Chlorocalymma cryptacanthum Clayton

Tufted annual; culms 30–60 cm. high, erect or ascending.. Leaf-blades broadly linear, 4–10 cm. long, 3–8 mm. wide.. Inflorescence composed of 2–3 pseudo-racemes distant along a central axis; pseudo-racemes 1–1.5 cm. long, enclosing ± 12 involucres, these densely imbricate and each subtending 1–2 spikelets.. Spikelets 5.5–7 mm. long; upper glume lanceolate, 0.7–1.2 mm. long; lower lemma herbaceous, laterally 2-keeled, the keels narrowly winged above, acute; upper lemma lanceolate.. Fig. 153.