G Book | Wang: Genetics, Genomics and Breeding of Cucurbits
p. 6: Fig. 1-1
Sanjur, p. 8
"Schaefer (2009) showed an Asian origin of cucurbitaceae in the Late Cretaceous, followed by the repeated spread of lineages into the African, American and Australian continents vie transoceanic long-distance dispersal."
"North American cucurbits stem from at least seven range expansions of Central and South American lineages; Madagascar was colonized 13 times, always form Africa; Australia was reached 12 times, apparently always from Southeast Asia. overall, cucurbitaceae underwent at least 43 successful long-distance dispersal events over the past 60 million years (fig 1-1)."
The Mayans developed a distinct landrace called Semiolne pumpkin.
Asia: bitter gourds
Lagenaria sciceria - African origin but domesticated throughout india as tender vegetable.
Table 2-1 p. 19