Species Trapa natans was not found by BioGalileoBaxter on 2009-10-22

Field Notes

n/a

Supporting evidence

On the Trapa natans the leaf shape is triangular and toothed edges, but on our evidence the leaf is circular with smooth edges.

We found these floating on the surface, but this has one leaf per stem and on the Trapa natans it has two leaves per stem.

On the Trapa natans there is a lump on the stem(the chest nut), but there is none on the stem that we have found.

Species Observation:
Species Looked For

Common name:

Water chestnut

Scientific name:

Trapa natans

Was found?

I think I did not find it

Count of individuals?

50+

Coverage?

Between 1/4 and 1/2

Dead or alive?

Size:

5 - 10 cm

Sex:

Can't tell

Evidence of reproduction:

Flower (plants)

Sampling method:

Weed weasel

Place studied

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Latitude:

43.676480 ° N

Longitude:

-70.287700 ° W

Observation Site Information

Name:

BioGalileoBaxter's visit to Pond in Baxter Woods, Portland, ME (Galileo)

Habitat:

Freshwater - By water's edge

Trip Information

Trip name:

Pond in Baxter Woods, Portland, ME (Galileo)

Trip date:

2009-10-22

Nearest town:

Portland, ME

Type of investigation:

Species and Habitat Survey

Ecosystem:

Freshwater

MIDAS number:

Watershed:

Presumpscot

Nearest waterbody:

Habitat Observations

Diversity:

4 different species

Water temperature:

6.8 ° C

pH:

6.0

Dissolved oxygen:

5.0 mg/L

Salinity:

Vectors:

Walking trail
People

Comments

Hi -- You probably know we

Submitted by JMcPhedran on Wed, 03/31/2010 - 16:30.

Hi -- You probably know we don't have Trapa natans yet in Maine (as far as we know), so I sure am glad you didn't find it. The State of Vermont has spent millions of dollars removing Trapa natans from Lake Champlain over the years -- it's not something we want to have to deal with here.

You did well in comparing leaf and stem characteristics between your plant and Trapa.

Finally, what do you think it is?

(My guess: Nymphaea odorata; see what you think:
http://www.mainevolunteerlakemonitors.org/mciap/herbarium/FragrantWaterl...)

Thanks and keep searching!

Pictures

Submitted by SALSES on Wed, 12/02/2009 - 14:45.

Good pictures from all angles of the plant. NiCe jOb! :)

Trapa natans was NOT FOUND

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Hi -- You probably know we

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