5557 (55¢) Chien-Shiung Wu

5558 (55¢) Garden Beauty – Pink Flowering Dogwood
5559 (55¢) Garden Beauty – Orange and Yellow Tulip
5560 (55¢) Garden Beauty – Allium
5561 (55¢) Garden Beauty – Pink Moth Orchid with Mottled Petals
5562 (55¢) Garden Beauty – Magenta Dahlia
5563 (55¢) Garden Beauty – Yellow Moth Orchid with Pink Center
5564 (55¢) Garden Beauty – Pink and White Sacred Lotus
5565 (55¢) Garden Beauty – White Asiatic Lily
5566 (55¢) Garden Beauty – Rose Pink and White Tulip
5567 (55¢) Garden Beauty – Pink American Lotus
a. Block of 10, #5558-5567
b. Convertible booklet pane of 20, 2 each #5558-5567

5568 (75c) Colorado Hairstreak Butterfly