Digitaria sejuncta

HABIT Perennial. Culms 50–100 cm long; 4 -noded. Culm-nodes glabrous. Leaf-sheaths hirsute; with tubercle-based hairs. Ligule an eciliate membrane. Leaf-blades 20–30 cm long; 4–10 mm wide. Leaf-blade surface glabrous, or pilose; sparsely hairy.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 15–30; borne along a central axis; unilateral; 10–20 cm long. Central inflorescence axis 15–20 cm long. Rhachis angular. Spikelet packing distant. Raceme-bases brief, or filiform; 0–50 mm long.

Spikelets in pairs. Fertile spikelets pedicelled. Pedicels unequal.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2.5 mm long; falling entire.

GLUMES Glumes two; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.05 length of spikelet; hyaline; 0 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume ovate; 0.66 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 elliptic; 1 length of spikelet; membranous; 7 -veined; with unevenly spaced veins; pubescent; hairy between veins but central interspaces glabrous; acute. Fertile lemma elliptic; 2.5 mm long; cartilaginous; much thinner on margins; light brown; without keel. Lemma margins flat; covering most of palea. Lemma apex acute. Palea cartilaginous.

FLOWER Anthers 3.

DISTRIBUTION South America: Brazil.

NOTES Paniceae. Henrard 1995.

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