Debra GlasgowRob Stewart
R. WellsWeed harvester
from Coffey and Clayton, 1988Ludwigia peploides spreading on the lower Waikato River
A. TaumoepeauReed sweet grass
P. ChampionManchurian wild rice in flower
from Coffey and Clayton, 1988Swamp willow weed
from Coffey and Clayton, 1988Lemna minor
R. Wells and from Coffey and Clayton, 1988Water hyacinth
R. Wells and from Coffey and Clayton, 1988Water hyacinth
R. WellsSalvinia
