Dissanthelium rauhii

HABIT Perennial; caespitose. Culms erect; 6–9 cm long. Leaf-sheaths smooth. Ligule an eciliate membrane; 4–5 mm long. Leaf-blades ascending; conduplicate; 1.5–3.5 cm long; 1–2 mm wide; coriaceous. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade apex obtuse.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; oblong; 3–4 cm long; 0.8–1.5 cm wide. Primary panicle branches appressed, or ascending.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 2.5–2.6 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.3 mm long.

GLUMES Glumes persistent; similar; reaching apex of florets; thinner than fertile lemma; shiny. Lower glume ovate; 2.5–2.6 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume apex acute. Upper glume ovate; 2.5–2.6 mm long; 1–1.2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma ovate; 2.1–2.2 mm long; chartaceous; keeled; 3 -veined. Lemma surface pubescent. Lemma apex acute. Palea keels ciliolate.

FLOWER Anthers 3; 0.6–0.8 mm long. Ovary glabrous.

FRUIT Endosperm farinose.

DISTRIBUTION South America: western South America.

NOTES Aveneae. Swallen.

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