Key to grasses, rushes and sedge plants
| 1 | a | visible sheath, ligule and blade | GO TO 2 |
| b | no visible sheath, ligule and blade | GO TO 5 |
|
| 2 | a | taller than 60cm | Common reed |
| b | less than 60 cm | GO TO 3 |
|
| 3 | a | growth rhizomatous | GO TO 4 |
| b | no rhizomes, growth tufted | Rice grass |
|
| 4 | a | leaves short~7 cm long | Greencouch |
| b | leaves ~15 cm long | Saltcouch |
|
| 5 | a | leaves flat in cross-section | GO TO 10 |
| b | leaves are not flat in cross-section | GO TO 6 |
|
| 6 | a | leaves with parallel lines | Streaked arrow grass |
| b | leaves with no paiallel lines | GO TO 7 |
|
| 7 | a | round flower head |
Knobby club rush |
| b | no round flower head |
GO TO 8 |
|
| 8 | a | growth habit >30 cm tall | GO TO 9 |
| b | growth habit <30 cm tall | GO TO 10 |
|
| 9 | a | cluster of flowers on each stem |
Jointed rush |
| b | solitary flower head |
Rusty sedge |
|
| 10 | a | flowers clustered along branches |
Toad rush |
| b | flowers in spikelet with one or two flowers |
GO TO 11 |
|
| 11 | a | flowers with Leaf stem extending past spikelet | Rusty sedge |
| b | flowers ovoid in shape |
Nodding club rush |
