| Bot. variety | Species | Awnedness | Pubescence | Glume Color | Seed Color | Awn Color |
|---|---|---|---|---|---|---|
| crassicepsinflatum | TR.CO | N | Y | R | W | |
| crassiceps | TR.CO | N | Y | R | W | |
| corvalanii | TR.DR | |||||
| copticum | TR.ET | Y | Y | R | W | R |
| compylodon | TR.DR | Y | N | W | R | W |
| compressum | TR.ET | Y | Y | W | R | W |
| compactum | TR.CO | Y | N | W | W | W |
| columbina | TR.AE | N | Y | G | R | |
| colchicum | TR.MA | Y | Y | W | R | |
| clavatum | TR.CO | N | Y | C | R | |
| cinerosum | TR.AE | Y | N | G | W | |
| cinereum | TR.AE | N | N | C | R | |
| cinerescens | TR.AE | N | N | G | W | |
| cineraceum | TR.DR | Y | Y | W | W | W |
| chrysospermum | TR.PO | Y | N | W | W | W |
| choresmum | TR.AE | N | N | G | W | |
| chiovendae | TR.AE | Y | N | T | W | |
| cauleucurum | TR.DR | |||||
| cauleucomelan | TR.DR | |||||
| cauhordeiforme | TR.DR |