Western Meadowlark ~ Sturnella neglecta In 1844, Audubon observed that although the species was known to members of the Lewis and Clark expedition, no one had taken the least notice of these birds since. Consequently, Audubon named the Western Meadowlark, Sturnella neglecta. Today the tag no longer fits, as six states have picked Meadowlarks as their state birds. The Western Meadowlark unleashes a bubbling medley of rich, flutelike phrases that is well-known from the Great Lakes to the Pacific Ocean.
Oregon Grape ~ Mahonia aquifolium The Lewis and Clark Expedition into the Northwest Territory is credited with bringing the Oregon Grape to the East where it has been grown and appreciated as an ornamental flower ever since. The Oregon Grape’s lustrous, dark green, leathery leaves, pyramidal spikes of bright yellow flowers, and light blue grapelike fruits in early summer, make it effective for use in many garden situations. The Oregon Grape (or holly grape as it is also called) was used by the Indians and early and early pioneers as food, medicine, and drink.
From The Wildflowers of the 50 States U.S. stamps issued July 24, 1992: