Sporobolus domingensis

HABIT Perennial; caespitose. Culms erect; 50–100 cm long; 3–5 -noded. Culm-internodes smooth. Leaf-sheaths without keel; glabrous on surface. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs; 1–1.5 mm long. Collar glabrous. Leaf-blades flat; 3–6 mm wide. Leaf-blade surface scabrous; rough adaxially. Leaf-blade margins scabrous. Leaf-blade apex attenuate.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; lanceolate; 10–15 cm long; contracted about secondary branches. Primary panicle branches appressed, or ascending; not whorled, or whorled at lower nodes.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 2 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes deciduous; reaching apex of florets. Lower glume lanceolate; 0.5 length of upper glume; membranous; without keels. Lower glume apex acute. Upper glume elliptic; 1 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma ovate; 2 mm long; membranous; without keel; 1 -veined. Lemma apex acute. Palea 1 length of lemma; 2 -veined. Palea keels approximate.

FRUIT Caryopsis with free soft pericarp.

DISTRIBUTION North America: southeast USA and Mexico. South America: Caribbean.

NOTES Eragrostideae. N Amer Fl 1994.

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