Cyathium is found in genus
(a) Croton
(b) Ficus
(c) Euphorbia
(d) Ricinus

Options

A. Croton
B. Ficus
C. Euphorbia
D. Ricinus

Answer

To determine which genus contains the cyathium inflorescence, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the term "Cyathium":**
- Cyathium is a specific type of inflorescence characterized by a unique arrangement of flowers and bracts.

2. **Identify the characteristics of Cyathium:**
- In a cyathium, the bracts are modified and fused to form a structure called an involucre.
- The female flower is completely enclosed by a cap, which is surrounded by male flowers.

3. **Analyze the options provided:**
- (a) Croton
- (b) Ficus
- (c) Euphorbia
- (d) Ricinus

4. **Recall which genus is known for Cyathium:**
- Cyathium is commonly observed in the genus **Euphorbia**. It is not found in Croton, Ficus, or Ricinus.

5. **Select the correct answer:**
- Based on the characteristics and the known occurrence of cyathium, the correct answer is **(c) Euphorbia**.

### Final Answer:
(c) Euphorbia