Question

How many types are of Monochasial inflorescence? Give example of each.

Answer 1

Uniparous or monochasial cyme: This is a cymose inflorescence where the main axis terminates into flower and produces only one lateral branch which also terminates into a flower. Depending upon the sequence of lateral branches uniparous cyme is of following two types

1. Scorpioid cyme (cincinnus or rhipidium): A uniparous cyme in which the successive lateral branches develop on alternate sides in a zig-zag manner is called scorpioid cyme; e.g., Ranunculus bulbosus, Heliotropium, etc.
2. Helicoid cyme (drepanium or bostryx): This is a uniparous cyme in which the lateral branches develop successively on the same side forming a sort of helix; e.g., Begonia. Juncus, etc.