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.


HABIT Annual. Culms erect, or geniculately ascending; 10–15.75–28 cm long. Leaf-sheath auricles falcate. Ligule an eciliate membrane.

INFLORESCENCE Inflorescence composed of racemes.

Racemes single; erect; bilateral. Rhachis fragile at the nodes; semiterete. Spikelet packing broadside to rhachis. Rhachis internodes oblong. Rhachis internode tip transverse.

Spikelets appressed; solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets, or 2 fertile florets (1); with a barren rhachilla extension. Spikelets oblong; dorsally compressed; 7–8.5–10 mm long; falling entire; deciduous with accessory branch structures. Rhachilla internodes definite (1/1).

GLUMES Glumes collateral; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate (1), or oblong (1); 1 length of upper glume; coriaceous; without keels; 5–6 -veined (1), or 7 -veined, or 8–9 -veined (1). Lower glume lateral veins without ribs (1), or ribbed (1). Lower glume surface without pits; glabrous (1), or puberulous (1), or hispidulous (1). Lower glume apex obtuse (1), or acute (1). Upper glume lanceolate (1), or oblong (1); coriaceous; without keels; 5–7 -veined. Upper glume lateral veins without ribs (1), or ribbed (1). Upper glume surface glabrous (1), or puberulous (1), or hispidulous (1). Upper glume apex acute.

FLORETS Fertile lemma lanceolate (1), or oblong (1); membranous; without keel; wingless; 3–4 -veined (1), or 5 -veined. Lemma surface smooth (1), or scaberulous (1); unwrinkled; without grooves; puberulous; with clavate hairs. Lemma apex acute. Palea surface pubescent.

FLOWER Lodicules 2; membranous; ciliate. Anthers 3. Ovary pubescent on apex.

FRUIT Caryopsis with adherent pericarp; oblong; dorsally compressed. Embryo 0.3 length of caryopsis. Hilum linear; 1 length of caryopsis.

DISTRIBUTION Temperate Asia, or Tropical Asia (1).

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