Every summer, wildflowers spread their glorious color across the countryside of America - they fill the woodlands, flourish in the prairies, run rampant in the mountains, and carpet the hillsides. In 1992 the Postal Service gathered 50 of the most popular varieties, put them in a bouquet, and presented them to the public. Each of the species featured on these lovely stamps is native to North America and can be found today in at least one of the 50 states.