When stamens are attached to perianth, it is known as

Options

A. epipetalous
B. episepalous
C. gynandrous
D. epiphyllous

Answer

To solve the question "When stamens are attached to perianth, it is known as", we need to understand the terms associated with the attachment of stamens in flowering plants.

### Step-by-Step Solution:

1. **Understand the Terms**:
- **Perianth**: This is the collective term for the calyx (sepals) and corolla (petals) of a flower. When we cannot differentiate between sepals and petals, we refer to them as perianth.
- **Stamens**: These are the male reproductive parts of a flower, consisting of an anther and a filament.

2. **Identify the Options**:
- The options given are:
- A) Epipetalous
- B) Episepalous
- C) Gynandrous
- D) Epiphyllous

3. **Analyze Each Option**:
- **Epipetalous**: This term refers to stamens that are attached to the petals, not the perianth as a whole.
- **Episepalous**: This term refers to stamens that are attached to the sepals, which again does not refer to the perianth.
- **Gynandrous**: This term refers to stamens that are fused with the pistil, which is not relevant to the perianth.
- **Epiphyllous**: This term means that the stamens are attached to the perianth, which includes both petals and sepals.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Epiphyllous**, as it describes the condition where stamens are attached to the perianth.

### Final Answer:
**Epiphyllous**