spike rush

Types:

Chinese water chestnut, Eleocharis dulcis, water chestnut

Chinese sedge yielding edible bulb-shaped tubers

Eleocharis acicularis, hair grass, needle rush, needle spike rush, slender spike rush

fine-leaved aquatic spike rush; popular as aerator for aquariums

Eleocharis palustris, creeping spike rush

cylindrical-stemmed sedge

Type of:

sedge

grasslike or rushlike plant growing in wet places having solid stems, narrow grasslike leaves and spikelets of inconspicuous flowers