<Tr> <Th_colspan="2"> Scientific classification </Th> </Tr> <Tr> <Td> Kingdom: </Td> <Td> Plantae </Td> </Tr> <Tr> <Td> Subkingdom: </Td> <Td> Embryophyta </Td> </Tr> <Tr> <Td> (unranked): </Td> <Td> Spermatophyta </Td> </Tr>

What are some features that differ among flowers