spring beauty

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of various succulent, spring-flowering plants of the genus Claytonia, especially C. virginica, of eastern North America, having narrow leaves and racemes of white or pinkish flowers.

from The Century Dictionary.

• noun A common American wild flower of the genus Claytonia, especially C. Virginica, a low, succulent herb, sending up from a deep-set tuber in early spring a simple stem bearing a pair of narrow leaves and a loose gradually developing raceme of pretty flowers, which are white or rose-colored with deeper veins. See cut under Claytonia. The smaller C. Caroliniana, with spatulate or oval leaves, is more northern except in the mountains.
• noun In entomology, a beautiful little butterfly of America, Erora læta, which appears in spring, and has the hind wings in the male brown bordered with blue, in the female mostly blue.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of various species of flowering plant of the genus Claytonia, primarily native to the Americas and northeastern Asia.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun small slender plant having one pair of succulent leaves at the middle of the stem and a loose raceme of white or pink or rose bowl-shaped flowers and an edible corm