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The Chenopodiaceae is a large family within the order Caryo phyllales. It comprises ~ 1600 species and is divided into ~ 110 genera (Sukhorukov 2014, Hernández-Ledesma et al. 2015). It is mostly distributed in the arid regions of the World. The exact number of the family’s representatives in Africa is still unknown, but according to our investigations, the number of indigenous and alien species may reach at least 300, including the largest genera Caroxylon Thunb. (~ 60 spp.), Atriplex L. (40 spp.), Chenopodium L. s.str. (25 spp.), and Suaeda Forssk. (20 spp.). Only a few Chenopodiaceae species are found in West-Central Tropical Africa (Hauman 1951), in contrast to arid territories in the northern, eastern and southern parts of the continent with high taxonomic richness. The most common chenopodiaceous species distributed in West-Central Tropical Africa (Burundi, Central African Republic, Cameroon, D.R.Congo, Equatorial Guinea, Gabon, Republic of Congo, and Rwanda) is the American Dysphania ambrosioides (L.) Mosyakin & Clemants (Baker & Clarke 1909, Renier 1948, Hauman 1951, Cavaco 1963, Fernández-Casas 1994, Fernández-Casas & Morales-Valverde 1995), previously placed in the genus Chenopodium. Taxonomy of the indigenous representatives of the family in Africa is still insufficiently studied. In the past decade, taxonomic revisions were only prepared for the genera Sarcocornia A.J.Scott in Southern Africa (Steffen et al. 2009, 2010) and Atriplex in East Tropical Africa and the Mascarene Islands (Sukhorukov 2012, 2013). However, some genera, especially Atriplex and Dysphania (subfam. Chenopodio ideae), are difficult to diagnose and are often confused with other native or even alien taxa (Sukhorukov 2012). In the present article, the amendments to Chenopodiaceae in West-Central Tropical Africa concern both genera. A closer look at a single Atriplex species collected in D.R.Congo and previously identified as Atriplex hastata or ‘Atriplex sp.’ (Hauman 1951) revealed that it is a new species from Atriplex sect. Teutliopsis described in the present article. Additionally, we have discovered new, previously misidentified, specimens of Dys-

Notes on Atriplex, Oxybasis and Dysphania (Chenopodiaceae) in West-Central Tropical Africa