5. Dysphania schraderiana (Schult.) Mosyakin et Clemants (syn.: Chenopodium schraderianum Schult.) (E-Afr.) – A rare and ephemeral alien. First recorded in 1886 in Leuven (as. D. botrys). Most records are from the Vesdre valley near Verviers where Dysphania schraderiana occurred as a wool alien between 1897 and 1949. Furthermore collected in 1951 in La Louvière and in 1952 and 1955 on a dump in Kessel-Lo (as D. multifida). Most recently seen in 2000 in Bellem (possibly introduced with agricultural seeds), in Mol in 2011 (ground heap, without obvious vector of introduction) and in Beerse in 2018 (sandy roadside).
Dysphania schraderiana is poorly known and often confused with D. botrys and D. multifida.
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Selected literature:
Ludwig W. (1972) Chenopodium botrys, Ch. schraderanum und Ch. pumilio. Hess. Flor. Briefe 21(1): 2-6.
Schwarzová T. (1993) Rozsirenie druhov Chenopodium botrys L. a Ch. schraderianum Schultes v Ceskej republike a Slovenskej republike. Bull. Slov. Bot. Spoločn. 15: 16-23.
Schwarzová T. (1996) K historii rozsirenia a charakteristike stanovist Chenopodium botrys L. a Ch. schraderianum Schultes na Slovensku a v Ceskej republike. Bull. Slov. Bot. Spoločn. 18: 99-105.