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Re: [APD] RE: substrate vs the water column
>That is not all roots do, try Spadderdock, lilies, Hydrilla, Potamogeton,
>Swords, Crypts, => roots are storage organs as are leaves, they also
>provide mechanical support to keep the lotic weeds like Swords attached in
>fast flowing water that shears the banks where they live.
In Aponogeton, the tuber is the storage, the up to a foot long white
roots coming from the crown seem to have no purpose if not to seek out
and assimilate nutrients.
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