Perotis humbertii

HABIT Annual. Culms geniculately ascending; 25–30 cm long. Culm-internodes 6 cm long. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane. Leaf-blades linear, or lanceolate; 1–2 cm long; 1.5–5 mm wide. Leaf-blade margins serrulate.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 1; single; flexuous; multilateral; 3–8(–10) cm long; 3–4 mm wide. Spikelet packing lax; irregular.

Spikelets spreading; solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 5–6 mm long; falling entire. Spikelet callus linear.

GLUMES Glumes similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 5–6 mm long; 1 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface puberulous. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 5–6 mm long. Upper glume lanceolate; 5–6 mm long; 2 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume primary vein conspicuous; depressed. Upper glume lateral veins absent. Upper glume surface puberulous. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 5–6 mm long.

FLORETS Fertile lemma lanceolate; 2–3 mm long; hyaline; without keel; 1 -veined. Lemma apex acute.

DISTRIBUTION Africa: western Indian ocean.

NOTES Cynodonteae. Camus 2007.

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