One of my favorite spring flowers is bloodroot (sanguinara canadensis).  We have a rather happy patch in a clump of ferns/wintercreeper at the base of the old pear tree stump.  When I looked a few days ago, only a few buds were up, today I came home from work and the patch was a sparkling white.  There are few other flowers that grow here that have that level of bright shine and absolutely pure white color (or non color!).