Arundo plinii

HABIT Perennial. Rhizomes elongated. Culms erect; reed-like; 100–200 cm long. Culm-internodes hollow. Culm-nodes pubescent. Lateral branches lacking. Leaves cauline. Leaf-sheaths glabrous on surface. Ligule a ciliolate membrane; 0.5 mm long. Leaf-blades 15–60 cm long; 5–30 mm wide. Leaf-blade surface smooth; glabrous. Leaf-blade apex attenuate.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; lanceolate; 20–70 cm long. Primary panicle branches profusely divided.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1–2 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 8–10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; bearded; hairy in a ring above; obtuse.

GLUMES Glumes persistent; similar; shorter than spikelet; similar to fertile lemma in texture. Lower glume lanceolate; 7–9 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume surface glabrous. Lower glume apex acuminate. Upper glume lanceolate; 7–9 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 3–5 -veined. Upper glume surface glabrous. Upper glume apex acuminate.

FLORETS Fertile lemma lanceolate; 7–9 mm long; membranous; without keel; 5 -veined. Lemma surface villous; hairy below. Lemma hairs 4 mm long. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; 1.5–2.5 mm long overall. Palea 0.5–0.7 length of lemma; 2 -veined.

FLOWER Lodicules 2. Anthers 3. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Europe: southeastern.

NOTES Arundineae. Fl Turk.

ADDITIONAL CHARACTERS Callus hairs spreading.

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