Decuma
Decuma a town of Hispania Baetica, near the river Baetis, and apparently on its left bank, near its junction with the SINGULIS (Plin. Nat. 3.1. s. 3.) It is supposed to be the same place as the DETUMO of which we have some coins (Mionnet, Suppl. vol. i. p. 114; Sestini, p. 88); and Harduin takes it for the Δητοῦνδα of Ptolemy (2.4.11).
From William Smith (ed.), Dictionary of Greek and Roman Geography. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.