Which plants have floral parts in groups of five?

Monocots have their parts in multiples of three. Dicots in multiples of 4 or 5. The problem comes when the 3 ,4, and 5 multiples cross each other. So you need to look at the leaf venation, dicots have a netted venation, while the monocots have parallel venation.

Which plants have floral parts in groups of five?
Dicots; flower parts mostly in fours or fives or multiples of four or five.
Reply:flowers petals are in groups of 5
Reply:Coz Mother Nature works on the Odd, rather than the Even.

I don't know Y.

God Knows!
Reply:Sub class pentendrae
Reply:Dicot flowers have parts in multiples of four or five (four, five, ten, etc.). But this character is not always reliable, however, and is not easy to use in some flowers with reduced or numerous parts.
Reply:If you are asking about 5 petals, they belong to the rose family. Like primrose