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.

Perotis hordeiformis

HABIT Annual. Culms geniculately ascending; (5–)15–40 cm long. Ligule an eciliate membrane. Leaf-blades lanceolate, or ovate; 1.5–4(–5.5) cm long; 4–7.5 mm wide.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; multilateral; 5–15(–20) cm long. Spikelet packing crowded, or contiguous; irregular.

Spikelets spreading, or ascending; solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear, or lanceolate; subterete; 1.5–2.5 mm long; falling entire. Spikelet callus square; 0.2 mm long.

GLUMES Glumes similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 1.5–2.5 mm long; 1 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface hispidulous; hairy in lines. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 5–15 mm long. Upper glume lanceolate; 1.5–2.5 mm long; 1.5–2.5 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume primary vein distinct. Upper glume lateral veins absent. Upper glume surface hispidulous; hairy in lines. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 5–15 mm long.

FLORETS Fertile lemma lanceolate; 0.5–1 mm long; hyaline; without keel; 1 -veined. Lemma apex acute. Palea hyaline; 0 -veined; without keels.

FLOWER Anthers 3.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Asia-temperate: China. Asia-tropical: India, Indo-China, and Papuasia.

NOTES Cynodonteae. Fl Pak.

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