Sporobolus nudiramus

HABIT Perennial; caespitose. Basal innovations intravaginal. Culms erect; 56–100 cm long; 2 -noded. Leaf-sheaths longer than adjacent culm internode; pilose; outer margin hairy. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs; 0.2 mm long. Leaf-blades 8.5–25.5 cm long; 4–7 mm wide. Leaf-blade surface pilose; densely hairy; hairy adaxially. Leaf-blade margins ciliate.

INFLORESCENCE Inflorescence a panicle. Peduncle 50 cm long.

Panicle open; lanceolate; 41 cm long; 12 cm wide. Primary panicle branches whorled at most nodes; 1.5–10 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; subterete; 2.3–2.8 mm long; 0.6–1.2 mm wide; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes deciduous; reaching apex of florets. Lower glume lanceolate; 0.9–1.6 mm long; 0.5 length of upper glume; hyaline; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2.4–2.6 mm long; 1 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 2–2.5 mm long; 0.4–0.5 mm wide; membranous; without keel; 1 -veined. Lemma apex acute. Palea readily splitting down midline; 2–2.5 mm long; 2 -veined. Palea keels approximate.

FRUIT Caryopsis with free soft pericarp; ovoid; laterally compressed; 1.8–2.2 mm long; dark brown; striate. Embryo 0.4–0.5 length of caryopsis.

DISTRIBUTION South America: Brazil.

NOTES Eragrostideae. Boechat & Longhi-Wag 2002.

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