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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 strigosa
HABIT Perennial; caespitose. Culms 50–120 cm long; 3–6 -noded. Culm-internodes scaberulous; distally glabrous. Lateral branches sparse. Leaf-sheaths longer than adjacent culm internode; striately veined; scaberulous, or antrorsely scabrous. Leaf-sheath oral hairs pubescent. Ligule a fringe of hairs; 0.5–1 mm long. Collar glabrous. Leaf-blades 9–18 cm long; 2–3 mm wide. Leaf-blade surface scabrous; rough on both sides.
INFLORESCENCE Inflorescence a panicle.
Panicle contracted; linear; 16–36 cm long; 1.5–3 cm wide.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 8.5–12 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; pubescent; acute.
GLUMES Glumes persistent; similar; reaching apex of florets, or exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 6–10 mm long; 0.8 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface smooth to scabrous. Lower glume apex acute to setaceously attenuate. Upper glume lanceolate; 7–12 mm long; 0.8–1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex emarginate, or acute; muticous, or mucronate.
FLORETS Fertile lemma lanceolate; subterete; 8.5–12 mm long; coriaceous; without keel; 3 -veined. Lemma surface scabrous; rough above. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn with 13–26 mm long limb; without a column; persistent. Lateral lemma awns 12–20 mm long; subequal to principal. Palea 0.2 length of lemma; without keels.
FLOWER Anthers 3.
FRUIT Caryopsis with adherent pericarp; 5–8 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.
