Phleum paniculatum

HABIT Annual; culms solitary, or caespitose. Culms erect, or geniculately ascending; 5–30(–55) cm long; 3–5 -noded. Ligule an eciliate membrane; 2.5–7 mm long; obtuse. Leaf-blades 2–19 cm long; 2–9 mm wide. Leaf-blade margins ciliate. Leaf-blade apex obtuse, or abruptly acute.

INFLORESCENCE Inflorescence a panicle; subtended by an inflated leaf-sheath.

Panicle spiciform; linear; 1–12 cm long; 0.4–0.7 cm wide. Primary panicle branches accrescent to a central axis.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets cuneate; laterally compressed; 1.5–2.8 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; exceeding apex of florets. Lower glume obovate, or cuneate; 1.5–3.8 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume primary vein scabrous; eciliate, or ciliolate. Lower glume surface scabrous. Lower glume margins ciliate. Lower glume apex truncate; awned; 1 -awned. Lower glume awn 0.3–0.6 mm long. Upper glume obovate, or cuneate; 1.5–2.8 mm long; 1.5 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous; ciliolate. Upper glume surface scabrous. Upper glume apex truncate; awned; 1 -awned. Upper glume awn 0.3–0.6 mm long.

FLORETS Fertile lemma oblong; 1.5 mm long; membranous; without keel; 5 -veined. Lemma surface pubescent. Lemma apex obtuse. Palea 1 length of lemma.

FLOWER Lodicules 2; membranous. Anthers 3; 0.5 mm long. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp; 1–1.1 mm long. Hilum punctiform.

DISTRIBUTION Europe: central, southwestern, southeastern, and eastern. Asia-temperate: Soviet Middle Asia, Caucasus, western Asia, China, and eastern Asia. Asia-tropical: India.

NOTES Aveneae. Fl Turk 1993.

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