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Descriptions

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

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

Pommereulla cornucopiae

HABIT Perennial. Stolons present. Basal innovations flabellate. Culms 5–15 cm long. Ligule a fringe of hairs. Leaf-blades flat, or conduplicate; 2.5–8 cm long; 2–3 mm wide. Leaf-blade apex obtuse.

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

Racemes 1; single; unilateral; 2–8 cm long. 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 (turbinate); dorsally compressed; 7–9 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Floret callus elongated; 3 mm long; pubescent; pungent.

GLUMES Glumes persistent; dissimilar; 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 apex acuminate. Upper glume lanceolate; membranous; without keels; 3 -veined. Upper glume apex acuminate.

FLORETS Basal sterile florets similar; barren; without significant palea; attached to and deciduous with the fertile. Lemma of lower sterile floret similar to fertile lemma; elliptic; 6 mm long; coriaceous; 7–9 -veined; pubescent; lobed; 4 -fid; awned. Awn of lower sterile floret dorsal; 5–6 mm long. Fertile lemma elliptic; 6 mm long; coriaceous; without keel; 7–9 -veined. Lemma surface pubescent. Lemma apex lobed; 3 -fid; with outer lobes longer; with ovate lobes; incised 0.4 of lemma length; awned; 1 -awned. Principal lemma awn dorsal; arising 0.3 way up back of lemma; 5–6 mm long overall. Palea 2 -veined. Palea keels ciliolate. Apical sterile florets 1 in number; barren; elliptic; 3 mm long. Apical sterile lemmas pubescent; awned; 1 -awned. Apical sterile lemma awns dorsal; 3–4 mm long.

FLOWER Anthers 2–3; 0.25 mm long.

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

DISTRIBUTION Asia-tropical: India.

NOTES Cynodonteae. WDC.

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