Ua manaʻo ʻia ʻo ka wahi hānau o kēia hua ma waena o India a me Burma, a ma Kina paha. Ke ulu nei i kēia manawa ma nā ʻāina e like me Sri Lanka, South India, South China a me nā ʻāina ʻē aʻe o Asia Hema. He poepoe a oval paha ka hua me ka i'o translucent a ho'okahi wale no hua 'ele'ele. Aia ka lāʻau longan i ka evergreen, ulu i ke kiʻekiʻe o 9-12 mika. He kumu waiwai ʻo Longan o nā huaora a me nā minela like ʻole. Loaʻa nā huaora B1, B2, B3, a me ka huaora C, nā minela: hao, magnesium, silicon. He kumu maikaʻi loa o ka protein a me ka fiber. Hāʻawi ka 100 g longan i ke kino me 1,3 g o ka protein, 83 g o ka wai, 15 g o nā carbohydrates, 1 g o ka fiber a me 60 mau calories. E noʻonoʻo i kekahi o nā pono olakino o ka hua longan:
- ʻIke ʻia no kona hopena hoʻōla i nā pilikia o ka ʻōpū. Kōkua ʻo Longan i ka ʻeha o ka ʻōpū, hoʻoikaika i ka ʻōnaehana pale, kahi e hiki ai i ke kino ke hakakā i nā maʻi like ʻole.
- He hopena maikaʻi kona i ka hana ʻana o ka ʻōnaehana circulatory, a me ka puʻuwai.
- He lāʻau maikaʻi no ka anemia, no ka mea, kōkua ia i ke kino e komo i ka hao.
- Aia nā lau o ka lāʻau longan i ka quercetin, nona nā waiwai antiviral a me nā antioxidant. Hoʻohana ʻia i ka mālama ʻana i nā ʻano like ʻole o ka maʻi kanesa, allergies, i ka mālama ʻana i nā maʻi cardiovascular a me ka maʻi diabetes.
- Hoʻomaikaʻi ʻo Longan i ka hana o nā aʻalolo, hoʻomaha i ka ʻōnaehana nerve.
- Aia i loko o ka kernel o ka hua nā momona, tannins a me saponins, e hana ana ma ke ʻano he hemostatic agent.
- Loaʻa ka longan i ka waika phenolic, e hana ana ma ke ʻano he antioxidant ikaika a loaʻa nā waiwai antifungal, antiviral, a me antibacterial.