Template:Steyn & Wyk, 2017a
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- Steyn, H.M & Wyk, A.E.van 2017. Taxonomic notes on Acanthopsis (Acanthaceae, tribe Acantheae): the group with semi-dense spikes and 5-fid bracts. Phytotaxa 324(2): 101-121. DOI: 10.11646/phytotaxa.324.2.1 PDF (11 MB)