Celtis brieyi De Wildeman (1920: 111) .

Type: — AFRICA. Congo Kinshasa, Region of Ganda-Sundi, 1911, fl., J. Briey 152 [BR: First-step lectotype, designated by Polhill in Kew Bull. 19(1): 140 (1964), as ‘holotype’. Second-step lectotype designated here, BR barcode 0000008968883!; isolectotypes BR barcode 0000008968234!, BR barcode 0000008968562!, BR barcode 0000008969217!] .

Nomenclatural notes: —When describing C. brieyi, De Wildeman (1920) cited J. Briey 152 without specifying the herbarium in which specimens were conserved. Polhill (1964) reported that the “ holotype ” is in BR. By citing the herbarium Polhill (1964) performed an inadvertent lectotypification. Four samples are located in BR. Considering that in BR there are four samples and that Polhill (1964) did not specify the type, and that the citation by Sattarian et al. (2006) cannot be recognized as effective lectotypification (ICN Art. 7.11), we propose a second lectotypification step (ICN Art. 9.17) and designate the specimen at Herb. BR with barcode 0000008968883 as lectotype (ICN Art. 9.3), since this specimen has leaves and flowers, these being the characteristics used by De Wildeman (1920) to differentiate C. brieyi from C. adolfi-friderici .

Taxonomic notes: —Synonym of C. tessmannii (Sattarian et al. 2006) .