Dichotomous Key

The following is my submission for a dichotomous key for the four plants imaged in Module 2:

1. Plant has thick aerial woody stem ….       … Plant 1

A’. Plant has herbaceous stem –> a,b

1. Flower doesn’t (appear to) have petals…  …Plant 4
2. Flower has petals–> i,ii

1. Flower has white petals…                   …Plant 2
2. Flower has purple petals…                 …Plant 3

Included are also my notes on each plant. Any ? indicates uncertainty in claiming such: