Amanita a poisonous fungus is a

Options

A. Mushroom
B. Bracket Fungus
C. Toadstool
D. Puffball

Answer

To determine what type of fungus Amanita is, we can analyze the options provided:

1. **Mushroom**: While Amanita is often referred to as a mushroom, it is important to note that the term "mushroom" generally refers to a broader category of fungi. Specifically, the genus Amanita includes several species, some of which are indeed poisonous. However, the term "mushroom" is too general for our specific identification of Amanita.

2. **Bracket Fungus**: This type of fungus typically grows on trees and is known for its shelf-like appearance. Bracket fungi belong to a different category and do not include Amanita. Therefore, this option is incorrect.

3. **Toadstool**: This term is commonly used to refer to certain types of mushrooms, particularly those that are poisonous. Amanita species, including the well-known Amanita muscaria, are often classified as toadstools due to their toxic properties. Hence, this option is correct.

4. **Puffball**: Puffballs are a type of fungus that typically have a round shape and release spores when mature. They are not related to Amanita and are not known for being poisonous. Thus, this option is also incorrect.

Based on the analysis, the correct answer is that Amanita, a poisonous fungus, is a **Toadstool**.

### Step-by-Step Solution:
1. **Identify the options**: The options provided are mushroom, bracket fungus, toadstool, and puffball.
2. **Analyze each option**:
- **Mushroom**: Too general; Amanita is specifically a type of mushroom.
- **Bracket Fungus**: Incorrect; does not include Amanita.
- **Toadstool**: Correct; Amanita is commonly referred to as a toadstool due to its poisonous nature.
- **Puffball**: Incorrect; not related to Amanita.
3. **Select the correct answer**: The correct identification of Amanita is as a toadstool.