Sometimes, people confuse longan fruit with Lychees. Both are white-fleshed tropical fruit. However, longan is smaller in size. It appears with smooth and brown skin. In contrast, lychees have bumpy outer skin with a pinkish colour. In addition, longans have a musky flavour, whereas; lychees have a fragrant, floral taste. Longan contains 60 calories per 100 grams of serving from a nutritional standpoint, whereas lychees have 66 calories. Furthermore, it has more vitamin C as well.