Looks like a Triffid!?!

Spotted these while out walking. Any idea what they are? Freaky looking things and they're huge!!!

 

Lysichiton or skunk cabbage?

http://www.crocus.co.uk/plants/_/lysichiton-americanus/classid.1467/

 

Could well be Triffids, run away

Or maybe Italian Arums?

 

I know them as Skunk Cabbage.

 

Agree with Madahhlia.
Lysichiton americanus..

http://www.google.co.uk/search?rls=com.microsoft:en-US&q=Lysichiton americanus.&bav=on.2,or.r_qf.&bvm=bv.45645796,d.ZWU&biw=1316&bih=575&wrapid=tlif136736087974610&um=1&ie=UTF-8&hl=en&tbm=isch&source=og&sa=N&tab=wi&ei=e0WAUbn7D4XaPJ7bgJgF

RHS warn that it is invasive.
Cannot say I have found this though.

Quote from RHS...."Please note, this is an invasive plant. It should not be planted in the garden anywhere where it might escape, particularly along any stretch of flowing water. " See...

http://www.rhs.org.uk/Gardens/Harlo...-of-the-month/March/Lysichiton-americanus-AGM

 

obviously those seeds must have been waterborne, good advice.

 

Saw loads of these all over the place when in France last week.Appears to me a bit like the dreaded Japanese Knotweed, people hurl stuff in the river they want rid off and it just appears on someone elses doorstep. I used to live next door to The River Clyde which bordered my garden. We battled with Japanese Knotweed which grew on the banks of the river for 15 years....Japanese Knotweed WON!

 

It`s indestructable, read somewhere, on here I think, you have to have a licence to transport it, it will even come up through concrete.

 

Thanks for the info. Interesting plant. Now I will know what I'm looking at and I shall tell my friend who, I thought would know about it but didn't!

 

Such a shame as they are lovely (looking)