Phyllostachys vivax 
Piptatherum miliaceum 
Porcupine Grass 
Purple False Brome 
Purple Lovegrass 
Purple Moor Grass 
Purple Pampas Grass 
Purple Plume-Grass 
Purpletop Tridens 
Quaking-grass 
Rabbitfoot Grass 
Rattlesnake Mannagrass 
Ravennagrass 
Red-anther Wallaby Grass 
Reed Canary Grass 
Rendle's meadow foxtail 
Rhodes grass 
Rye 
Sacred Bali Bamboo 
Saltmarsh Cordgrass 
Sclerodactylon 
Sea oats 
Secale montanum 
Siberian Grass