a cymose inflorescence with all branches below the terminal flower in regular opposite pairs; compare monochasium.
a cyme in which the branches are opposite and approximately equal. pl. dichasia. adj. dichasial
(from the article `inflorescence`) A dichasium is one unit of a cyme and is characterized by a stunted central flower and two lateral flowers on elongated pedicels, as in the wood ... ...These inflorescences are determinate because, at the time of flowering, the whole apical meristem produces a flower; thus, the entire axis ceases ... ...
A cymose inflorescence with opposite branching below the flower which terminates each axis. ... Compare: monochasium. ... (09 Oct 1997) ... 
In botany, a dischasium is a cyme with side branches approximately opposite and equal, always longer than the main stem.
a form of cymose inflorescence in which each axis produces a pair of lateral axes.