A thyrse is a type of
inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...
in which the main axis grows
indeterminately, and the subaxes (branches) have determinate growth.
[{{cite book , author1=Hickey, M., author2=King, C. , year=2001 , title=The Cambridge Illustrated Glossary of Botanical Terms , publisher=Cambridge University Press]
Gallery
File:Syringa Leipzig 2011.jpg, ''Syringa
''Syringa'' is a genus of 12 currently recognized species of flowering woody plants in the olive family or Oleaceae called lilacs. These lilacs are native to woodland and scrub from southeastern Europe to eastern Asia, and widely and commonly ...
'', lilac
File:Banana Maria Sibylla Merian 1705 plate XII.png, The thyrse of a banana plant has side branches which become hands of bananas
File:Vitex agnus-castus 002.JPG, The inflorescence of ''Vitex agnus-castus
''Vitex agnus-castus'', also called vitex, chaste tree (or chastetree), chasteberry, Abraham's balm, lilac chastetree, or monk's pepper, is a native of the Mediterranean region. It is one of the few temperate-zone species of '' Vitex'', which is ...
'' has branches, each of which is a thyrse
References
Plant morphology