| Note - this takes you off
of our website |
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.
Phalaris angusta
HABIT Annual; caespitose. Culms 70–150 cm long. Ligule an eciliate membrane. Leaf-blades 10–20 cm long; 6–10 mm wide.
INFLORESCENCE Inflorescence a panicle.
Panicle spiciform; linear; 2.5–17 cm long; 0.6–1.5 cm wide.
Spikelets appressed; solitary. Fertile spikelets sessile.
FERTILE SPIKELETS Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; laterally compressed; compressed strongly; 2.9–5.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume elliptic; 2.9–5.5 mm long; 1 length of upper glume; chartaceous; 1-keeled; winged on keel; winged narrowly; winged above; 3–5 -veined. Lower glume primary vein scabrous. Lower glume surface scabrous; rough on veins. Lower glume apex truncate, or obtuse. Upper glume elliptic; 2.9–5.5 mm long; 1.3–1.5 length of adjacent fertile lemma; chartaceous; 1-keeled; winged on keel; winged above; 3–5 -veined. Upper glume primary vein scabrous. Upper glume surface scabrous; rough on veins. Upper glume apex truncate, or obtuse.
FLORETS Basal sterile florets similar; barren; without significant palea; attached to and deciduous with the fertile. Lemma of lower sterile floret linear; 0.7–1.5 mm long; 0.33 length of fertile lemma; glabrous. Fertile lemma elliptic; laterally compressed; 2.2–3.8 mm long; cartilaginous; shiny; keeled; 5 -veined. Lemma surface pubescent; hairy all along. Lemma apex acute. Palea cartilaginous; 2 -veined; without keels. Palea surface pubescent; hairy on back.
FLOWER Lodicules 2; membranous. Anthers 3. Ovary glabrous.
FRUIT Caryopsis with adherent pericarp; 1.4–1.6 mm long. Hilum linear.
DISTRIBUTION Africa: south and western Indian ocean. Australasia: Australia. North America: southwest USA, south-central USA, southeast USA, and Mexico. South America: western South America, Brazil, and southern South America.
NOTES Aveneae. Anderson.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
