Poa iberica

HABIT Perennial; culms solitary, or caespitose. Culms geniculately ascending; 70–150 cm long; 2.5–5 mm diam. Culm-internodes elliptical in section; smooth, or scaberulous; distally glabrous. Lateral branches lacking. Leaf-sheaths tubular for much of their length; with 0.33–0.66 of their length closed; keeled, or with winged keel. Ligule an eciliate membrane; 2–3 mm long; obtuse. Leaf-blades 3–8 mm wide. Leaf-blade surface scabrous. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; oblong; continuous, or interrupted; 10–15 cm long. Primary panicle branches 6–12 cm long. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 3–4 fertile florets; with diminished florets at the apex. Spikelets oblong, or ovate; laterally compressed; 8–9 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes smooth; glabrous. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 1.5 mm long; 0.5 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 3 mm long; 0.75 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma ovate; elliptic in profile; 3.5–5.5 mm long; membranous; keeled; 5 -veined. Lemma midvein scabrous. Lemma lateral veins distinct. Lemma surface pubescent; hairy between veins. Lemma apex acute. Palea 1 length of lemma. Palea keels scabrous; adorned above; with 0.5 of their length adorned. Palea surface smooth. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; membranous. Anthers 3.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION Asia-temperate: Caucasus.

NOTES Poeae. Fl USSR 1996.

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