A corolla of five petals with vexillary aestivation is said to

Options

A. ligulate
B. bilabiate
C. personate
D. papilionaceous

Explanation

To solve the question "A corolla of five petals with vexillary aestivation is said to," we need to analyze the options provided and understand the terms involved.

### Step-by-Step Solution:

1. **Understanding the Terms:**
- **Corolla:** The collection of petals in a flower.
- **Vexillary Aestivation:** A type of floral arrangement where one petal (the standard) is larger and is positioned above the others (the wings and the keel). This is typical of the Fabaceae family (legumes).

2. **Analyzing the Options:**
- **Option A: Ligulate**
- Ligulate flowers have petals that are strap-shaped and are zygomorphic (symmetrical along one plane). This does not match our description of five petals with vexillary aestivation.
- **Option B: Bilabiate**
- Bilabiate flowers have two distinct lips and are also zygomorphic. This does not fit the description either, as vexillary aestivation does not create two lips.
- **Option C: Personate**
- Personate corollas have a closed mouth and are similar to bilabiate flowers. This option does not describe the vexillary arrangement.
- **Option D: Papilionaceous**
- Papilionaceous corolla refers to the butterfly-like structure of the flowers in the legume family, which typically have five petals arranged in vexillary aestivation.

3. **Conclusion:**
- The correct answer is **Option D: Papilionaceous**, as it accurately describes a corolla of five petals with vexillary aestivation.

### Final Answer:
A corolla of five petals with vexillary aestivation is said to be **Papilionaceous**.