A. Cones present, leaves are needles……………………………………………… Plant 1
A’. Cones not present, leaves are not needles – B
B. Complete flowers, perianth visible to naked eye – C
B’. Incomplete flowers ……………………………………………………………. Plant 4
C. Petals white, many flowers per stem ………………………….. Plant 2
C’. Petals violet, one flower per stem …………………………….. Plant 3
Nice work on the dichotamous key! I like how you used the complete and incomplete flower reference for your B set.