Triticum dicoccoides

HABIT Annual. Culms 80–130 cm long. Culm-nodes pubescent. Leaf-sheaths pilose. Leaf-sheath oral hairs ciliate. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Leaf-blades 3–10 mm wide. Leaf-blade surface puberulous; hairy adaxially, or abaxially, or on both sides.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; bilateral; 4–6(–10) cm long; 7–15 mm wide. Rhachis fragile at the nodes; flattened; pilose on surface; ciliate on margins. Rhachis hairs mainly at internode tip; 3–5 mm long. Spikelet packing broadside to rhachis. Rhachis internodes oblong; (3–)4–5 mm long; falling with spikelet above.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 12–17 mm long; falling entire; deciduous with accessory branch structures.

GLUMES Glumes similar; shorter than spikelet. Lower glume lanceolate; 10–15 mm long; 1 length of upper glume; coriaceous; 2-keeled; keeled all along; 5–9 -veined. Lower glume surface glabrous, or pubescent. Lower glume apex with a unilateral tooth. Upper glume oblong; 10–15 mm long; 0.9–1 length of adjacent fertile lemma; coriaceous; 2-keeled; keeled all along; 5–9 -veined. Upper glume lateral veins divergent at apex. Upper glume surface glabrous, or pubescent. Upper glume apex with a unilateral tooth.

FLORETS Fertile lemma elliptic; 10–15 mm long; coriaceous; without keel; 9–11 -veined. Lemma apex awned; 1 -awned. Principal lemma awn 100–120(–150) mm long overall. Palea 2 -veined. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped; 1 in number.

FLOWER Anthers 3. Ovary with a fleshy appendage below style insertion; pubescent on apex.

FRUIT Caryopsis with adherent pericarp; 9–11 mm long; hairy at apex. Hilum linear.

DISTRIBUTION Asia-temperate: western Asia.

NOTES Triticeae. Fl Turk 1993.

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