Trillium luteum, sometimes commonly called yellow trillium, grows up to 15" high. An unbranched, naked stem is topped by three, evenly-spaced, sessile, lanceolate to rounded, dark green, hosta-like leaves (4" long) that are often mottled. The flower (2" high) features three erect, yellow petals and three narrow, greenish sepals and appears stalkless atop the center of the three-leaf whorl. Flowers may have a faint lemon scent. A clump-forming plant with stems arising from thick, underground rhizomes which will spread slowly if left undisturbed. Foliage will usually die to the ground by mid-summer, particularly if the soil is allowed to dry out.