Monographs Details: Digitaria filiforimis (L.) Koeler
Authority: Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Description:Species Description - Branched from the base, erect or ascending; blades 2–6 mm wide, flat, at least the lower commonly pilose; racemes 2–6, erect or ascending, often distinctly separated at base; rachis triquetrous, scarcely winged; spikelets in pairs or threes, well separated and scarcely overlapping; first glume lacking; the second three-fifths to three-fourths as long as the spikelet, usually pubescent and erose-ciliate with capitellate hairs; fertile lemma dark brown or purple; 2n=36. Fields and open ground, often a troublesome weed southward. Forms with glabrous spikelets occur in both vars. (D. laeviglumis)