High Quality Content by WIKIPEDIA articles! Galium ambiguum is a species of flowering plant in the coffee family known by the common name Yolla Bolly bedstraw. It is native to the North Coast Ranges of California and the Klamath Mountains of northern California and southern Oregon, where it grows in the mountain forests. It is a hairy, mat-forming perennial herb producing clumps of small green stems up to about 15 centimeters long. The stems have whorls of four narrow, pointed linear leaves each. The plant is dioecious, with individuals bearing either male or female flowers. The staminate flowers are borne in clusters, while the pistillate flowers appear singly in leaf axils; both types of flower are yellow-green in color.