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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.
Ectrosia schultzii
HABIT Perennial; caespitose. Culms erect; 25–60 cm long; 2–3 -noded. Lateral branches lacking. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs lacking, or ciliate. Ligule a fringe of hairs. Leaf-blades erect; flat, or involute, or convolute; 10–23 cm long; 2–3.5 mm wide; stiff. Leaf-blade surface scaberulous; rough adaxially; glabrous; hairless except near base. Leaf-blade apex attenuate; filiform.
INFLORESCENCE Inflorescence a panicle.
Panicle contracted; oblong; interrupted; 5–17 cm long; 1–2 cm wide. Primary panicle branches ascending, or spreading; 1 -nate; 2–3 cm long. Panicle axis glabrous, or pilose.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels linear; glabrous, or ciliate.
FERTILE SPIKELETS Spikelets comprising 1–3 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 7–9 mm long; 1–1.5 mm wide; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes 1.3–2 mm long.
GLUMES Glumes deciduous; similar; shorter than spikelet. Lower glume lanceolate; 1.3–2 mm long; 0.6–0.7 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2–3 mm long; 0.6–0.8 length of adjacent fertile lemma; membranous; 1-keeled; 1–3 -veined. Upper glume lateral veins absent, or distinct. Upper glume apex acute.
FLORETS Fertile florets divergent; increasing in size upwards; with the lowest dissimilar. Lowest fertile lemma lanceolate; 0.8 length of adjacent lemma; mucronate. Fertile lemma lanceolate; dorsally straight along back; 3.5–4 mm long; membranous; keeled; 3 -veined. Lemma midvein scaberulous. Lemma surface asperulous. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 3–6 mm long overall. Palea 2–2.5 mm long; 2 -veined. Palea keels ciliolate. Apical sterile florets 4–5 in number; barren; separate; rudimentary. Apical sterile lemmas awned; 1 -awned. Apical sterile lemma awns 10–12 mm long.
FLOWER Anthers 3; 0.3–0.5 mm long.
FRUIT Caryopsis with adherent pericarp; 1 mm long.
DISTRIBUTION Australasia: Australia.
NOTES Eragrostideae. CEH.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
