> I have beautiful growth of Riccia in my daphnia tubs all winter where the
> temperature goes down to the low 40s. In the summer, it survives but doesn't
> thrive at 65 degrees.
>
Riccia is native to PA. I collected some from a vernal pool on the floodplain of
Jacob's Creek just below the confluence with Greenlick. I have had it growing in
my watercourse pools quite prolifically for years. It even grows terrestrially
like moss on moist rocks above the water.
It does not grow in my main pond - I think because the Golden Shiners eat it - as
they do also duckweed.
Jeff
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