Dimocarpus longan, commonly known as the longan is a tropical tree that produces edible fruit. The longan (from Cantonese lùhng-ngáahn 龍眼, literally "dragon eye"), is so named because it resembles an eyeball when its fruit is The flesh has a musky, sweet taste, which can be compared to the flavor of lychee biosphaere.info: Sapindaceae. How to Tell if a Dragon Fruit Is Ripe. Dragon fruit, or pitaya, are cactus fruit that come in three types. They can have either red or yellow skin. For the first time, I was able see and taste the syrupy sweet opalescent fruit The Vietnamese riddle aptly describes the experience of Longan fruit: Da cóc mà. I love eating longan fruit, it tastes better than lychee fruit. Longan scientific name is Dimocarpus longan and. When is the Dragon Fruit Ripe? Ripe Dragon Fruit. ready to pick. .. Excellent camouflage of a hawk moth sphinx moth with glowing eyes. How to Tell if a Dragon Fruit Is Ripe. Dragon fruit, or pitaya, are cactus fruit that come in three types. They can have either red or yellow skin.