Large posterior petal is chracteristic to vexillary aestivation found in members of

Options

A. Solanaceae
B. Lillaceae
C. Fabaceae
D. Malvaceae

Answer

**Step-by-Step Solution:**

1. **Understanding Aestivation**: Aestivation refers to the arrangement of petals and sepals in a flower bud before it opens. It is crucial to identify the type of aestivation to answer the question correctly.

2. **Identifying Vexillary Aestivation**: In vexillary aestivation, one petal is larger than the others and is positioned at the back (posterior) of the flower. This large posterior petal is known as the standard petal, while the two lateral petals are smaller and positioned on the sides.

3. **Recognizing the Family**: The question specifically asks about the characteristic of a large posterior petal in vexillary aestivation. This arrangement is commonly found in the Fabaceae family (also known as Leguminosae).

4. **Evaluating Other Options**:
- **Option A: Solanaceae** - This family exhibits valvate aestivation, where petals do not overlap.
- **Option B: Liliaceae** - Similar to Solanaceae, Liliaceae also shows valvate aestivation.
- **Option C: Malvaceae** - This family has twisted aestivation, where the petals overlap but do not have a distinct large posterior petal.

5. **Conclusion**: Based on the characteristics of vexillary aestivation and the presence of a large posterior petal, the correct answer is the Fabaceae family.

**Final Answer**: The large posterior petal characteristic of vexillary aestivation is found in members of the **Fabaceae** family.

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