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Descriptions

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

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

Scribneria

HABIT Annual. Culms erect, or geniculately ascending; 7–30 cm long. Ligule an eciliate membrane. Leaf-blades filiform.

INFLORESCENCE Inflorescence composed of racemes.

Racemes single; bilateral. Rhachis semiterete. Spikelet packing broadside to rhachis. Rhachis internodes linear.

Spikelets sunken; solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; laterally compressed; 5–7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.

GLUMES Glumes collateral; persistent; exceeding apex of florets; firmer than fertile lemma. Lower glume linear; 1 length of upper glume; chartaceous; 1-keeled; 3 -veined. Lower glume lateral veins ribbed. Lower glume surface without pits. Lower glume apex acute. Upper glume linear; 1.2 length of adjacent fertile lemma; chartaceous; 1-keeled; 3 -veined. Upper glume lateral veins ribbed. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; membranous; keeled; wingless; 3 -veined. Lemma surface unwrinkled; without grooves. Lemma apex dentate; 2 -fid; awned.

FLOWER Anthers 1. Ovary glabrous.

DISTRIBUTION North America.

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