Eragrostis elongata (Willd.) J. Jacq.

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.

Fujian, Guangdong, Hainan, Jiangxi.

* Open grasslands, moist places, roadsides; near sea level to 1000 m.

Poa elongata Willdenow, Enum. Pl. 1: 108. 1809.

Chile Central

Perennials, Terrestrial, not aquatic, Stems nodes swollen or brittle, Stems erect or ascending, Stems geniculate, decumbent, or lax, sometimes rooting at nodes, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes solid or spongy, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly basal, below middle of stem, Leaves mostly cauline, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath smooth, glabrous, Leaf sheath hairy at summi t, throat, or collar, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blades very narrow or filiform, less than 2 mm wide, Leaf blades 2-10 mm wide, Leaf blades mostly flat, Leaf blade margins folded, involute, or conduplicate, Leaf blades mostly glabrous, Leaf blades more or less hairy, Leaf blades scabrous, roughened, or wrinkled, Ligule present, Ligule a fringe of hairs, Inflorescence terminal, Inflorescence a dense slender spike-like panicle or raceme, branches contracted, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence densely corymbose, paniculate, or capitate, rays reduced or absent, Inflorescence branches more than 10 to numerous, Flowers bisexual, Spikelets pedicellate, Spikelets laterally compressed, Spikelet less than 3 mm wide, Spikelets with 3-7 florets, Spikelets with 8-40 florets, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disart iculating above the glumes, glumes persistent, Spikelets disarticulating beneath or between the florets, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes equal or subequal, Glumes equal to or longer than adjacent lemma, Glumes keeled or winged, Glumes 1 nerved, Lemmas thin, chartaceous, hyaline, cartilaginous, or membranous, Lemma similar in texture to glumes, Lemma 3 nerved, Lemma glabrous, Lemma apex acute or acuminate, Lemma awnless, Lemma margins thin, lying flat, Lemma straight, Palea present, well developed, Palea membranous, hyaline, Palea shorter than lemma, Palea 2 nerved or 2 keeled, Palea keels winged, scabrous, or ciliate, Stamens 2, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis ellipsoid, longitudinally grooved, hilum long-linear.

Eragrostis elongata là một loài thực vật có hoa trong họ Hòa thảo. Loài này được (Willd.) J.Jacq. mô tả khoa học đầu tiên năm 1813.