Andropogon virginicus var. virginicus
Culms 40-210 cm; internodes green. Leaves green or slightly glaucous, glabrous or pubescent, at least on the margins near the collar. Inflorescence units with 2-5(7) rames; subtending sheaths (2.2)3.3-4.4(5.6) mm wide; peduncles (2)3-6(12) mm; rames (0.5)1.9-3.3(4.4) cm, not exserted.
Del., W.Va., Pacific Islands (Hawaii), Fla., Puerto Rico, N.J., Conn., Mass., R.I., La., N.C., Tenn., N.Y., Pa., Va., Ont., Calif., Ala., Ark., Ill., Ga., Ind., Iowa, Okla., Ky., Md., Tex., Ohio, Mo., Mich., Miss., D.C., Kans., S.C.
Andropogon virginicus var. virginicus is the widespread and weedy variety of A. virginicus that grows as a native species from the central plains through Mexico and Central America to Colombia and, as a naturalized species, in California, Hawaii, Japan, and Australia.
Plants colonizing openings in mature vegetation created by disturbance have green culms and green, pubescent leaves. Those growing in poorly drained soils of pond margins, swales, and cutover flatwoods have glaucous culms and glabrous, green to somewhat glaucous leaves. Glaucous plants of A. virginicus var. virginicus differ from those of var. decipiens in having no exposed rames and, often, wider sheaths subtending the inflorescence units.