Might be dogtooth violet (erythronium)

its not erythronium as the foliage isn't strap like and this is. I am assuming it is in a standard tray [about12" long]. it does look like a rhizomatous iris [possibly the native yellow flag]that has been allowed to dry out. there appears to be some green at the right hand end.

I'd cut the end off so the green end has about 2-3" of rhizome left on it. plant in a good moist compost and see what happens. did you find it or have you dug it up?

I found it in the potting shed the other day when I was having a tidy up. It’s been there all winter. I’ve soaked it in water overnight.
Thanks for the help. I think it’s probably an iris of some kind.

well I think a bearded iris is the most probable unless you have a pond with iris in. you may be lucky and get it to recover. I always love the challenge.