Palmarosa is

Options

A. Cymbopogon martini
B. Cymbopogon nardus
C. Vetiveria zizanioides
D. Setaria italica.

Answer

**Step-by-Step Solution:**

1. **Identify the Plant**: The question asks about "Palmarosa." We need to identify its scientific name and family.

2. **Scientific Name**: The scientific name of Palmarosa is *Cymbopogon martini*. This is the first option provided.

3. **Common Names**: Palmarosa is also known by other common names such as lemongrass, ginger grass, and in some regions, it is referred to as Roche grass.

4. **Family Classification**: *Cymbopogon martini* belongs to the family Poaceae, which is the grass family.

5. **Characteristics of Palmarosa**:
- It has a sweet smell, reminiscent of roses, which is why it is called Palmarosa.
- It is used as a flavoring agent and in herbal medicine.
- The plant is also used in the production of essential oils and perfumes due to the presence of a chemical compound called geraniol.
- Additionally, it has antifungal properties, making it useful in treating fungal infections.

6. **Evaluate Other Options**:
- The second option, *Cymbopogon nardus*, is known as citronella grass, which is incorrect.
- The third option, *Vetiveria zizanoides*, is a type of grass but does not refer to Palmarosa, so it is incorrect.
- The fourth option, *Triticum italicum*, is a type of millet, which is also incorrect.

7. **Conclusion**: Based on the analysis, the correct answer to the question "Palmarosa is" is option number one, *Cymbopogon martini*.