) Poir. | elegant mimosa | Fabaceae
|
| MIAS3 | Mimosa asperata L. | Puerto Rico sensitive-briar | Fabaceae
|
| MIBIG | Mimosa biuncifera Benth. var. glabrescens Gray | Mimosa aculeaticarpa var. biuncifera | Fabaceae
|
| MIBIL | Mimosa biuncifera Benth. var. lindheimeri (Gray) B.L. Robins. | Mimosa aculeaticarpa var. biuncifera | Fabaceae
|
| MIBIL2 | Mimosa biuncifera Benth. var. lindheimeri auct. non (Gray) B.L. Robins. | Mimosa texana | Fabaceae
|
| MIBI3 | Mimosa biuncifera Benth. | Mimosa aculeaticarpa var. biuncifera | Fabaceae
|
| MIBOT | Mimosa borealis Gray var. texana Gray | Mimosa texana | Fabaceae
|
| MIBO2 | Mimosa borealis Gray | fragrant mimosa | Fabaceae
|
| MICA9 | Mimosa casta L. | graceful mimosa | Fabaceae
|
| MICE | Mimosa ceratonia L. | black ambret | Fabaceae
|
| MICY | Mimosa cyclocarpa Jacq. | Enterolobium cyclocarpum | Fabaceae
|
| MIDI8 | Mimosa diplotricha C. Wright ex Sauvalle | giant false sensitive plant | Fabaceae
|
| MIDYW | Mimosa dysocarpa Benth. var. wrightii (Gray) Kearney & Peebles | Mimosa dysocarpa | Fabaceae
|
| MIDY | Mimosa dysocarpa Benth. | velvetpod mimosa | Fabaceae
|
| MIEB | Mimosa ebano Berl. | Ebenopsis ebano | Fabaceae
|
| MIEM | Mimosa emoryana Benth. | Emory's mimosa | Fabaceae
|
| MIFA | Mimosa farnesiana L. | Acacia farnesiana | Fabaceae
|
| MIGRL | Mimosa grahamii Gray var. lemmonii (Gray) Kearney & Peebles | Mimosa grahamii | Fabaceae
|
| MIGR2 | Mimosa grahamii Gray | Graham's mimosa | Fabaceae
|
| MIHY2 | Mimosa hystricina (Small ex Britt. & Rose) B.L. Turner | | Fabaceae
|
| MIIL | Mimosa illinoensis Michx. | Desmanthus illinoensis | Fabaceae
|
| MIIN7 | Mimosa ingoides L.C. Rich. | Inga ingoides | Fabaceae
|
| MIIN80 | Mimosa invisa Mart., non Mart. ex Colla | Mimosa diplotricha | Fabaceae
|
| MILA15 | Mimosa latidens (Small) B.L. Turner | Kairn's sensitive-briar | Fabaceae
|
| MILA2 | Mimosa laxiflora Benth. | Arizona mimosa | Fabaceae
|
| MILE6 | Mimosa lebbeck L. | Albizia lebbeck | Fabaceae
|
| MILE7 | Mimosa leucocephala Lam. | Leucaena leucocephala | Fabaceae
|
| MILI6 | Mimosa lindheimeri Gray | Mimosa aculeaticarpa var. biuncifera | Fabaceae
|
| MIMA | Mimosa malacophylla Gray | softleaf mimosa | Fabaceae
|
| MIMI22 | Mimosa microphylla Dry. | littleleaf sensitive-briar | Fabaceae
|
| MIMU4 | Mimosa muricata L. | Acacia muricata | Fabaceae
|
| MINI2 | Mimosa nilotica L. | Acacia nilotica | Fabaceae
|
| MINU6 | Mimosa nuttallii (DC.) B.L. Turner | Nuttall's sensitive-briar | Fabaceae
|
| MIOC2 | Mimosa occidentalis (Woot. & Standl.) B. L. Turner | Mimosa rupertiana | Fabaceae
|
| MIPE2 | Mimosa pellita Kunth ex Willd. | lollipop mimosa | Fabaceae
|
| MIPIB | Mimosa pigra L. var. berlandieri (Gray) B.L. Turner | Mimosa asperata | Fabaceae
|
| MIPI | Mimosa pigra L. | black mimosa | Fabaceae
|
| MIPL3 | Mimosa plena L. | Neptunia plena | Fabaceae
|
| MIPO5 | Mimosa portoricensis Jacq. | Zapoteca portoricensis | Fabaceae
|
| MIPR4 | Mimosa procera Roxb. | Albizia procera | Fabaceae
|
| MIPUP2 | Mimosa pudica L. var. pudica | shameplant | Fabaceae
|
| MIPUU | Mimosa pudica L. var. unijuga (Duchass. & Walp.) Griseb. | shameplant | Fabaceae
|
| MIPU8 | Mimosa pudica L. | shameplant | Fabaceae
|
| MIQUA | Mimosa quadrivalvis L. var. angustata (Torr. & Gray) Barneby | Mimosa microphylla | Fabaceae
|
| MIQUF | Mimosa quadrivalvis L. var. floridana (Chapman) Barneby | Florida mimosa | Fabaceae
|
| MIQUH2 | Mimosa quadrivalvis L. var. hystricina (Small ex Britt. & Rose) Barneby | Mimosa hystricina | Fabaceae
|
| MIQUL | Mimosa quadrivalvis L. var. latidens (Small) Barneby | Mimosa latidens | Fabaceae
|
| MIQUL2 | Mimosa quadrivalvis L. var. ?leptocarpa (DC.) Barneby | fourvalve mimosa | Fabaceae
|