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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.
Echinopogon mckiei
HABIT Perennial; caespitose; clumped loosely. Rhizomes elongated. Culms erect, or geniculately ascending; 10–35 cm long; 2–4 -noded. Culm-internodes smooth, or retrorsely scabrous. Lateral branches lacking. Leaf-sheaths retrorsely scabrous; glabrous on surface, or pubescent. Ligule an eciliate membrane; 1.5 mm long; truncate. Leaf-blades 2–12 cm long; 2–3 mm wide. Leaf-blade surface smooth, or scaberulous; pubescent; hairy adaxially. Leaf-blade apex obtuse, or acute; muticous, or pungent.
INFLORESCENCE Inflorescence a panicle. Peduncle straight; 15–22 cm long; smooth, or retrorsely scabrous above.
Panicle capitate; oblong; 0.6–2 cm long; 0.6–1.2 cm wide.
Spikelets spreading; solitary. Fertile spikelets pedicelled. Pedicels oblong.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 2.5–3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus brief; pubescent.
GLUMES Glumes persistent; similar; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; 2.5–3.5 mm long; 1 length of upper glume; membranous, or chartaceous; 1-keeled; 1 -veined. Lower glume primary vein scabrous; ciliolate. Lower glume lateral veins absent. Lower glume surface pubescent. Lower glume hairs 0.6 mm long. Lower glume apex obtuse, or acute. Upper glume lanceolate; 2.5–3.5 mm long; 1 length of adjacent fertile lemma; membranous, or chartaceous; 1-keeled; 1 -veined. Upper glume primary vein scabrous; ciliolate. Upper glume lateral veins absent. Upper glume surface pubescent. Upper glume hairs 0.6 mm long. Upper glume apex obtuse, or acute.
FLORETS Fertile lemma lanceolate, or oblong; 2.5–3.5 mm long; cartilaginous; keeled; 5–7 -veined. Lemma apex dentate; 2 -fid; with lobes 0.3 mm long; acute; awned; 1 -awned. Principal lemma awn from a sinus; 1–3 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels smooth, or scaberulous; eciliate; adorned above.
FLOWER Anthers 3; 0.5–1 mm long. Ovary glabrous.
FRUIT Caryopsis with adherent pericarp; oblong; 1.5 mm long; glabrous. Hilum linear.
DISTRIBUTION Australasia: Australia.
NOTES Aveneae. CEH.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
