from Coffey and Clayton, 1988Plants in Lake Wanaka
from Coffey and Clayton, 1988Specimen of R. limosella
from Coffey and Clayton, 1988G. diandrum in the upper Waikato River
NIWAcover.jpg
from Coffey and Clayton, 1988Flowering E. densa at the water surface
R. WellsP. ochreatus
R. WellsO. ovalifolia
