Is this a red Suncup?

I need help in identifying this wildflower. Below is a picture of the entire plant showing the narrow leaves (4-5 major veins parallel to each other along the long dimension of the leaf). 5-6 narrow stalks come out of the base and each stalk branches off to 4-6 narrower stalks each with a red 5-petal flower at the top. Plant stands 18 to 30 inches tall. Click on the picture to bring up a full-res picture of the plant (1.2 MB in size---2560x1920). Go back to album page.

suncup plant