dichasium

American  

[dahy-key-zhuhm, -zhee-uhm, -zee-uhm] / daɪˈkeɪ ʒəm, -ʒi əm, -zi əm /

noun

Botany.

PLURAL

dichasia

1. a form of cymose inflorescence in which each axis produces a pair of lateral axes.

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dichasium British  

/ daɪˈkeɪzɪəm /

noun

1. a cymose inflorescence in which each branch bearing a flower gives rise to two other flowering branches, as in the stitchwort Compare monochasium

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Other Word Forms

• dichasial adjective
• dichasially adverb

Etymology

Origin of dichasium

1870–75; < New Latin < Greek díchas ( is ) a division, derivative of dicházein to cleave (derivative of dícha apart) + Latin -ium -ium

Example Sentences

The term dichasium has also been applied to this form of cyme.

From Project Gutenberg

In some members of the order, as Dianthus barbatus, D. carthusianorum, &c., in which the peduncles are short, and the flowers closely approximated, with a centrifugal expansion, the inflorescence has the form of a contracted dichasium, and receives the name of fascicle.

From Project Gutenberg

Sometimes, especially towards the summit of a dichasium, owing to the exhaustion of the growing power of the plant, only one of the bracts gives origin to a new axis, the other remaining empty; thus the inflorescence becomes unilateral, and further development is arrested.

From Project Gutenberg