Schlechtendalia 25: 59 (2013).- Type: Mann 2020, Cameroun (holo- B).
Avenastrum mannii Pilger, Notizbl. Bot. Gart. Berl. 9: 520 (1926);
Helictotrichon mannii (Pilger) CE. Hubbard, Bull. Misc. Inform. Kew 1936: 334 (1936).
Regional litterature: FTEA: 89, fig. 30 (1970); FWTA: 372 (1972); Gram. Cameroun: 71 (1992).
Description:
* Perennial of 0.8-1 m high. Culms erect or geniculately ascending. Leaves 15-35 cm long and 4-10 mm wide, sparsely hairy; ligule a glabrous eciliate membrane of 2-3 mm long.
* Inflorescence a narrow dense panicle of 25-30 cm long. Basal branches 4-12 cm long.
* Spikelets with 3-4 fertile florets with a barren rhachilla extension well visible beyond, oblong, 12-16 mm long ; internodes 3-3.5 mm long, pilose with 1-1.5 mm long hairs ; callus pilose. Lower glume elliptic, 3.5-5 mm long, herbaceous ; upper glume oblong, 5-8 mm long. Lemmas elliptic, 10-16 mm long, herbaceous, dentate, with a geniculate awn on 2/3 of lemma back of 10-16 mm long.
Distribution West Africa: Cameroun
Distribution world-wide: Bioko