Allium Fistulosum is also known as Welsh onion, Japanese bunching onion, and spring onion. These are all synonyms for the same plant. The Welsh onion is a type of bunching onion with long, slender leaves and a mild but distinct onion flavor. It is often used in Japanese and Chinese cuisines to add a delicate onion flavor to soups, salads, and stir-fries. Spring onions, on the other hand, are immature onions that have not yet developed a bulb. They have a milder flavor than regular onions and are often used as a garnish or added to dishes for a subtle onion flavor. Regardless of the name, Allium Fistulosum is a versatile and delicious vegetable that should not be overlooked in the kitchen.