identification

[TC]

I noticed this Arum flowering among a large clump of Arums with white flowers and marbled leaves.  The one in the picture is smaller and the leaves are just green.  It has also flowered some weeks later.  I grew my Arums from seed and they have been in at least 10 years.  Is this one a hybrid or a rogue seed that got sown with the originals?

[arisaema]

That's Arisaema candidissimum, maybe a rogue seed or bulblet that reached maturity?

[Véronique Macrelle]

incredible to obtain this species by a rogue sowing!!!
it is beautiful.