Kew Bull. 20: 434 (1966).- Type: Schweinfurth 183, Sudan (holo- W, iso- P).
Andropogon annuus Hack., Flora 68: 137 (1885);
Hyparrhenia djalonica Jacques-Félix, J. Agric. Trop. Bot. Appl. 1: 51 (1954).- Type: Jacques-Félix 1907, Mamou, Guinea (holo- P);
Hyparrhenia sulcata Jacques-Félix, J. Agric. Trop. Bot. Appl. 1: 51 (1954).- Type: Berhaut 3040, Senegal (iso- WAG, BR);
Parahyparrhenia jaegeriana A. Camus, Bull. Mus. Hist. Nat. , sér. 2, 22: 404 (1950);
Hyparrhenia jaegerana (A. Camus) Jacq.-Fél., Boissiera 9: 109 (1960).
Regional litterature: FWTA: 498 (1972); Ghana grasses: 204, fig. 68 (1977); Gram. Cameroun: 499, fig. 108 (1992) ; Poac. CI: 612, fig. (1995); Fl. Guinée: 471 (2009); Pl. Burkina Faso: 103 (2012); Fl. Chad (2013); Pl. Sudan & S Sudan: 140 (2015).
Description:
* Loosely tufted or solitary-stemmed erect annual 0.5-1 m high. Culms slender, weak and easily crushed. Leaves narrow linear, flat with a white midrib, glabrous, usually tightly folded and filiform, 5-45 cm long, 1-6 mm wide; base slightly or markedly narrowed, passing straight into the sheath; ligule a membrane, 2-5 mm long melted with the auricles; sheath with prominent auricles 2-5 mm long contiguous with the ligule, glabrous. Roots a fine dense mat.
* Inflorescence on sparingly branched culms with closely appressed paired spathate terminal racemes. Raceme-bases filiform, unequal, the upper 3-6 mm long, glabrous. Racemes 2-6 cm long, bearing 4-7 fertile spikelets, held by closely tangled, long awns; internodes filiform, flat, 5 mm long. Spatheole linear, 6-15 cm long. Basal spikelets 2 in lower raceme, 0 in upper raceme. Pedicels filiform ciliate.
* Spikelets densely rufous-hairy. Sessile spikelets linear, 5-12 mm long; callus cuneate, 1-4 mm long, pungent, pilose with white or red hairs. Glumes coriaceous, the lower with a deep median groove, the upper boat-shaped. Upper lemma shortly bi-lobed with a black pubescent geniculate awn, 4-10 cm long with twisted dark brown column with yellow brown hairs of 1 mm long. Pedicelled spikelets 5-11 mm long; glumes coriaceous, with 1-9 mm long awn. Anthers bright red.
Distribution West Africa and world-wide: Senegal,Guinea Bissau, Guinea, Sierra Leone, Mali, Ivory Coast, Burkina Faso, Ghana, Cameroon, CAR, Chad, South Sudan.