Nymphea caerulea, 'Water Lily'.
Cyperus papyrus, 'Papyrus'
Persicaria limbata, 'Knotweed'. Grows with long bamboo like stems. Small pink-red flowers grown from heads at end of twin stems (Lake Victoria, Uganda).
Thinking of doing expedition travel after everything has calmed down? I do a lot of my guiding and lecturing work on Silversea.