Poa huecu

HABIT Perennial; caespitose. Basal innovations intravaginal. Culms 30–50 cm long; 2–3 -noded. Leaf-sheaths smooth, or scaberulous. Ligule an eciliate membrane; 3–10 mm long; acute. Leaf-blades conduplicate; 8–15 cm long; 2–3 mm wide; stiff. Leaf-blade surface smooth, or scaberulous. Leaf-blade apex acute; pungent.

INFLORESCENCE Dioecious. Inflorescence a panicle.

Panicle contracted; linear; continuous, or interrupted; 7–10 cm long; 1 cm wide. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels scabrous; glabrous, or puberulous.

FERTILE SPIKELETS Spikelets comprising 2–3 fertile florets; with diminished florets at the apex. Spikelets ovate; laterally compressed; 4–5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 2.5–4.2 mm long; 0.75–0.9 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume primary vein scabrous. Lower glume apex acute. Upper glume ovate; 3–4.5 mm long; 0.75 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume apex acute.

FLORETS Fertile florets female. Fertile lemma ovate; elliptic in profile; 3.8–4.5 mm long; membranous; keeled; 5 -veined. Lemma midvein scabrous. Lemma surface glabrous. Lemma apex acute. Palea keels adorned above. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; membranous. Anthers 3; 2–2.5 mm long.

FRUIT Caryopsis with adherent pericarp; fusiform; 2.5 mm long; dark brown. Hilum punctiform.

MALE Male inflorescence similar to female. Male spikelets resembling female.

DISTRIBUTION South America: southern South America.

NOTES Poeae. Fl Pat 1995.

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