Name: Two oldest living plants.

Answer

**Step-by-Step Solution:**

1. **Identify the Question:** The question asks for the names of the two oldest living plants.

2. **Research the Oldest Living Plants:** Based on biological studies and records, we find that two of the oldest living plants belong to the genus Pinus.

3. **Name the First Plant:** The first plant is **Pinus longaeva**, commonly known as the Great Basin bristlecone pine. It is found in the White Mountains of California.

4. **Name the Second Plant:** The second plant is **Pinus aristata**, known as the Rocky Mountain bristlecone pine. This species is found in the Snake Range of eastern Nevada.

5. **Provide Additional Information:** Both of these plants are believed to be around 5,600 years old, making them some of the longest-living organisms on Earth.

6. **Summarize the Findings:** In summary, the two oldest living plants are:
- **Pinus longaeva** (Great Basin bristlecone pine)
- **Pinus aristata** (Rocky Mountain bristlecone pine)

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