| Name | Accession number | Synonym | Species | Habit | Locality |
|---|---|---|---|---|---|
| CP-2770 | TR.AE | ||||
| CORTO | MGH-65.3[128]; | TR.AE | |||
| CONRAD | TR.AE | W | |||
| COMUN-DE-LA-ZORIA | TR.AE | S | |||
| COMBE | TR.AE | ||||
| COKA-RAKOKA | TR.AE | W | |||
| CO-44 | TR.CO | ||||
| CLUB-HEADED | ROUGH-CHAFFED-ESSEX[39]; | TR.CO | |||
| CLOVATINO | TR.AE | W | |||
| CLARKAN-VIGO | CI-12990; | TR.AE | W | ||
| CIPAIANU-74 | TR.AE | W | |||
| CIKOTABA-3 | TR.AE | ||||
| CIGRINHA | TR.AE | ||||
| CI-8333 | CI-8333 | TR.AE | S | ||
| CI-8332 | CI-8332 | TR.AE | W,I | ||
| CI-8327 | CI-8327 | TR.DR | S | ||
| CI-7914 | CI-7914 | TR.AE | S | ||
| CI-7909 | CI-7909 | TR.AE | S | ||
| CI-7735 | CI-7735 | TR.AE | S | ||
| CI-7734 | CI-7734 | TR.AE | S |