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FOC | Family List | FOC Vol. 22 | Poaceae | Alloteropsis

2. Alloteropsis cimicina (Linnaeus) Stapf, Prain, Fl. Trop. Africa. 9: 487. 1919.

臭虫草 chou chong cao

Milium cimicinum Linnaeus, Mant. Pl. 184. 1771; Axo-nopus cimicinus (Linnaeus) P. Beauvois; Panicum cimicinum (Linnaeus) Retzius; Urochloa cimicina (Linnaeus) Kunth.

Annual. Culms tufted, ascending, up to 60 cm tall. Leaf sheaths tuberculate-hispid; leaf blades lanceolate, cordate, 3–10 × 1–2 cm, abaxial surface pectinate-setose along margins and veins, adaxial surface glabrous; ligule ca. 1 mm, ciliate. Inflorescence digitate; racemes 4–6, 10–15 cm, narrowly ascending, rachis glabrous, bare of spikelets in the lower part, spikelets paired or single. Spikelets elliptic, 3.5–5.5 mm, pale green; lower glume ovate-lanceolate, ca. 2 mm, acuminate; upper glume papery, elliptic, shiny, margins ciliate with silky white or pinkish hairs, apex caudate; lower lemma similar to upper glume but thicker and glabrous; upper lemma ovate-elliptic, 3/5 spikelet length, obtuse with a fine scabrous 2–3 mm awn; upper palea papillose with swollen lacrimiform hairs. Anthers purple, ca. 1 mm. Fl. Sep. 2n = 36.

Weedy places, dry open forest. Hainan [Cambodia, India, Indonesia, Malaysia, Myanmar, New Guinea, Sri Lanka, Thailand; Africa, Australia, Pacific Islands].


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