Labu manis merupakan tumbuhan semusim dari famili Cucurbitaceae (suku labu-labuan). Spesies ini memiliki kebiasaan tumbuh menjalar. Tumbuhan ini berasal dari bioma beriklim subtropis dan merupakan hasil kultivasi dari Bolivia hingga Argentina bagian utara. Nama ilmiah Cucurbita maxima pertama kali dipublikasikan oleh botanis Antoine Nicolas Duchesne pada tahun 1786.
Cucumis rapallito (Carrière) Carrière Cucurbita maxima brasiliensis Harz Cucurbita maxima cancroides Harz Cucurbita maxima castanina Harz Cucurbita maxima cercuraicensis Harz Cucurbita maxima convar. ecoronata Alef. Cucurbita maxima convar. parvifructina Greb. Cucurbita maxima convar. semiturbana Alef. Cucurbita maxima convar. turbaniformis (M.Roem.) Alef. Cucurbita maxima elliptica Harz Cucurbita maxima farinae (Alef.) Harz Cucurbita maxima gigantea Harz Cucurbita maxima leucoderma Harz Cucurbita maxima lignosa Harz Cucurbita maxima messanensis (Alef.) Harz Cucurbita maxima rubra Harz Cucurbita maxima var. alba M.Roem. Cucurbita maxima var. ambigua Tod. Cucurbita maxima var. aromatica Alef. Cucurbita maxima var. badagarensis C.R.Mudaliar Cucurbita maxima var. boliviana Zhit. Cucurbita maxima var. brachycina Alef. Cucurbita maxima var. byzantina Alef. Cucurbita maxima var. californica Alef. Cucurbita maxima var. castanina Alef. Cucurbita maxima var. chiloensis Zhit. Cucurbita maxima var. chlorocina Alef. Cucurbita maxima var. chlorophthalma Alef. Cucurbita maxima var. clypeiformis Tod. Cucurbita maxima var. coffeisperma Alef.
POWO (2024). "Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; https://powo.science.kew.org/."
IPNI (2024). "International Plant Names Index. Published on the Internet http://www.ipni.org, The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries, and Australian National Herbarium"
USDA - NRCS (2024). "United States Department of Agriculture - Natural Resources Conservation Service", Plant Profile.
