| Abbrev | Name | Spec | Type | Locality |
|---|---|---|---|---|
| MATUP | MATUPARI[740][1281]; | TR.AE | S | MEX |
| MAYA | MAYA-74[114][144][1281]; | TR.AE | S | GTM |
| MBB | MOHAMED-BEN-BACHIR[1281]; | TR.DR | S | DZA |
| MBU,2 | MARABU[115] | TR.DR | S | MEX |
| MCA | MEAUCA[115][1281]; | TR.DR | S | MEX |
| MCH | MICHURINKA[1281]; | TR.DR | W | UKR |
| MCI | MARACAI[145][145][1281]; | TR.AE | S | BRA |
| MCLR | MONTES-CLAROS[145][1281]; | TR.AE | S | BRA,MEX |
| MCM | MC-MURACHY[144][1281]; | TR.AE | CAN | |
| MCN | MACOUN[1281]; | TR.DR | S | CAN:SASKATCHEWA |
| MCT | MACHETE[740]; | TR.AE | W | AUS |
| MCU | MACUCO[145][144][1281]; | TR.AE | S | BRA |
| MCV1 | MACVANKA-1[1281]; | TR.AE | W | YUG |
| MCV2 | MACVANKA-2[1281]; | TR.AE | W | YUG |
| MD,1 | MARNE-DESPREZ[1281]; | TR.AE | FRA | |
| MD,3 | MADUR | TR.DR | HUN | |
| MDA | MEDJERDA[1281]; | TR.DR | S | LBN,SYR |
| MDR | MONDUR[1281]; | TR.DR | S | FRA |
| MDS | MENDOS[219][1281]; | TR.AE | S | AUS |
| ME | MARIA-ESCOBAR[145][1112][1281]; | TR.AE | S | ARG |