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What is an Herbarium?
Genus Descriptions
Species Descriptions
Ontario FEC V-Types
Bibliography
Terminology
Who Collects the Plants?
Collector Biographies
Nomenclature Primer
Website Information
Northern Ontario Plant Database
Inflorescence Types
Simple Cyme or Dichasium
a determinate inflorescence with 2 dichotomous lateral branches and pedicles of equal length.
Compound Dichasium
a branched dichasium
Compound Cyme
a determinate thyrse.
Helicoid Cyme
(or bostryx)
a determinate cyme in which the branches develop only on 1 side, due to the abortion of opposing paired bud, the inflorescence thus appearing simple.
Cincinnus
a tight, modified helicoid cyme in which the pedicels are very short.
Scorpioid Cyme
(or rhipidium)
a zig-zag determinate cyme with branches developing alternately on opposite sides of the rachis, due to abortion of opposing paired bud.
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