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Annual. Culms slender, tufted, erect or geniculate at base, (5–)15–50(–80) cm tall, 1–2 mm in diam., 3–4-noded, below each node usually a line of glands. Leaf sheaths usually shorter than internodes, along summit and margin with long silky hairs, along veins glandular especially in middle vein or tuberulate hispidulous; ligules a line of hairs; leaf blades flat or involute, 3–15 × 0.2–0.4 cm, adaxial surface scabrous and pilose, abaxial surface glabrous, along middle vein and margins with glands in row. Panicle open, 6–15 × 3–6 cm; branch solitary, ascending or spreading. Spikelets green or dark green, oblong, 3–8 × 1.5–2 mm, 3–16-flowered, with glandular pedicels 3–6 mm. Glumes chartaceous, lanceolate, 1-veined, glandular along veins, lower glume ca. 1.6 mm, upper glume ca. 1.8 mm. Lemma ovate, apex obtuse, lateral veins nearly parallel, midrib glandular, lower lemma 1.5–2 mm. Palea subequal to its lemma, persistent, 2-keeled, along keels ciliolate or scabrous. Stamens 2 or 3; anthers 0.2–0.3 mm. Caryopsis red-brown, oblong or globose, ca. 0.5 mm in diam. Fl. and fr. Jul–Sep. 2n = 40.
Loosely tufted annual to 600 mm high, often geniculate. Leaf blade to 120 x to 5 mm; margins and midrib with crateriform glands. Inflorescence open or contracted, side branches usually less than 40 mm long; lowest branches not whorled, glands present or absent; pedicels stout. Spikelet 3-9 x 1.3-2.0 mm; lemmas and/or paleas breaking up from base upwards; glumes subequal, reaching 1/2 and more up lemma above; rachilla persistent; lemma 1.2-2.0 mm long, obtuse to acute; palea margins wide apart, keels scabrid; anthers 3, 0.3 mm long; caryopsis broadly oblong.
Much like no. 6 [Eragrostis cilianensis (All.) Janch.], glandular-warty on the lf-margins and to some extent elsewhere, but the lemmas without glands; sheaths usually pilose on the margins, sometimes also on the back, as well as at the summit; axils of the panicle-branches glabrous; spikelets more slender, 4–11 × 1.5–2 mm, 5–12(–20)-fld, the lemmas 1.5–2 mm; 2n=40, 80. Native of Europe, intr. in moist soil, waste land, gardens, and roadsides from N.S. and Vt. to Wis. and Io., s. to Ga., Tex., and Calif. (E. poaeoides)
Annual, loosely tufted (often geniculate), up to 0.6 m high. Leaf blades up to 120 mm long, up to 5 mm wide. Leaf margins with raised glands. Spikelets 3-19 mm long, 1.3-2.0 mm wide. Inflorescence open, side branches usually shorter than 40 mm, pedicels stout; spikelet with rhachilla persistent, lemmas and/or paleas breaking up from base upwards; glumes subequal; lemma obtuse; palea keels scabrid; anthers 3, 0.3 mm long. Caryopsis broadly oblong.
An annual grass. It forms loose tufts. It grows 45 cm high. The leaf blades are flat and up to 15 cm long. The flower panicle is oval and can be 4-30 cm long.
