GrassBase - The Online World Grass Flora


W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Aristida antoniana

HABIT Perennial; caespitose. Culms 10–30 cm long; 0 -noded. Leaves mostly basal. Ligule a fringe of hairs. Leaf-blades convolute; 2–12 cm long; 1–3 mm wide.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear; 3–7 cm long. Primary panicle branches appressed.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 10–11 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pubescent.

GLUMES Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume linear; 10–11 mm long; 1 length of upper glume; membranous. Lower glume primary vein ciliolate. Lower glume surface scabrous. Lower glume apex acute; muticous, or mucronate. Upper glume linear; 10–11 mm long; 1.1 length of adjacent fertile lemma; membranous. Upper glume primary vein ciliolate. Upper glume surface scabrous. Upper glume apex acute; muticous, or mucronate.

FLORETS Fertile lemma linear; subterete; 8–10 mm long; coriaceous; without keel; 3 -veined. Lemma margins convolute; covering most of palea. Lemma apex awned; 3 -awned. Principal lemma awn with 12–18 mm long limb. Lateral lemma awns shorter than principal.

FLOWER Anthers 3.

DISTRIBUTION South America: western South America and southern South America.

NOTES Aristideae. Gr Peru 1995.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.