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Descriptions

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

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

Aegilops sharonensis

HABIT Annual; caespitose; clumped loosely. Culms erect; 40–100 cm long. Leaf-sheath oral hairs lacking. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Leaf-blades flat, or involute; 10–20 cm long; 4–5 mm wide. Leaf-blade surface glabrous.

INFLORESCENCE Inflorescence composed of racemes; not deciduous as a whole.

Racemes 1; single; linear; bilateral; 7–13 cm long; bearing 7–15 fertile spikelets on each. Rhachis fragile at the nodes. Spikelet packing broadside to rhachis. Rhachis internodes oblong; falling with spikelet above.

Spikelets solitary. Fertile spikelets sessile.

STERILE SPIKELETS Basal sterile spikelets rudimentary; 1–2 in number.

FERTILE SPIKELETS Spikelets comprising 3–5 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 8–13 mm long; falling entire; deciduous with accessory branch structures.

GLUMES Glumes similar; shorter than spikelet. Lower glume oblong; 6–7 mm long; 1 length of upper glume; coriaceous; without keels; 6–7 -veined. Lower glume lateral veins thickened; ribbed; parallel at apex. Lower glume surface scabrous. Lower glume apex dentate; 2 -fid. Upper glume oblong; 6–7 mm long; 0.75 length of adjacent fertile lemma; coriaceous; without keels; 6–7 -veined. Upper glume lateral veins thickened; ribbed; parallel at apex. Upper glume surface scabrous. Upper glume apex dentate; 2 -fid.

FLORETS Fertile lemma elliptic; 8–11 mm long; coriaceous; keeled; keeled above; 5 -veined. Lemma apex dentate; 2 -fid; awned, or awned only on distal spikelets; 1 -awned. Principal lemma awn from a sinus; 30–80 mm long overall. Palea 2 -veined. Palea keels scaberulous. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2. Ovary pubescent on apex.

FRUIT Caryopsis with adherent pericarp; hairy at apex. Disseminule comprising a rhachis internode.

DISTRIBUTION Asia-temperate: western Asia.

NOTES Triticeae. Fl Pal 1997.

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