When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as

Options

A. Valvate
B. Vexillary
C. lmbricate
D. Twisted

Explanation

To solve the question regarding the overlapping margins of sepals or petals, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Concept of Estivation**:
- Estivation refers to the arrangement of sepals and petals in a flower. It describes how these floral parts are positioned in relation to each other.

**Hint**: Think about how the petals and sepals are arranged in a flower and what terms are used to describe their arrangement.

2. **Identifying Types of Estivation**:
- There are five different types of estivation: valvate, imbricate, twisted, vexillary, and open. Each type has a specific characteristic regarding how the margins of the petals or sepals overlap.

**Hint**: Recall the different types of estivation and their unique characteristics.

3. **Analyzing the Given Condition**:
- The question specifies that the margins of the sepals or petals overlap without any particular direction. This means that the overlapping does not follow a systematic pattern.

**Hint**: Focus on the type of estivation that allows for random overlapping of margins.

4. **Identifying the Correct Type**:
- The type of estivation where the margins overlap without a specific direction is termed **imbricate**. In imbricate estivation, the sepals or petals overlap each other but do so in a non-systematic manner.

**Hint**: Consider which type of estivation allows for random overlap, rather than a structured or directional overlap.

5. **Providing an Example**:
- An example of imbricate estivation can be found in the flower of **Calycanthus**. This helps to solidify the understanding of the term.

**Hint**: Think of flowers that exhibit this type of overlapping to reinforce your understanding.

### Final Answer:
The condition where the margins of sepals or petals overlap one another without any particular direction is termed **imbricate**.