Digitaria breedlovei

HABIT Annual; caespitose. Culms 25–50 cm long. Culm-internodes distally glabrous. Leaf-sheaths hirsute; with tubercle-based hairs. Ligule an eciliate membrane; 0.7–1 mm long; truncate. Leaf-blades 4–10 cm long; 2–3 mm wide. Leaf-blade surface hirsute; with tubercle-based hairs.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 4–5; digitate; unilateral; 6–8 cm long. Rhachis angular; 0.2–0.3 mm wide; pilose on surface. Rhachis hairs 1–2 mm long.

Spikelets appressed; in threes. Fertile spikelets pedicelled. Pedicels unequal; 1.3–1.5 mm long; scabrous.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 1.3–1.5 mm long; falling entire.

GLUMES Glumes one the lower absent or obscure, or both absent or obscure; shorter than spikelet; thinner than fertile lemma. Upper glume when present ovate; 0–0.4 mm long; 0–0.25 length of spikelet; hyaline; without keels. Upper glume apex acute.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; 0.9 length of spikelet; membranous; 5 -veined; pubescent; acute. Fertile lemma elliptic; 1.3–1.5 mm long; cartilaginous; much thinner on margins; light brown; without keel. Lemma margins flat; covering most of palea. Palea cartilaginous.

FLOWER Anthers 3; 0.5 mm long.

DISTRIBUTION North America: Mexico.

NOTES Paniceae. Pohl & Davidse 1994.

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