, legitimate, scientific
[Willdenow, C.L. (1801), Der Gesellschaft Naturforschenden Freunde zu Berlin, Neue Schriften 3]:
[Cowie, I.D. & Albrecht, D.A. in Cowie, I.D. & Albrecht, D.A. (ed.) (2005), Checklist of Northern Territory Vascular Plant Species]:
[Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3]:
[Wilson, K.L. (August 2017), Report of the General Committee: 20. Taxon 66(4)]:
"Request (15) was for a binding decision on whether Hoppea Willd. (Gentianaceae) and Hoppia Nees (Cyperaceae) are sufficiently alike to be confused. A super-majority agreed (19–4–0–1) that these names are confusable and therefore should be treated as homonyms."