Flora of Delhi was compiled by

Options

A. P Maheshwari
B. Roxburgh
C. JK Maheshwari
D. Father H Sant~pau

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks who compiled the "Flora of Delhi." This is a specific inquiry about a botanical work related to the plant species found in Delhi.

2. **Identifying the Options**: The options provided are:
- Roxburgh
- JK Maheshwari
- P Maheshwari
- Fr. H. St. Paul

3. **Analyzing Each Option**:
- **Roxburgh**: Known as the founding father of Indian Botany, he worked extensively in India and described many species, but he did not compile the "Flora of Delhi."
- **JK Maheshwari**: He is the correct answer. He compiled the "Flora of Delhi" and published a comprehensive list of 478 species found in the region.
- **P Maheshwari**: He is recognized for his work on the technique of test tube fertilization in angiosperms, not for compiling the "Flora of Delhi."
- **Fr. H. St. Paul**: He is known for his taxonomical research and for providing Latin nomenclature for several Indian plant species, but he did not compile the "Flora of Delhi."

4. **Conclusion**: After analyzing the contributions of each individual, it is clear that the "Flora of Delhi" was compiled by **JK Maheshwari**.

**Final Answer**: JK Maheshwari compiled the "Flora of Delhi."

---