Bitter orange - online puzzles

Bitter orange

Bitter orange, sour orange, Seville orange, bigarade orange, or marmalade orange is (sensu stricto) the citrus tree Citrus × aurantium and its fruit. It is native to Southeast Asia and has been spread by humans to many parts of the world. It is probably a cross between the pomelo, Citrus maxima, and the mandarin orange, Citrus reticulata.