Name any one plant species which produce anti-malarial drugs.

Explanation

**Step-by-Step Solution:**

1. **Identify the Requirement**: The question asks for a plant species that produces anti-malarial drugs.

2. **Recall Relevant Information**: One of the well-known plants that produce anti-malarial drugs is the Chinchona tree.

3. **Provide Details**: The Chinchona plant is significant because it produces quinine, which is an effective anti-malarial drug.

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