Scorpioid cyme: The flower arrangement is in an alternate manner such that the inflorescence appears in a zigzag manner. Panicles can be made of many spikes, racemes, corymbs, or umbels. Trees of the Northern United StatesAustin C. Spike Raceme Panicle Umbel Corymb Cyme Composite Head. This is the characteristic inflorescence of the forget-me-not family, Boraginaceae (including the water-leafs, formerly Hydrophylklaceae). Helicoid cyme: In this type of inflorescence, the flower always develops only on one side, either on the left or right. Cyme, in appearance much like a corymb, but it differs in the fact that the central flower blooms first. Heads can be determinate or indeterminate.Р”Р„ many-flowered inflorescence with an indeterminate central axis and many opposite, lateral dichasia a mixed inflorescence, with determinate and indeterminate shoots.Р”Р„ determinate inflorescence with 2 dichotomous lateral branches and pedicles of equal length.Р”Р„ determinate cyme in which the branches develop only on 1 side, due to the abortion of opposing paired bud, the inflorescence thus appearing simple.Р”Р„ tight, modified helicoid cyme in which the pedicels are very short.Р”Р„ zig-zag determinate cyme with branches developing alternately on opposite sides of the rachis, due to abortion of opposing paired bud. An interesting and distinctive modified cyme is an elongate one termed that is coiled, and thus called a HELICOID CYME or a SCORPIOID CYME. Umbels can be determinate or indeterminate.Р”Р„ branched umbel, with primary rays arising from a common point, and secondary umbels arising from the tip of the primary rays.Р”Р„ dense vertically compressed inflorescence with sessile flowers on a receptacle and subtended by an involucre of phyllaries, characteristic of the Asteraceae. Inflorescences terminal inflorescence axis branched inflorescence a corymb of few-several cymes, cymose of 1-many rhipidia, each cyme several-flowered. Northern Ontario Plant Database Inflorescence TypesР”Р„n elongate, unbranched, indeterminate inflorescence with sessile flowers.Р”Р„ small spike, characteristic of grasses and sedges.Р”Р„n elongate, unbranched, indeterminate inflorescence with pedicelled flowers.Р”Р„ flat-topped raceme with elongate pedicels reaching the same level.Р”Р„ flat-topped or rounded inflorescence with the pedicels originating from a common point.

Cyme and corymb