The stalks are jointed and each one has a small whitish sheath. Used by early Californians to scour eating utensils and pots. Found very close to water. The stem is triangular and the fruiting heads resemble pinecones. True Grasses 9.
Stems end with a bushy seed head.
Seed bracts have rough sharp spikes that like to cling to socks, fur, etc. The heads grow erect and are usually higher than the grass blades. Found in moister areas. The leaves and the heads are spreading with the seed pods dropping downward. Found in both wet and dry places.