Hi all, does anyone recognize this? Is it some type of lily? or a species tulip? I found it in Seattle's arboretum today!

This is what the inside of the flower looks like

Whatever it is it is beautiful!
Thanks

Some Erythronium.
Mine (a little different than these) are done blooming for this year.

around here the common name is dog tooth violet
I have no idea why because they do not look like a violet at all

Too dry here for it to do well, but I like it.

Thanks all - it really is amazing - in the photos you cannot tell but it stands about 1.5 feet and the leaves look to be about a foot long, so a very good sized plant!!
Cheers

much larger than the wild cousin , usually 8-10'' tall

In looking in the database it looks like E. oregonum (the foliage and bloom)

OH wow. Mine are... tiny, really.

Yup sometimes called a Trout Lily

This is in the arboretum so I can't imagine its a cultivar, with the ground covers and flowers they try to keep it natural. But if they don't grow this large in the wild than I guess it isn't natural forming!
You IDers are good! I wasn't sure people would know what they were and you all ID'd it right away!
Thanks again!