Generate a list of flowers that begin with the letter 'a'.
Here is a list of flowers that begin with the letter 'a':

1. Aconitum (monkshood)
2. Agapanthus (lily of the Nile)
3. Agastache (hyssop)
4. Ageratum (flossflower)
5. Allium (ornamental onion)
6. Alstroemeria (Peruvian lily)
7. Alyssum (sweet alyssum)
8. Amaryllis 
9. Anemone (windflower)
10. Antirrhinum (snapdragon)
11. Aquilegia (columbine)
12. Armeria (sea thrift)
13. Asclepias (milkweed)
14. Aster 
15. Astilbe
Complete the following task based on the instruction and optional input provided.### Instruction:
Generate a list of flowers that begin with the letter 'a'.

### Output:
Here is a list of flowers that begin with the letter 'a':

1. Aconitum (monkshood)
2. Agapanthus (lily of the Nile)
3. Agastache (hyssop)
4. Ageratum (flossflower)
5. Allium (ornamental onion)
6. Alstroemeria (Peruvian lily)
7. Alyssum (sweet alyssum)
8. Amaryllis 
9. Anemone (windflower)
10. Antirrhinum (snapdragon)
11. Aquilegia (columbine)
12. Armeria (sea thrift)
13. Asclepias (milkweed)
14. Aster 
15. Astilbe