Digitaria doellii

HABIT Perennial; caespitose. Cataphylls evident. Culms 45–80 cm long; 2 -noded. Culm-nodes glabrous. Leaf-sheaths glabrous on surface, or pubescent. Leaf-sheath auricles erect. Ligule an eciliate membrane; 2–3 mm long; brown. Leaf-blades 5–25 cm long; 4–7 mm wide. Leaf-blade surface glabrous, or pilose; hairy adaxially. Leaf-blade margins cartilaginous; crenate.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 8–16; digitate; unilateral; 8–12 cm long. Central inflorescence axis 7–12 cm long. Rhachis angular.

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; 2.75 mm long; falling entire.

GLUMES Glumes two; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.6 mm long; 0.2 length of spikelet. Upper glume lanceolate; 2.25 mm long; 0.8 length of spikelet; membranous; without keels; 3 -veined. Upper glume surface pubescent; hairy between veins. 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 equidistant veins; pubescent; hairy between veins but central interspaces glabrous; acute. Fertile lemma elliptic; 2.75 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.