2. Eragrostis elongata (Willdenow) J. Jacquin, Ecl. Gram. Rar. 3. 1813.
双药画眉草 shuang yao hua mei cao
Poa elongata Willdenow, Enum. Pl. 1: 108. 1809.
Perennial. Culms erect, loosely tufted, 20–90 cm tall, 0.5–1 mm in diam., 2–4-noded. Leaf sheaths usually shorter than internodes, glabrous; ligules 0.3–0.4 mm; leaf blades flat to involute, adaxial surface scabrous, sometimes hairy below, 5–21 cm × 1–3 mm. Panicle spicate to narrowly ovate, 5–30 × 1–4 cm; branches appressed or diverging up to 80° from the rachises with spikelets at base. Spikelets stramineous to greenish or light brown, 3–12(–20) × 1.5–2.5 mm, 6–25-flowered; subsessile or with a very short pedicel, rachilla fragile. Glumes linear-lanceolate to lanceolate, 1-veined, 0.8–2 mm. Lower lemmas lanceolate to ovate, 1.3–2.2 mm. Palea shorter and narrower than the lemmas, hyaline, 1.1–1.7 mm, ciliolate along keel. Stamens 2; anthers 0.2–0.3 mm. Caryopsis cinnamon, ovoid-ellipsoid, 0.4–0.7 mm, smooth to finely reticulate.
* Open grasslands, moist places, roadsides; near sea level to 1000 m. Fujian, Guangdong, Hainan, Jiangxi.