| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| MAAR8 | Mammillaria arizonica Engelm. | Escobaria vivipara var. arizonica | Cactaceae
|
| MABE3 | Mammillaria bella (Britt. & Rose) Weniger | Escobaria emskoetteriana | Cactaceae
|
| MACO20 | Mammillaria conoidea DC. | Neolloydia conoidea | Cactaceae
|
| MADA3 | Mammillaria dasyacantha Engelm. | Escobaria dasyacantha var. dasyacantha | Cactaceae
|
| MADE2 | Mammillaria deserti Engelm. | Escobaria vivipara var. deserti | Cactaceae
|
| MADII | Mammillaria dioica K. Brandeg. var. incerta (Parish) Munz | Mammillaria dioica | Cactaceae
|
| MADI3 | Mammillaria dioica K. Brandeg. | strawberry cactus | Cactaceae
|
| MADU2 | Mammillaria duncanii (Hester) Weniger | Escobaria dasyacantha var. duncanii | Cactaceae
|
| MAEC | Mammillaria echinus Engelm. | Coryphantha echinus | Cactaceae
|
| MAFA6 | Mammillaria fasciculata Engelm. ex B.D. Jackson | Echinocereus fendleri var. fasciculatus | Cactaceae
|
| MAFI | Mammillaria fissurata Engelm. | Ariocarpus fissuratus | Cactaceae
|
| MAFR7 | Mammillaria fragrans (Hester) Weniger | Escobaria vivipara var. radiosa | Cactaceae
|
| MAGRG4 | Mammillaria grahamii Engelm. var. grahamii | Graham's nipple cactus | Cactaceae
|
| MAGRO | Mammillaria grahamii Engelm. var. oliviae (Orcutt) L. Benson | Graham's nipple cactus | Cactaceae
|
| MAGR9 | Mammillaria grahamii Engelm. | Graham's nipple cactus | Cactaceae
|
| MAGUA | Mammillaria gummifera Engelm. var. applanata (Engelm.) L. Benson | Mammillaria heyderi var. heyderi | Cactaceae
|
| MAGUH | Mammillaria gummifera Engelm. var. hemisphaerica (Engelm.) L. Benson | Mammillaria heyderi var. hemisphaerica | Cactaceae
|
| MAGUM | Mammillaria gummifera Engelm. var. macdougalii (Rose) L. Benson | Mammillaria heyderi var. macdougalii | Cactaceae
|
| MAGUM2 | Mammillaria gummifera Engelm. var. meiacantha (Engelm.) L. Benson | Mammillaria heyderi var. meiacantha | Cactaceae
|
| MAGU | Mammillaria gummifera Engelm. p.p. | Mammillaria heyderi var. macdougalii | Cactaceae
|
| MAHE5 | Mammillaria hesteri (Y. Wright) Weniger | Escobaria hesteri | Cactaceae
|
| MAHEA | Mammillaria heyderi Muehlenpfordt var. applanata Engelm. | Mammillaria heyderi var. heyderi | Cactaceae
|
| MAHEB | Mammillaria heyderi Muehlenpfordt var. bullingtoniana Castetter, Pierce & Schwerin | little nipple cactus | Cactaceae
|
| MAHEH | Mammillaria heyderi Muehlenpfordt var. hemisphaerica Engelm. | little nipple cactus | Cactaceae
|
| MAHEH2 | Mammillaria heyderi Muehlenpfordt var. heyderi | little nipple cactus | Cactaceae
|
| MAHEM | Mammillaria heyderi Muehlenpfordt var. macdougalii (Rose) L. Benson | Macdougal's nipple cactus | Cactaceae
|
| MAHEM2 | Mammillaria heyderi Muehlenpfordt var. meiacantha (Engelm.) L. Benson | little nipple cactus | Cactaceae
|
| MAHE2 | Mammillaria heyderi Muehlenpfordt | little nipple cactus | Cactaceae
|
| MALAD | Mammillaria lasiacantha Engelm. var. denudata Engelm. | Mammillaria lasiacantha | Cactaceae
|
| MALA2 | Mammillaria lasiacantha Engelm. | lacespine nipple cactus | Cactaceae
|
| MALE4 | Mammillaria leei (Rose ex B�decker) Weniger | Escobaria sneedii var. leei | Cactaceae
