| Ricerca | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V |
| Sigla | Specie | Status | Corologia | Note |
| Maldom | Malus domestica | |||
| Matita | Matthiola italica | RR | END | |
| Medlup | Medicago lupulina | |||
| Melcil | Melica ciliata | |||
| Melcri | Melampyrum cristatum | |||
| Melmel | Melittis melissophyllum | |||
| Meluni | Melica uniflora | |||
| Merper | Mercurialis perennis | |||
| Minvera | Minuartia verna ssp attica | |||
| Minverv | Minuartia verna ssp verna | |||
| Moemus | Moehringia muscosa | |||
| Monhyp | Monotropa hypopitys | |||
| Musatl | Muscari atlanticum | |||
| Mycmur | Mycelis muralis | |||
| Myoamb | Myosotis ambigens | END | ||
| Myoarv | Myosotis arvensis | |||
| Myoram | Myosotis ramosissima | |||
| Myosyl | Myosotis sylvatica ssp sylvatica | |||
| Myrspi | Myrophyllum spicatum | |||
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