SE British Columbia ~ Hydrophyllum?

These were growing about 10 feet inland from a lakeshore in SE British Columbia. I couldn't make out what they were from my identification guide. They look like they're from the Hydrophyllum family?

http://youtu.be/OMDh7OTfxUw

Thanks in advance for any help or sugestions!

 

Lamiaceae, Mentha arvensis I think.

 

Hey, thank you! Looks like a match. It was in my book - it just didn't have a very clear picture... thanks again!

 

Unlike mint, water-leaf produces basal clumps of divided leaves.

 

Thank you! The learning curve is steep still!

 

Just don't fall down it into water.

 

Plant advice AND life coaching. I got more than I asked for : )

Thank you again... I am sure I will be back on here soon with some more questions.