Nettle sp

Nettle sp

Observation - Nettle sp - UK and Ireland. Description: I can vouch that it stings but the leaves don't really seem right for Common Nettle (cordate leaves) or Small Nettle (truncate). Is this one of the two or something else that has 'escaped' from a garden?

I can vouch that it stings but the leaves don't really seem right for Common Nettle (cordate leaves) or Small Nettle (truncate). Is this one of the two or something else that has 'escaped' from a garden?