Yes, you can find study material specifically tailored for the UPSC exam for Botany optional subject.

Here are some ways to find study material for the UPSC exam for Botany optional subject:

1. UPSC Official Website:
- The official website of the Union Public Service Commission (UPSC) is a reliable source to find study material for all subjects, including Botany.
- Go to the UPSC website and navigate to the 'Examinations' section.
- Look for the syllabus and previous year question papers for the Botany optional subject.
- These resources will give you a clear idea of the topics to focus on and the type of questions asked in the exam.

2. Educational Websites:
- EduRev is a reputable educational website that offers study material for various competitive exams, including the UPSC exam.
- You can find comprehensive study notes, video lectures, practice questions, and mock tests specifically designed for the Botany optional subject.
- Visit EduRev and search for Botany study material in the UPSC section.
- Make sure to check the ratings and reviews of the study material before accessing it.

3. Bookstores:
- Visit local bookstores or online platforms that specialize in UPSC exam preparation books.
- Look for books that cover the Botany optional subject in detail.
- Some popular books for Botany in UPSC include "Plant Physiology" by Taiz and Zeiger, "Cell and Molecular Biology" by De Robertis and De Robertis, and "Plant Anatomy" by B.P. Pandey.
- Make sure to choose books that are recommended by experts and have good reviews.

4. Coaching Institutes:
- Many coaching institutes offer specialized courses and study material for UPSC optional subjects, including Botany.
- Research and find reputable coaching institutes that provide comprehensive study material, classroom lectures, and guidance for Botany.
- Enrolling in such coaching institutes can be beneficial as they provide a structured approach to studying and preparing for the UPSC exam.

Remember, it is important to cover the entire syllabus for the Botany optional subject and focus on understanding the concepts thoroughly. Regular practice through mock tests and solving previous year question papers will also help you gauge your preparation level and improve your performance in the exam.