Identification: Help ID White Flower over lg ovate leaves

Help ID - Plant has large opposite ovate leaves about 3" long. Flower is about 1/2 inch across with six petals. Growing on an eastern slope in Southern Oregon. Shade provided by mixed mature oak and madrone trees.

 

Looks like Trientalis, Starflower, about which I know nothing, except that it does occur in Oregon see this efloras page for info about Trientalis borealis subsp. latifolia.

 

Wendy beat me to it. Spent too much time looking at this:
www.fs.fed.us/wildflowers/plant-of-the-week/trientalis_borealis.shtml
Used to see these in New Hampshire.

 

Thanks all,

I didn't spot it in my books because the only image of a Starflower had a pink flower. I was looking in the white section and completely missed it. Definitely a starflower.

 

Ages pink.