南(nan)瓜,一年生(sheng)蔓生(sheng)草本植物(wu),莖常(chang)節部生(sheng)根,葉柄粗壯,葉片寬卵(luan)形(xing)(xing)(xing)或(huo)卵(luan)圓形(xing)(xing)(xing),質稍柔軟(ruan),葉脈隆起,卷須稍粗壯,雌雄同(tong)株,果梗(geng)粗壯,有棱和槽,因品種而異,外面常(chang)有數條縱(zong)溝或(huo)無,種子多數,長(chang)卵(luan)形(xing)(xing)(xing)或(huo)長(chang)圓形(xing)(xing)(xing)。