curve

cordofanus

hydrilloides

ilicifolius

madagascariensis

fish
inverts
plants
   a
   b
   c
   d
   e
   f
   g
   h
   i
   j
   l
     Lagarosiphon
       cordofanus
       hydrilloides
       ilicifolius
       madagascariensis
       major
       muscoides
       rubellus
       steudneri
       verticillifolius
     Lagenandra
     Lamiaceae
     Laurembergia
     Lemna
     Lentibulariaceae
     Lepilaenia
     Lilaea
     Lilaeopsis
     Limnobium
     Limnocharis
     Limnophila
     Limosella
     Lindernia
     Liparophyllum
     Littorella
     Lobelia
     Lomariopsis
     Ludwigia
     Luronium
     Lycopus
     Lysimachia
     Lythraceae
   m
   n
   o
   p
   r
   s
   t
   u
   v
   w
   x
   z
misc

Lagarosiphon

(Left to right: Elodea canadensis, Egeria densa, Lagarosiphon major)

This genus is distinguished from the other invasive pondweeds Elodea and Egeria by the leaves being spirally arranged on the stems, and not whorled.