Can anyone identify this plant?

I've no idea Sally but shall be very interested in your replies as it grows in my garden too. I've often wondered what it is!

I have owned this plant years ago I think it could be a voodoo lily but I will find out.

It looks like a type of Arisaema, not sure which one.

It certainly looks like a Lily type, very similar leaf to the Arum, but being spotted would say Bobski is right.

It looks like Arisaema grifithii. I have one in my garden.

I am now pretty sure that I was right, dont know how I plucked this from my memory banks it must be 18 years ago I rode on my pushbike with the plant and my 3 year old daughter on the back. She is now 21 yrs old.

go to this web site:
http://www.cpukforum.com/forum/index.php?showtopic=22050

The smell of the flower is of rotting meat which is an attraction for flies it's carniverous!

I was thinking that it looks like our Voodo Lily but didn't see how Sally could not have mentioned the flower.
Also, the Voodoo Lily is frost tender and prefers o completly dry winter rest - unusual outside in the UK.
Do you have a picture of the flower, Sally, it would make life much easier?

I'd say Arisaema, though not necessarily griffithii

I don't remember mine ever having flowers, just the spotted stem and leaves, then dies down. Just been out to check as it's in a place I don't look at much and comes up through the gravel. Doesn't seem to be there this year, maybe the hard winter saw it off.

Could it be Dracunculas.Mine come up every year,with spotted stems,and three leaves per plant,but unluckily mine have never flowered

Amorphophallus konjac.

I have one growing in my greenhouse called Morph, for obvious reasons

Doesn't look tall enough to me, would be at least 15 inches high. Take a look at http://www.kallus.com/aroids/amorphophallus/konjac/ Sally and let us know if there is a flower like this - also does it stink when it is flowering?

That's great, thanks so much for your help! Having looked on the web at the suggestion you've given I believe it is a Voodoo Lily and this flickr.com/photos/msitua/2578227246 confirmed it. If I remember correctly it flowers before the leaf appears, but I can't recall it ever smelling of rotting flesh, I will however make a point of checking next year.
Thanks again for your help.

The Voodoo lily is not hardy outdoors in this country. It is definitely an Arisaema.

Sauromatum venosum (syn. Arum cornutum) The Voodoo Lily - an exotic and fascinating spring flowering tuber, producing an arisaema-like flower spathe, heavily spotted purple. Later, a purple spotted stem carries a deeply lobed leaf which persists until late autumn. Slightly tender and in all but the mildest climates is best lifted, dried off and stored frost-free for winter. Ht.18” (45cm).

So Fractal now we just need to decide which one... a pix of the spathe would have helped. Gusmann's book on Arisaemas rarely shows the stem oh well...

As an aside D & I have something of a collection of Arisaemas and collect seed each year. If any GoYers would like to grow these extremely unusual plants we are happy to send you some seed in autumn - just send me a PM

Amorphophallus konjac and Sauromatum venosum look similar esp with the spotted stem, a picture of the leaf would be a better clue!

Nicky as has been already said by Fractil the Voodoo Lily is frost tender... if Sally has growing in open ground then it is far more likely to be an Arisaema.
Question why are you so attached to it being Amorphophallus konjac? None of us knows so much that we can state with any authority that 'This is X' If I could get a decent pix from Sally I'd send to John Jaques Amand for advice.