Phleum boissieri

HABIT Annual; culms solitary, or caespitose. Culms erect; 8–60 cm long; 3–4 -noded. Lateral branches lacking. Ligule an eciliate membrane. Leaf-blades 1.5–7 cm long; 2–4.2 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle spiciform; linear, or oblong; tapering above and tapering below; 1.5–14 cm long; 0.3–0.6 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 lanceolate, or elliptic; laterally compressed; 2.7–3.4 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; exceeding apex of florets; recurved at apex. Lower glume oblong; 2.7–3.4 mm long; 1 length of upper glume; coriaceous; 1-keeled; 3 -veined. Lower glume primary vein ciliate. Lower glume lateral veins ribbed. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 0.2–0.4 mm long. Upper glume oblong; 2.7–3.4 mm long; 2 length of adjacent fertile lemma; coriaceous; 1-keeled; 3 -veined. Upper glume primary vein ciliate. Upper glume lateral veins ribbed. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 0.2–0.4 mm long.

FLORETS Fertile lemma ovate; 1.2–1.5 mm long; membranous; without keel; 5 -veined. Lemma surface pubescent; with clavate hairs. Lemma apex obtuse. Palea 1 length of lemma.

FLOWER Lodicules 2; membranous. Anthers 3; 1.2–1.5 mm long. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp; 0.8–1 mm long. Hilum punctiform.

DISTRIBUTION Asia-temperate: western Asia.

NOTES Aveneae. Fl Turk 1993.

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