A. Species is a tall forest tree with cones…………………………………… plant 1
A’. Species found in forest understory, smaller trees and lacking cones………………………
B. Plants with prominent midrib on the leaves – plant 4
B’ Plants lacking prominent midrib on the leaves- C
C. Species with hairy stems and white petals………………….…………………plant 2
C’. Species with hairy stem, but with lacking white petals.……………………… plant 3
Thanks Nadja,
this works well, the midrib on plant 2 is very hard to see as the leaves are revolute… so the B couplet works.