The book which has left the maximum influence on the thinking of taxonomists is

Options

A. Species Plantarum
B. Origin of Species
C. Systema Naturae
D. Historia Plantarum.

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks which book has had the most significant influence on the thinking of taxonomists.

2. **Review the Options**: The options provided are:
- A) Species Plantarum
- B) Origin of Species
- C) Systema Naturae
- D) Historia Plantarum

3. **Analyze Each Option**:
- **Option A: Species Plantarum**: This book was written by Carl Linnaeus and is significant for introducing the binomial nomenclature system, which is important for naming species.
- **Option B: Origin of Species**: Written by Charles Darwin, this book discusses natural selection and evolution, which are fundamental concepts that have greatly influenced taxonomy and the classification of organisms.
- **Option C: Systema Naturae**: Also authored by Linnaeus, this work describes all known species of plants and animals and laid the groundwork for modern taxonomy.
- **Option D: Historia Plantarum**: This book is a survey of botany written by Theophrastus, but it is less influential in modern taxonomy compared to the others.

4. **Determine the Most Influential Book**:
- While all the books listed have contributed to the field of taxonomy, "Origin of Species" has had the most profound impact on the understanding of biological classification due to its introduction of evolutionary concepts. These concepts have reshaped how taxonomists view the relationships between different organisms.

5. **Conclusion**: Based on the analysis, the book that has left the maximum influence on the thinking of taxonomists is **B) Origin of Species** by Charles Darwin.

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