Sorghastrum nutans ( L). Nash, indiangrass, is a native, perennial, warm-season grass, and a major component of the tall grass vegetation which once dominated the prairies of the central and eastern United States. Indiangrass grows 3 to 5 feet tall. Even as a young plant, it can be distinguished from other native grass species by the “rifle-sight” ligule at the point where the leaf attaches to the stem. The leaf blade also narrows at the point of attachment. The seed head is a single, narrow, plume-like panicle of a golden brown color. The seed is light and fluffy with small awns attached. This native perennial grass is 3-7' tall and unbranched. It typically consists of tight bunches of flowering culms and their leaves. The culms are terete, glabrous, and light green to pale yellow. The blades of the alternate leaves are up to 2' long and ½" across; they are dull green to dark green, flat, and hairless. The blade of each leaf ascends upward from the culm and spreads outward towards its tip. The leaf sheaths are dull green, hairless, and open. The nodes of the culms are slightly swollen, dark-colored, and covered with fine silky hairs (at least when they are young). Most of the leaves are located along the lower halves of the culms. Each culm terminates in a narrow panicle of floral spikelets. This panicle is up to 14" long and it has several ascending branchlets that are individually up to 4" long. The branchlets are some shade of golden brown or tan, mostly glabrous, and slender. However, the tips of the branchlets underneath the spikelets usually have fine silky hairs. Each branchlet terminates in a one-flowered spikelet about 1/4" (6 mm.) to 1/3" (8 mm.) long. This spikelet consists of a pair of appressed glumes and a pair of membranous lemmas within. The glumes are about the same length as the spikelet; they are golden brown to tan, lanceolate, gently curved, and somewhat shiny. One glume is covered with silky white hairs, while the other glume is mostly hairless. The fertile lemma has a long awn at its tip that is often bent, curly, or twisted; this awn is about ½" in length. At the base of each spikelet, there is an obsolescent pedicel up to ¼" long; this pedicel is covered with silky hairs and it lacks a spikelet at its apex. The floret of each spikelet has 3 stamens with yellow to brown anthers and 2 stigmas that are white and plumose. The blooming period occurs during late summer to early fall. At this time, the branchlets of the panicle spread outward slightly; afterwards, they become more appressed and ascending. The root system is fibrous and has short rhizomes.