Chikusichloa aquatica

HABIT Perennial; caespitose. Rhizomes short. Culms erect; 90–150 cm long; 3–6 mm diam.; 5–7 -noded. Leaves cauline. Ligule an eciliate membrane, or a ciliolate membrane; 1.5–2.5 mm long; truncate. Leaf-blades 24–50 cm long; 6–12 mm wide. Leaf-blade surface scabrous; rough on both sides. Leaf-blade apex attenuate.

INFLORESCENCE Inflorescence a panicle; exserted, or embraced at base by subtending leaf.

Panicle open; elliptic, or oblong; 40–65 cm long; 6–9 cm wide. Primary panicle branches 1–5 -nate; 4–14 cm long; bearing spikelets almost to the base. Panicle branches smooth, or scaberulous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; compressed slightly; 7–11 mm long; falling entire. Spikelet callus linear; 4–7 mm long.

GLUMES Glumes both absent or obscure.

FLORETS Fertile lemma lanceolate; 3–4 mm long; membranous; without keel; 5 -veined. Lemma midvein scaberulous. Lemma lateral veins ribbed. Lemma surface scaberulous; rough on veins. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 4–6 mm long overall; limb scabrous. Palea 0.8 length of lemma; 2–3 -veined; without keels.

FLOWER Lodicules 2. Anthers 1; 1.2–1.5 mm long.

FRUIT Caryopsis with adherent pericarp; ellipsoid; 2–2.5 mm long.

DISTRIBUTION Asia-temperate: China and eastern Asia.

NOTES Oryzeae. Koyama.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.