Describe three taxonomic aids useful in identification of species.

Explanation

To answer the question about three taxonomic aids useful in the identification of species, we can break down the solution into clear steps:

### Step-by-Step Solution:

1. **Herbarium**:
- A herbarium is a collection of preserved plant specimens that are systematically arranged according to their taxonomic hierarchy.
- These specimens are typically dried and mounted on sheets of paper, allowing for easy reference and study.
- Herbariums serve as a vital resource for botanists and researchers to identify and classify plant species based on their morphological features.
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