| Abbrev | Name | Spec | Type | Locality |
|---|---|---|---|---|
| AA5 | ANHINGA-5[2964]; | TR.DR | S | MEX |
| AA6 | ANHINGA-6[2964]; | TR.DR | S | MEX |
| AA7 | ANHINGA-7[3692]; | TR.DR | S | MEX |
| A.ACUT | A.ACUTUM[1281]; | |||
| AAG | ARROIOAGUSTA[900][1281]; | TR.AE | S | BRA |
| AAL | AALAS-DIPLOID[900][1281]; | TR.AE | I | YEM |
| AAR85 | AAR-85[1281]; | TR.AE | S | MEX |
| AARI | AARI-83[1281]; | TR.AE | S | PAK |
| AAT | ASHANTI[900][1281]; | TR.AE | ||
| AAW | ARAWA[900][1281]; | TR.AE | I | NZL |
| AAZ | ALCATRAZ[1281]; | TR.DR | S | MEX |
| AAZ1 | ALCATRAZ-1[1281]; | TR.DR | S | MEX |
| AAZ2 | ALCATRAZ-2[1281]; | TR.DR | S | MEX |
| AAZ3 | ALCATRAZ-3[1281]; | TR.DR | S | MEX |
| AAZ4 | ALCATRAZ-4[1281]; | TR.DR | S | MEX |
| AAZ5 | ALCATRAZ-5[1281]; | TR.DR | S | MEX |
| AAZ77 | ALCATRAZ-77[1281]; | TR.DR | S | MEX |
| Ab | ALBIT[1112] | TR.AE | W | USA |
| AB,1 | ALBIT[900] | TR.AE | W | USA |
| AB,2 | AMERICAN-BANNER[1112] |