Perideridia gairdneri borealis

Description

The plants have a unique appearance for members of the parsley family, and are tall (1-3 feet) and grasslike, with threadlike leaves 1-6 inches long that resemble blades of grass. The plants effectively mimic tall grass and are virtually invisible until they flower, since they tend to grow in grassy meadows, and prefer full sunlight. Like most members of the parsley family, yampah produces umbels of white flowers. The small roots of yampah are about the size of a large unshelled peanut.