ANTICHORUS, in botany: A genus of the monogynia order, belonging to the octandria class; of which the essential characters are: The calyx is a four-leaved perianthium: The corolla consists of four expanding petals: The pericarpium is a capsule, above, subulated, with four cells and four valves: The seeds are very numerous. There is but one species, the depressus, a native of Arabia.