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Re: Potamageton species information
- To: Aquatic-Plants at actwin_com
- Subject: Re: Potamageton species information
- From: DandelionSea at aol_com
- Date: Wed, 16 Jul 2003 14:25:12 EDT
Paul Wrote:
> I have another species of Potamogeton that I got from John Glaeser of
> the Madison (Wisconsin) Aquarium Gardeners Club. He got it from a
> lake in southeastern Wisconsin. It produces no floating leaves and
> has narrow translucent leaves with wavy edges. It looks like a cross
> between P. perfoliatus and Najas. Its leaves are longer and narrower
> than those of perfoliatus, and its stems are much thinner. Like
> perfoliatus, it spreads rapidly, given decent lighting. It is a
> nice-looking plant, and is smaller and more delicate than many of the
> other Potamogetons. I have it confined to a gallon jar on the
> windowsill,now, but it can be multiplied quickly.
>
Paul,
I live in Michigan (which I estimate has similar flora and fauna to
Wisconsin) and I believe I know what species you're talking about. Michigan has about
10 or 15 different Potamageton species, and I have collected here Potamageton
crispus and Potamageton richardsonii, both of which look a lot like what
you're describing. The lake I collected these from had a real algae problem due to
fertilizer runoff from the farms a few miles away, and the internodes on the
plants I collected were very long. The stems of both species are very
delicate, and the leaves are translucent and undulate. The ones I collected were
greenish brown in color, but the color and translucent blades highly resembled
those of Aponogeton ulvaceus when I nursed them back to health. I'm always
seeking positive IDs on North American aquatic plants.
Here's a URL with line drawings of the two species:
http://www.deq.state.mi.us/documents/deq-lwm-inlandlakes-commonplants.pdf
Hope that helps you with the ID,
Brian Rippon
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