Digitaria dolleryi

Description

HABIT Annual.Culms erect,or decumbent;20–40 cm long;3–5 -noded.Ligule an eciliate membrane;0.5–0.8 mm long.Leaf-blades 1–2.5 cm long;1–2 mm wide.Leaf-blade surface glabrous. INFLORESCENCE Inflorescence composed of racemes. Racemes 2–5;borne along a central axis;unilateral;2–5 cm long;bearing 22–26 fertile spikelets on each.Central inflorescence axis 1–3 cm long.Rhachis narrowly winged;angular. Spikelets in pairs.Fertile spikelets pedicelled;2 in the cluster.Pedicels unequal;1–5 mm long;tip cupuliform. FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets;1 fertile florets;without rhachilla extension.Spikelets elliptic;dorsally compressed;2–2.3 mm long;0.9–1.2 mm wide;falling entire. GLUMES Glumes shorter than spikelet;thinner than fertile lemma.Lower glume ovate;0.7 mm long;0.33 length of spikelet;hyaline;0 -veined.Lower glume lateral veins absent.Lower glume apex truncate.Upper glume oblong;1.9–2 mm long;0.9 length of spikelet;membranous;without keels;3 -veined.Upper glume surface pubescent.Upper glume apex acute. FLORETS Basal sterile florets barren;without significant palea.Lemma of lower sterile floret oblong;1.8–2.1 mm long;0.9 length of spikelet;membranous;7 -veined;pubescent;hairy between veins but central interspaces glabrous;ciliate on margins.Fertile lemma lanceolate;1.8–2.1 mm long;cartilaginous;much thinner on margins;without keel.Lemma margins flat;covering most of palea.Lemma apex acute,or acuminate.Palea 1 length of lemma;cartilaginous.