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Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Triticum boeoticum

HABIT Annual; caespitose. Culms 30–80 cm long. Culm-nodes pubescent. Leaf-sheath oral hairs ciliate. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Leaf-blades 2–4 mm wide. Leaf-blade surface pilose. Leaf-blade margins scaberulous.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; bilateral; 3–9 cm long. Rhachis fragile at the nodes; flattened; ciliate on margins. Spikelet packing broadside to rhachis. Rhachis internodes oblong; 3–4 mm long; falling with spikelet above.

Spikelets ascending; solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1–2 fertile florets; without rhachilla extension, or with diminished florets at the apex. Spikelets oblong; laterally compressed; 10–12 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose.

GLUMES Glumes similar; shorter than spikelet. Lower glume oblong; (4–)6–10 mm long; coriaceous; 2-keeled; 5–7 -veined. Lower glume surface glabrous, or pilose. Lower glume apex dentate; 2 -fid. Upper glume oblong; (4–)6–10 mm long; 0.8–0.9 length of adjacent fertile lemma; coriaceous; 2-keeled; 5–7 -veined. Upper glume lateral veins divergent at apex. Upper glume surface glabrous, or pilose. Upper glume apex dentate; 2 -fid.

FLORETS Fertile lemma elliptic; 10–12 mm long; coriaceous; keeled; 5 -veined. Lemma apex dentate; 2 -fid; acute; awned; 1 -awned. Principal lemma awn from a sinus; 30–60 mm long overall; limb scabrous. Palea readily splitting down midline; 2 -veined. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3; 4 mm long. Ovary with a fleshy appendage below style insertion; pubescent on apex.

FRUIT Caryopsis with adherent pericarp; ellipsoid; 6.5–8 mm long; hairy at apex. Embryo 0.2–0.3 length of caryopsis. Hilum linear; 1 length of caryopsis.

DISTRIBUTION Europe: southeastern and eastern. Asia-temperate: Caucasus and western Asia.

NOTES Triticeae. Fl Iraq.

ADDITIONAL CHARACTERS Spikelets 2-fld in all.

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