Agrostis perennans (Walt.) Tuckerm.
Autumn Bentgrass

Habit: 		Perennials, mostly tufted.
Culms: 		Erect or somewhat decumbent, usually weak and lax rarely stout and tall, 30-100 cm. tall,
		smooth or nearly so.
Blades: 	Usually numerous, flat, scabrous, 10-20 cm. long, 1-6 mm. wide.
Sheaths: 	Mostly shorter than the internodes.
Ligule: 	Membranous, 3-6 mm. long.
Inflorescence: 	Panicle ovoid-subcylindric, often included at the base, pale, diffuse, 10-20 cm. long,
		axis and slender branches scabrous, branches spikelet-bearing from the middle, the ultimate ones diverging.
Spikelets: 	2-3 mm. long, numerous, small, 1-flowered, disarticulating on the keel, persistent, membranous, awnless.
Glumes: 	Subequal, or the first slightly longer, acuminate, hispidulous on the keel, persistent, membranous, awnless.
Lemmas: 	Shorter than the glumes, 1.5-2 mm. long, broad, obtuse, thin-hyaline, awnless or rarely awned,
		with a minute tuft of hairs at each side at the base.
Palea: 		Obsolete or nearly so.
Fruit: 		Grain about 1.5 mm. long, 0.5 mm. wide, spindle shaped.
Habitat: 	Open woods, open ground, old fields.  August-September.
Kansas Range:	East fifth.
Synonyms:	Agrostis altissima (Walt.) Tuckerman
		Agrostis elata (Pursh) Trin.
		Agrostis oreophila Trin.
		Agrostis perennans (Walt.) Tuckerman var. aestivalis Vasey
		Agrostis perennans (Walt.) Tuckerman var. elata (Pursh) A.S. Hitchc.
		Agrostis schweinitzii Trin.