|
| MALOS | Mammillaria longimamma DC. var. sphaerica (A. Dietr.) K. Brandeg. | Mammillaria sphaerica | Cactaceae
|
| MAMA17 | Mammillaria macdougalii Rose | Mammillaria heyderi var. macdougalii | Cactaceae
|
| MAMA16 | Mammillaria macromeris Engelm. | Coryphantha macromeris var. macromeris | Cactaceae
|
| MAMA6 | Mammillaria mainiae K. Brandeg. | counterclockwise nipple cactus | Cactaceae
|
| MAMA38 | Mammillaria matudae Bravo | | Cactaceae
|
| MAME6 | Mammillaria meiacantha Engelm. | Mammillaria heyderi var. meiacantha | Cactaceae
|
| MAME8 | Mammillaria meridiorosei Castetter, Pierce & Schwerin | Mammillaria wrightii var. wilcoxii | Cactaceae
|
| MAMIA | Mammillaria microcarpa Engelm. var. auricarpa W.T. Marsh. | Mammillaria grahamii var. grahamii | Cactaceae
|
| MAMI2 | Mammillaria microcarpa Engelm. | Mammillaria grahamii var. grahamii | Cactaceae
|
| MAMI5 | Mammillaria micromeris Engelm. | Epithelantha micromeris var. micromeris | Cactaceae
|
| MAMI6 | Mammillaria milleri (Britt. & Rose) B�decker | Mammillaria grahamii var. grahamii | Cactaceae
|
| MAMI7 | Mammillaria missouriensis Sweet | Escobaria missouriensis var. missouriensis | Cactaceae
|
| MAMU3 | Mammillaria multiceps Salm-Dyck | Mammillaria prolifera var. texana | Cactaceae
|
| MANE4 | Mammillaria nellieae (Croizat) Croizat | Escobaria minima | Cactaceae
|
| MANE5 | Mammillaria neomexicana Engelm. | Escobaria vivipara var. neomexicana | Cactaceae
|
| MANI4 | Mammillaria nickelsiae K. Brandeg. | Coryphantha nickelsiae | Cactaceae
|
| MANI3 | Mammillaria nivosa Link ex N.E. Pfeiffer | woolly nipple cactus | Cactaceae
|
| MAOL2 | Mammillaria oliviae Orcutt | Mammillaria grahamii var. oliviae | Cactaceae
|
| MAOR5 | Mammillaria orestera L. Benson | Mammillaria viridiflora | Cactaceae
|
| MAPA26 | Mammillaria painteri Rose | | Cactaceae
|
| MAPO3 | Mammillaria pottsii Scheer ex Salm-Dyck | rat-tail nipple cactus | Cactaceae
|
| MAPRT | Mammillaria prolifera (P. Mill.) Haw. var. texana (Engelm.) Borg | Texas nipple cactus | Cactaceae
|
| MAPR2 | Mammillaria prolifera (P. Mill.) Haw. | Texas nipple cactus | Cactaceae
|
| MARA9 | Mammillaria ramillosa (Cutak) Weiniger | Coryphantha ramillosa | Cactaceae
|
| MARE8 | Mammillaria recurvata Engelm. | Coryphantha recurvata | Cactaceae
|
| MARH2 | Mammillaria rhodantha Link & Otto | | Cactaceae
|
| MARO8 | Mammillaria robertii (Berger) Weniger | Escobaria emskoetteriana | Cactaceae
|
| MARO5 | Mammillaria robustispina Schott ex Engelm. | Coryphantha scheeri var. robustispina | Cactaceae
|
| MARO6 | Mammillaria roseiflora (Lahman) Weniger | Escobaria missouriensis var. similis | Cactaceae
|
| MARU6 | Mammillaria runyonii (Britt. & Rose) Cory | Coryphantha macromeris var. runyonii | Cactaceae
|
| MASC6 | Mammillaria scheeri Muehlenpfordt | Coryphantha scheeri var. scheeri | Cactaceae
|
| MASIR | Mammillaria similis Engelm. var. robustior Engelm. | Escobaria missouriensis var. robustior | Cactaceae
|
| MASI8 | Mammillaria similis Engelm. | Escobaria missouriensis var. similis | Cactaceae
|
