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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 gulliveri
HABIT Annual; caespitose. Culms erect, or geniculately ascending; 15–40 cm long; 2–4 -noded. Leaf-sheaths glabrous on surface, or pilose. Leaf-sheath oral hairs bearded. Ligule a fringe of hairs. Leaf-blades flat, or convolute; 5–12 cm long; 1–1.5 mm wide; stiff. Leaf-blade surface pilose; moderately hairy; hairy adaxially. Leaf-blade apex attenuate.
INFLORESCENCE Inflorescence a panicle.
Panicle contracted; interrupted; 3–15 cm long; 1–4 cm wide; contracted about primary branches. Primary panicle branches spreading, or reflexed; 0.5–2 cm long; bearing spikelets almost to the base. Panicle branches pilose.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels linear; ciliate.
FERTILE SPIKELETS Spikelets comprising 1–4 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 4–5.5 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes pubescent. Floret callus pubescent; acute.
GLUMES Glumes deciduous; similar; shorter than spikelet. Lower glume lanceolate; 1.5–2.5 mm long; 0.75–0.8 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume margins ciliolate. Lower glume apex acute, or acuminate. Upper glume lanceolate; 2–3 mm long; 0.6–0.7 length of adjacent fertile lemma; membranous; 1-keeled; 1–3 -veined. Upper glume primary vein scaberulous. Upper glume margins ciliolate. Upper glume apex acute, or acuminate.
FLORETS Fertile florets recurved at tip. Fertile lemma oblong; 3–5 mm long; coriaceous; keeled; 5–7 -veined. Lemma midvein ciliate. Lemma lateral veins ribbed. Lemma surface pubescent. Lemma margins ciliate. Lemma apex acuminate, or setaceously attenuate; mucronate. Palea 2 -veined. Palea keels winged; narrowly winged; ciliolate. Apical sterile florets 3–4 in number; barren; separate; rudimentary. Apical sterile lemmas awned. Apical sterile lemma awns 3–4 mm long.
FLOWER Lodicules 2; cuneate; fleshy. 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.
