Test question regarding botany
These are floral formulas, a way to succinctly describe how many petals/sepals/pistils/... the flower contains, and their relations (free, fused, ...). The wikipedia page describe the meaning of each symbol.

For example, for the first one :


Up arrow : symmetry along the vertical axis
K(6) : 6 sepals (K), which are joined (parenthesis)
C(2.3) : Two large petals, three smaller, joined. (not sure on the exact signification of 2.3)
A2 : Two stamen, not joined 
[C(2.3) A2] : the petals and stamen are fused
G(2) : two fused carpels


Continuing with that example, it seems to me the first formula is not correct given the schematics below : there are 4 carpels. Though I'm no botanist.