An inflorescence with a single female flower surrounded by several male flowers with a nectar secreting gland at the rim of cup shaped involucre is called

Options

A. Hypanthodium
B. Verticillaste
C. Cyathium
D. Spadix

Answer

To solve the question regarding the type of inflorescence that consists of a single female flower surrounded by several male flowers, with a nectar-secreting gland at the rim of a cup-shaped involucre, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Components of the Question**:
- We need to identify an inflorescence type.
- It must have a single female flower.
- It should be surrounded by several male flowers.
- There should be a nectar-secreting gland at the rim of a cup-shaped involucre.

2. **Identify Possible Inflorescence Types**:
- The question suggests looking for specific characteristics. We can consider various types of inflorescences such as Hypanthodium, Verticillate, and Scythium.

3. **Analyze Hypanthodium**:
- Hypanthodium has a fleshy receptacle that creates a hollow cavity with an opening called an ostiole.
- Male flowers are located at the top, while female flowers are at the bottom.
- However, it does not have a nectar-secreting gland or a cup-shaped involucre, so it does not fit the description.

4. **Analyze Verticillate**:
- In a verticillate inflorescence, flowers are arranged in whorls at a single node.
- There are no specific nectar-secreting glands involved, and it does not fit the description of having a single female flower surrounded by male flowers.

5. **Analyze Scythium**:
- Scythium inflorescence features a cup-shaped involucre that encloses a single female flower.
- The male flowers surround the female flower, fitting the description perfectly.
- Additionally, Scythium has nectar-secreting glands at the rim of the involucre.

6. **Conclusion**:
- Based on the analysis, the correct answer is **Scythium**.

### Final Answer:
The inflorescence described in the question is called **Scythium**.

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