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 schultzii

HABIT Perennial; caespitose. Culms 35–65 cm long. Culm-internodes smooth; distally glabrous. Lateral branches fastigiate. Leaf-sheaths smooth, or scaberulous; glabrous on surface. Leaf-sheath oral hairs ciliate; 3–4 mm long. Ligule a fringe of hairs; 0.4–0.6 mm long. Collar glabrous. Leaf-blades flexuous; involute; 10–25 cm long; 1–2 mm wide. Leaf-blade surface scabrous; rough adaxially.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; elliptic; 22 cm long; 6 cm wide. Primary panicle branches 2–4 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 11–21 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; pubescent; acute.

GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 6–18 mm long; 0.6–0.9 length of upper glume; membranous; 1-keeled; 3–7 -veined. Lower glume surface asperulous, or scabrous; rough above. Lower glume apex acute, or acuminate; awned; 1 -awned. Lower glume awn 1–2.3 mm long. Upper glume lanceolate; 11–21 mm long; 1.1–1.7 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute, or acuminate; awned; 1 -awned. Upper glume awn 1–2.5 mm long.

FLORETS Fertile lemma lanceolate; subterete; 10–12 mm long; coriaceous; pallid, or light brown; without keel; 3 -veined. Lemma surface smooth, or scabrous; rough above. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; subterete below; with 20–30 mm long limb; with twisted column; persistent. Column of lemma awn 5–7 mm long. Lateral lemma awns 18–26 mm long; shorter than principal. Palea 0.2 length of lemma; without keels.

FLOWER Anthers 3.

FRUIT Caryopsis with adherent pericarp; 7–8 mm long. Hilum linear; 0.2 length of caryopsis.

DISTRIBUTION Australasia: Australia.

NOTES Aristideae. Simon 1993.

ADDITIONAL CHARACTERS Mid awn as thick as laterals.

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