East of the Cascade Mountains of Oregon and Washington
Nettle Family: Plants having tiny green flowers without petals arranged in thin, stringy clusters. Toothed leaves are opposite. Plants are covered with stinging hairs!
Arum Family: Plants having a large, yellow leaf that surrounds a yellow spike of tiny flowers. Basal leaves very large. Plants have a sulfur odor when in bloom!
Goosefoot Family: Tiny green or red flowers in clusters. Petals not apparent, but flowers may have 3 or 5 tiny petal-like lobes. The herbaceous parts are frequently fleshy and may have a white, scruffy appearance.
Amaranth Family: Sorry, but this one's not operational yet! Weedy plants having tiny flowers in thick spikes or clusters. Leaves lack the white, scruffy appearance.