| Abbrev | Name | Spec | Type | Locality |
|---|---|---|---|---|
| YU6 | YU-6[1281]; | TR.DR | S | MEX |
| YU7 | YU-7[1281]; | TR.DR | S | MEX |
| YU8 | YU-8[1281]; | TR.DR | S | MEX |
| YU9 | YU-9[1281]; | TR.DR | S | MEX |
| YUAN | YUAN-YANG[3692]; | TR.DR | S | MEX |
| YUAN1 | YUAN-1[1281]; | TR.DR | S | MEX |
| YUAN2 | YUAN-2[1281]; | TR.DR | S | MEX |
| YUAN3 | YUAN-3[1281]; | TR.DR | S | MEX |
| YUAN4 | YUAN-4[1281]; | TR.DR | S | MEX |
| YUAN5 | YUAN-5[1281]; | TR.DR | S | MEX |
| YUB | YOU-BAO[1281]; | TR.AE | CHN | |
| YUG | YUGOSLAVIA[1281]; | TR.AE | TK | |
| YUK | YARMUK[1281]; | TR.DR | S | LBN,SYR |
| YUMAD | YUMA[3733] | TR.AE | S | USA |
| YUN | YUN-78-11[1281]; | TR.AE | CHN | |
| YUN437 | YUN-ZHI-437[1281] | TR.AE | CHN | |
| YUXI10 | YUXI-10[1281]; | TR.AE | ||
| YUYA | YUUYAKE-KOMUGI[1281]; | TR.AE | JPN | |
| YVS | YAVAROS[3733] | TR.AE | S | USA |
| Yw | YORKWIN[1112] |