Assertion: ridged luffa | /r/HasProperty | luffa acutangula
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text: The two most popular vegetable sponge species are the ridged luffa (Luffa acutangula ), favored for its tasty fruit, and the common luffa (Luffa cylindrica or Lulls aegyptiaca ), usually grown for its one- to two-foot-long gourds.