Using observable features, construct a flow diagram and a dichotomous key of the following leaves: mango, jacaranda, MacDonald's eye, bean, elephant grass, and cassava.

Flow diagram:

1. Leaf shape:
A. Oval or oblong (go to 2)
B. Palmate or compound (go to 3)

2. Leaf margins:
A. Smooth (Mango)
B. Toothed (Jacaranda)

3. Leaf arrangement:
A. Alternate (MacDonald's eye)
B. Opposite (Bean)

4. Leaf size:
A. Large (Elephant grass)
B. Small (Cassava)

Dichotomous key:

1. Leaf shape:
A. Oval or oblong (go to 2)
B. Palmate or compound (go to 3)

2. Leaf margins:
A. Smooth (Mango)
B. Toothed (Jacaranda)

3. Leaf arrangement:
A. Alternate (MacDonald's eye)
B. Opposite (Bean)

4. Leaf size:
A. Large (Elephant grass)
B. Small (Cassava)

Flow Diagram:

Start -> Leaf shape -> Simple/Compound ->
Compound -> Leaf arrangement -> Opposite or alternate ->
Opposite -> Serrate margins -> Yes -> Jacaranda -> No -> Bean ->
Alternate -> Leaf length -> >20 cm -> Yes -> Elephant grass -> No ->
Leaf width -> >10 cm -> Yes -> Cassava -> No -> Mango ->
Simple -> Leaf margins -> Entire or serrate ->
Entire -> Yes -> MacDonald's eye -> No -> Mango ->

Dichotomous Key:

1a. Leaf shape: Simple (go to 2) vs. Compound (go to 3)
2a. Leaf margin: Entire -> MacDonald's eye
2b. Leaf margin: Serrate -> Mango
3a. Leaf arrangement: Opposite -> Bean
3b. Leaf arrangement: Alternate ->
4a. Leaf length: >20 cm -> Elephant grass
4b. Leaf length: <=20 cm ->
5a. Leaf width: >10 cm -> Cassava
5b. Leaf width: <=10 cm -> Jacaranda