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.

Pommereulla

HABIT Perennial. Stolons present. Culms 5–15 cm long. Ligule a fringe of hairs.

INFLORESCENCE Inflorescence composed of racemes; embraced at base by subtending leaf.

Racemes single; unilateral. Rhachis angular.

Spikelets solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1–2 basal sterile florets; 2–3 fertile florets; with diminished florets at the apex. Spikelets cuneate; dorsally compressed; 7–9 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes definite. Floret callus elongated; pubescent; pungent.

GLUMES Glumes persistent; reaching apex of florets; thinner than fertile lemma; gaping. Lower glume lanceolate; 0.5 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface without pits. Lower glume apex acuminate. Upper glume lanceolate; membranous; without keels; 3 -veined. Upper glume apex acuminate.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; coriaceous; 7–9 -veined; awned. Fertile lemma elliptic; coriaceous; without keel; wingless; 7–9 -veined. Lemma surface unwrinkled; without grooves; pubescent. Lemma apex lobed; 3 -fid; incised 0.4 of lemma length; awned; 1 -awned. Principal lemma awn dorsal. Palea 2 -veined. Palea keels ciliolate. Apical sterile florets 1 in number; barren; elliptic. Apical sterile lemmas awned.

FLOWER Anthers 2–3.

FRUIT Caryopsis with free soft pericarp; obovoid. Embryo 0.75 length of caryopsis. Hilum punctiform.

DISTRIBUTION Tropical Asia.

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