New! - Search other data sources for Pogononeura biflora

Help - Wrong Description?

Kew Data Sources

Kew's Herbarium Catalogue
ePIC - Electronic Plant Information Centre

External Data Sources

Note - this takes you off of our website
Use your browser's back button to return to this page

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.

Pogononeura biflora

HABIT Annual; caespitose. Culms geniculately ascending; 28–70 cm long. Leaves cauline. Ligule a fringe of hairs. Leaf-blades conduplicate; 2–12 cm long; 3–5 mm wide; glaucous. Leaf-blade venation distinct. Leaf-blade surface pilose; sparsely hairy; hairy adaxially. Leaf-blade margins cartilaginous; ciliate. Leaf-blade apex acute.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 12–25; borne along a central axis; unilateral; 1–6.5 cm long. Central inflorescence axis 12–28 cm long. Rhachis angular.

Spikelets appressed; solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension, or with diminished florets at the apex. Spikelets lanceolate; subterete; 5–6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.

GLUMES Glumes lower persistent, upper deciduous; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 4.5–5.1 mm long; 0.8–0.9 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 5.4–5.9 mm long; 1.8–2 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile florets appressed to rhachilla; imbricate to tip. Fertile lemma elliptic; 2.7–3.2 mm long; membranous; without keel; 3 -veined. Lemma midvein pubescent. Lemma lateral veins close to margins. Lemma margins ciliate (grey-green hairs). Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; 1 mm long overall; not or scarcely exserted from spikelet. Palea 2 -veined. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Anthers 3.

FRUIT Caryopsis with adherent pericarp; ellipsoid; dorsally compressed; plano-convex; 1.3–1.6 mm long.

DISTRIBUTION Africa: east tropical.

NOTES Eragrostideae. FTEA.

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