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.

Reitzia

HABIT Perennial. Culms erect, or decumbent; 15–30 cm long. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate.

INFLORESCENCE Monoecious; with male and female spikelets in the same inflorescence. Inflorescence composed of racemes; embraced at base by subtending leaf.

Racemes single.

Sexes mixed. Spikelets in pairs. Fertile spikelets pedicelled; 1 in the cluster. Male spikelets sessile; 1 in a cluster. Pedicels cuneate.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4.98–7.2 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes deciduous; exceeding apex of florets; firmer than fertile lemma. Lower glume ovate; 1.1 length of upper glume; coriaceous; without keels; 3 -veined. Lower glume surface without pits. Lower glume apex acuminate. Upper glume ovate; 1.3 length of adjacent fertile lemma; coriaceous; without keels; 3 -veined. Upper glume apex acute.

FLORETS Fertile florets female. Fertile lemma oblong; cartilaginous; without keel; wingless; 3 -veined. Lemma surface unwrinkled; without grooves. Lemma margins involute; covering most of palea. Lemma apex acute. Palea cartilaginous; 2 -veined; without keels.

FLOWER Lodicules 3. Anthers 3.

MALE Male spikelets distinct from female; lanceolate. Male spikelet glumes absent. Male spikelet lemma muticous.

DISTRIBUTION South America.

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