Uvularia grandiflora (Giant Merrybells)
Native to eastern North America, this member of the Lily family is one of the jewels of the spring woodland garden. Because the drooping flowers resemble the uvula (that funny looking, little flapping thing at the back of the throat), it was thought to be good for treating diseases of the throat. Whether or not that worked out, I don't know. What I do know is that this native wildflower is one of the best, growing from 18 to 24 inches high, with gray/green foliage and lemon yellow drooping bells. Uvularia grandiflora forms colonies in partial shade and in rich, moist (but well-drained) soil. It blooms in late spring, and I expect a colony of these wildflowers would be quite the show. Zones 2-9. Cheater Gallons
Uvularia sessilifolia (Bellwort, Straw Lily, Merrybells, Sessile-leaf Bellwort)
This is the diminutive cousin of giant Merrybells above. It is so beautiful and perfect that it's hard to believe it's real. I found our woods full of them one Mother's Day and return to that spot each year around that time to be sure they're intact. No woodland is complete without this native wildflower, if you ask me, and this one is every bit as beautiful as the larger one. This little native grows from 10 to 15 inches tall, with alternate, stalkless leaves. The delicate, straw-colored bells, sometimes in twos, are drooping. These beauties colonize and form a groundcover in time. Uvulairia sessilifolia is native to the lower 48 states and Canada, so just about any zone is right. Illustration from The Native Flowers and Ferns of the United States in Their Botanical, Horticultural, and Popular Aspects by Thomas Meehan. Boston, L. Prang, 1879, volume 2 (plate 44), from Wiki Commons and in the public domain).