| MASN | Mammillaria sneedii (Britt. & Rose) Cory | Escobaria sneedii var. sneedii | Cactaceae
|
| MASP3 | Mammillaria sphaerica A. Dietr. | longmamma nipple cactus | Cactaceae
|
| MASU11 | Mammillaria sulcata Engelm. | Coryphantha sulcata | Cactaceae
|
| MATE4 | Mammillaria tetrancistra Engelm. | common fishhook cactus | Cactaceae
|
| MATH | Mammillaria thornberi Orcutt | Thornber's nipple cactus | Cactaceae
|
| MATU3 | Mammillaria tuberculosa Engelm. | Escobaria tuberculosa | Cactaceae
|
| MAVA4 | Mammillaria varicolor (Tiegel) Weniger | Escobaria tuberculosa | Cactaceae
|
| MAVI6 | Mammillaria viridiflora (Britt. & Rose) B�decker | greenflower nipple cactus | Cactaceae
|
| MAVIA | Mammillaria vivipara (Nutt.) Haw. var. arizonica (Engelm.) L. Benson | Escobaria vivipara var. arizonica | Cactaceae
|
| MAVIB | Mammillaria vivipara (Nutt.) Haw. var. borealis Engelm. | Escobaria vivipara var. vivipara | Cactaceae
|
| MAVID | Mammillaria vivipara (Nutt.) Haw. var. deserti (Engelm.) Weniger | Escobaria vivipara var. deserti | Cactaceae
|
| MAVIN | Mammillaria vivipara (Nutt.) Haw. var. neomexicana (Engelm.) Engelm. | Escobaria vivipara var. neomexicana | Cactaceae
|
| MAVIR | Mammillaria vivipara (Nutt.) Haw. var. radiosa Engelm. | Escobaria vivipara var. radiosa | Cactaceae
|
| MAVI8 | Mammillaria vivipara (Nutt.) Haw. | Escobaria vivipara var. vivipara | Cactaceae
|
| MAWI3 | Mammillaria wilcoxii Toumey ex K. Schum. | Mammillaria wrightii var. wilcoxii | Cactaceae
|
| MAWRW | Mammillaria wrightii Engelm. var. wilcoxii (Toumey ex K. Schum.) W.T. Marsh. | Wilcox's nipple cactus | Cactaceae
|
| MAWRW2 | Mammillaria wrightii Engelm. var. wrightii | Wright's nipple cactus | Cactaceae
|
| MAWR2 | Mammillaria wrightii Engelm. | Wright's nipple cactus | Cactaceae
|
| MAMMI | Mammillaria Haw. | globe cactus | Cactaceae
|
| MAPU2 | Mancoa pubens (Gray) Rollins | Transpecos cress | Brassicaceae
|
| MANCO | Mancoa Weddell | mancoa | Brassicaceae
|
| MAAU6 | Mandragora autumnalis Bertol. | mandrake | Solanaceae
|
| MAOF | Mandragora officinarum L. | mandrake | Solanaceae
|
| MAVE5 | Mandragora vernalis Bertol. | Mandragora officinarum | Solanaceae
|
| MANDR | Mandragora L. | mandrake | Solanaceae
|
| MALO | Manfreda longiflora (Rose) Verhoek-Williams | longflower tuberose | Agavaceae
|
| MAMA7 | Manfreda maculosa (Hook.) Rose | spice lily | Agavaceae
|
| MASI | Manfreda sileri Verhoek-Williams | Siler's tuberose | Agavaceae
|
| MATA4 | Manfreda tamazunchalensis Matuda | Manfreda variegata | Agavaceae
|
| MATI | Manfreda tigrina (Engelm.) Small | Manfreda virginica | Agavaceae
|
| MAVA | Manfreda variegata (Jacobi) Rose | mottled tuberose | Agavaceae
|
| MAVIT3 | Manfreda virginica (L.) Salisb. ex Rose var. tigrina (Engelm.) Rose | Manfreda virginica | Agavaceae
|
| MAVI5 | Manfreda virginica (L.) Salisb. ex Rose | false aloe | Agavaceae
|
| MAXI | Manfreda xilitlensis Matuda | Manfreda variegata | Agavaceae
|
| MANFR | Manfreda Salisb. | tuberose | Agavaceae
|
| MAAL15 | Mangifera altissima Blanco | pahutan | Anacardiaceae
|
| MACA22 | Mangifera caesia Jack ex Wallich | binjai | Anacardiaceae
|