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.

[TC]

Thank you for the I.D.  It is growing next to a large clump of Arum  italicum Pictum.  All the arum seeds were from the seed exchange and sown at the same time about 10 years ago. The arums flowered after a few years and are increasing., there must have been an arisaema seed among among the arums and that is why I thought it was a "hybrid" or rogue seed.  Since I posted my request, I noticed that another flower is growing.

[ashley]

I hope Tom doesn't mind if I piggy-back here.

Can anyone please identify this monocot with pleated leaves & orange roots?

[fermi de Sousa]

Possibly a Cypella or whatever genus it's in now,
cheers
fermi

[ashley]

Thanks for the lead Fermi.
It'll be interested to see what it turns out to be.

This spring a volunteer tropaeolum appeared in recycled potting mix which turned out to be T. argentinum.
I've never grown this or knowingly had seed, so its origin is a complete mystery.

[ashley]

Possibly a Cypella or whatever genus it's in now

Cypella aquatilis looks like a possibility.  Time will tell.