GrassBase - The Online World Grass Flora

Descriptions

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

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

Triscenia

HABIT Perennial. Culms 20–50 cm long. Ligule a ciliolate membrane. Leaf-blades filiform.

INFLORESCENCE Inflorescence a panicle.

Panicle open.

Spikelets in pairs. Fertile spikelets pedicelled; 2 in the cluster.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 3–3.5 mm long; falling entire.

GLUMES Glumes reaching apex of florets; thinner than fertile lemma. Lower glume ovate; membranous; without keels; 3 -veined. Lower glume surface without pits. Lower glume apex acute. Upper glume lanceolate; membranous; without keels; 5 -veined. Upper glume apex acuminate.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; membranous; 3 -veined; acuminate. Fertile lemma elliptic; chartaceous; without keel; wingless. Lemma surface unwrinkled; without grooves. Lemma apex acute. Palea chartaceous.

DISTRIBUTION South America.

Please cite this publication as detailed in How to Cite Version: 27th January 2014.