Dichotomous Key
A. Plants with woody stem – Plant 1
A1. Herbaceous Plants
B. Plants with multiple flowers – Plants 2 and 4 to C
B1. Plants with single flower – Plant 3
C. Plant with yellow flower – Plant 4
C1. Plant with white flower – Plant 2
Dichotomous Key
A. Plants with woody stem – Plant 1
A1. Herbaceous Plants
B. Plants with multiple flowers – Plants 2 and 4 to C
B1. Plants with single flower – Plant 3
C. Plant with yellow flower – Plant 4
C1. Plant with white flower – Plant 2
This was easy to follow. Similar to mine…i choose needles and cones to separate first and you chose woody stems. I do think it would be easier to look at these with photos embedded. I tried and wasn’t successful.
Your method is simple, which is good. I overcomplicated mine trying to rule out hypothetical plants.