1) Flower cluster 2) Thyrsus 1) Thyrsus 
a branched inflorescence in which the main axis is indeterminate (racemose) and the lateral branches determinate (cymose).
A thyrse is a type of inflorescence in which the main axis grows indeterminately, and the subaxes (branches) have determinate growth. ==Gallery== File:Syringa Leipzig 2011.jpg|Syringa, 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.J...
• (n.) A thyrsus.
A branched inflorescence in which the main main stem is indeterminate and the lateral branches determinate in their growth. ... (09 Oct 1997) ... 
A paniclelike inflorescence with one main indeterminate axis and many lateral axes which are determinate.
an inflorescence resembling a compact panicle.
Thyrse (thẽrs) noun [ Confer French thyrse .] A thyrsus. 
thyrsus noun a dense flower cluster (as of the lilac or horse chestnut) in which the main axis is racemose and the branches are cymose