DARBYSHIRE, I. KORDOFAMI, M. & AL. (2015). The plants of Sudan and South Sudan, An annoted checklist. Kew Publishing : 132
Bibliography for Southern Africa :
Énum. Pl. Fleurs Afr. Trop. 3: 251 (1995).
Bibliography for North Africa :
LEBRUN, J. P. (1983). La flore des massifs sahariens: espèces illusoires et endémiques vraies. Bothalia 14(3-4): 511-515
RÖSER, (1989). Karyologische, Systematische und Chorologische Untersuchumgen an der Gattung Helictotrichon Besser ex Schultes & Schultes (Poaceae) im westlichen Mittelnaurgebiet. 145: 215p.
Bibliography other :
KIPKOECH S. & AL. (2020). An annotated checklist of the vascular plants of Aberdare Ranges Forest, a part of Eastern Afromontane Biodiversity Hotspot PhytoKeys 149: 26