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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.
Aristida personata
HABIT Perennial; caespitose. Culms robust; 60–120 cm long. Culm-internodes smooth; distally glabrous. Lateral branches fastigiate. Leaf-sheath oral hairs lacking, or ciliate. Ligule a fringe of hairs; 0.5–1 mm long. Collar glabrous. Leaf-blades involute; 8–16 cm long; 1–2.5 mm wide. Leaf-blade surface scabrous; rough adaxially.
INFLORESCENCE Inflorescence a panicle.
Panicle open; linear; 10–30 cm long; 1–2 cm wide. Primary panicle branches 2–5 cm long; bearing spikelets almost to the base.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 9.5–11.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; pubescent; acute.
GLUMES Glumes persistent; similar; shorter than spikelet, or reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; 6–11.5 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute to setaceously attenuate. Upper glume lanceolate; 6–11.5 mm long; 0.6–1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute to setaceously attenuate.
FLORETS Fertile lemma lanceolate; subterete; 9.5–10.5 mm long; coriaceous; pallid and light brown; mottled with last colour; without keel; 3 -veined. Lemma midvein without distinctive roughness to scabrous. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn with 12–25 mm long limb; without a column; persistent. Lateral lemma awns 13–23 mm long; shorter than principal. Palea 0.2 length of lemma; without keels.
FLOWER Anthers 3.
FRUIT Caryopsis with adherent pericarp; 6–8.5 mm long. Hilum linear; 0.5 length of caryopsis.
DISTRIBUTION Australasia: Australia.
NOTES Aristideae. Simon 1993.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
