types:
rush
grasslike plants growing in wet places and having cylindrical often hollow stems
iva,
marsh elder
any of various coarse shrubby plants of the genus Iva with small greenish flowers; common in moist areas (as coastal salt marshes) of eastern and central North America
sedge
grasslike or rushlike plant growing in wet places having solid stems, narrow grasslike leaves and spikelets of inconspicuous flowers
cattail
tall erect herbs with sword-shaped leaves; cosmopolitan in fresh and salt marshes
sabbatia
any of various plants of the genus Sabbatia having usually pink cymose flowers; occur from acid bogs to brackish marshes
yellow-eyed grass
any of several rushlike plants, especially of the pine barrens of southern United States
grass-of-Parnassus,
parnassia
any of various usually evergreen bog plants of the genus Parnassia having broad smooth basal leaves and a single pale flower resembling a buttercup
Sium suave,
water parsnip
stout white-flowered perennial found wild in shallow fresh water; northern United States and Asia