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.

Eriachne semiciliata

HABIT Annual. Culms geniculately ascending; slender; 20–54 cm long; 4–6 -noded. Culm-internodes terete, or elliptical in section; ridged; antrorsely scabrous; distally hispid; with reflexed hairs. Culm-nodes pubescent, or bearded. Lateral branches ample. Leaf-sheaths tight; mostly shorter than adjacent culm internode; hispid; with reflexed hairs; outer margin hairy. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs; 0.8–1.7 mm long. Leaf-blades flat, or involute; 2–4 cm long; 2–3 mm wide. Leaf-blade surface ribbed; scabrous; hispid. Leaf-blade apex obtuse.

INFLORESCENCE Inflorescence a panicle. Peduncle antrorsely scabrous above.

Panicle open; oblong; 2–10.5 cm long; 1–1.4 cm wide. Primary panicle branches 1.5–7 cm long. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 7–20 mm long.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; compressed slightly; 2.5–4 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus 0.2–0.3 mm long; bearded; obtuse.

GLUMES Glumes persistent; similar; shorter than spikelet, or reaching apex of florets; thinner than fertile lemma. Lower glume elliptic, or ovate, or orbicular; 2.5–4 mm long; 1 length of upper glume; membranous; much thinner on margins; without keels; 7–9 -veined. Lower glume surface smooth, or asperulous; rough between veins. Lower glume apex obtuse; mucronate. Upper glume elliptic, or ovate, or orbicular; 2.5–4 mm long; 0.9–1 length of adjacent fertile lemma; membranous; with scarious margins; without keels; 7–9 -veined. Upper glume surface smooth, or asperulous; rough between veins. Upper glume apex obtuse; mucronate.

FLORETS Fertile lemma elliptic, or oblanceolate; laterally compressed; 2.5–3.5 mm long; membranous; without keel; 5 -veined. Lemma lateral veins ribbed. Lemma surface smooth, or scaberulous; rough above; pilose; hairy below. Lemma margins involute; ciliate; hairy below. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 0.6–4.5 mm long overall. Palea 2 -veined. Palea surface pilose. Palea apex entire.

FLOWER Lodicules 2. Anthers 3; 0.5–1.3 mm long.

FRUIT Caryopsis with adherent pericarp; ellipsoid; 1.6–2 mm long; obtuse. Embryo 0.15–0.33 length of caryopsis.

DISTRIBUTION Australasia: Australia.

NOTES Eriachneae. Lazarides 1995.

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