R. Wells and from Coffey and Clayton, 1988Water hyacinth
R. Wells and from Coffey and Clayton, 1988Water hyacinth
R. WellsSalvinia
R. WellsWeed cutter
from Coffey and Clayton, 1988Alligator weed takes over a Northland drain
from Coffey and Clayton, 1988M. aquaticum Cambess
from Coffey and Clayton, 1988Parrot's feather choking a drainage ditch
J. ClaytonA flowering stem apex
from Coffey and Clayton, 1988Azolla filiculoides
NIWATall plant community
