Poa lilloi

HABIT Perennial; caespitose. Culms erect, or geniculately ascending; 8–20 cm long; 2 -noded. Lateral branches lacking. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 0.5–3 mm long; scaberulous on abaxial surface; truncate. Leaf-blades filiform; involute; 1–5 cm long; 1–2 mm wide. Leaf-blade surface smooth, or scaberulous; rough adaxially; glabrous. Leaf-blade margins scaberulous. Leaf-blade apex acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 2–4 cm long; 1.3–2 cm wide. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels scabrous.

FERTILE SPIKELETS Spikelets comprising 3 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 4–4.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes smooth. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2.3–2.7 mm long; 0.9 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 2.8–3 mm long; 0.9 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma ovate; elliptic in profile; 3–3.5 mm long; membranous; keeled; 5 -veined. Lemma midvein scabrous. Lemma surface scaberulous; rough on veins; glabrous. Lemma apex acute.

FLOWER Lodicules 2; membranous. Anthers 3.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION South America: western South America and southern South America.

NOTES Poeae. Tovar 1995.

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