Nymphoides

fish
inverts
plants
   a
   b
   c
   d
   e
   f
   g
   h
   i
   j
   l
   m
   n
     Naiadia
     Najas
     Navarretia
     Nelumbo
     Nepsera
     Neptunia
     Nesea
     Nuphar
     Nymphaea
     Nymphaeaceae
       Barclaya
       Nuphar
       Nymphaea
       Nymphoides
         aquatica
           Richards
           banana
           flower
         aurantiaca
         balakrishnan
         beaglensis
         crenata
         cristata
         exiliflora
         ezannoi
         furculifolia
         indica
         krishnakesara
         minima
         parvifolia
         peltata
         simulans
         sp Taiwan
         spinulosperma
         triangularis
       Ondinea
       Victoria
     Nymphoides
   o
   p
   r
   s
   t
   u
   v
   w
   x
   z
misc

Nymphoides

Richards

Richards et. al. (2010) explains the unique Banana Plant morphology, physiology and reproduction well. These are the photos from that paper.

See:
http://www.amjbot.org/content/97/11/1761.full.pdf+html
(Open access)

banana

for scale

flower

"During sexual reproduction of species in the aquatic genus Nymphoides (Menyanthaceae), the flowers appear to arise directly from the petiole of a floating leaf"