Digitaria sabulicola

HABIT Annual; caespitose. Culms erect; 20–40 cm long; 5 -noded. Culm-nodes bearded. Leaf-sheaths hirsute. Ligule an eciliate membrane. Leaf-blades 5 cm long; 1 mm wide. Leaf-blade surface pubescent; densely hairy.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 3–4; digitate; unilateral; 3–6 cm long. Central inflorescence axis 1–2 cm long. Rhachis narrowly winged; with sharp-edged midrib; angular. Raceme-bases pubescent.

Spikelets in pairs. Fertile spikelets pedicelled; 2 in the cluster.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; acuminate; 2.25 mm long; 0.5 mm wide; falling entire.

GLUMES Glumes one the lower absent or obscure; shorter than spikelet; thinner than fertile lemma. Upper glume elliptic; 0.9 length of spikelet; membranous; without keels; 3 -veined. Upper glume surface scabrous; rough on veins; pubescent; hairy between veins. Upper glume margins pubescent.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; 1 length of spikelet; membranous; 7 -veined; with equidistant veins; puberulous; hairy between veins; pubescent on margins. Fertile lemma elliptic; 2 mm long; cartilaginous; much thinner on margins; yellow; without keel. Lemma margins flat; covering most of palea. Palea cartilaginous.

DISTRIBUTION South America: Brazil.

NOTES Paniceae. Henrard 2004.

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