樹木圖鑑長角豆Ceratonia siliqua · Fabaceae外觀葉長10~20cm的羽狀複葉,頂生小葉有時有、有時無。花秋季許多小花聚生,在老枝和莖幹的短枝上排成柔荑狀總狀花序,由風和昆蟲共同授粉。果實細長扁平的莢果直或彎曲,縫線增厚;堅硬的莢內有可食的果肉和種子。樹皮樹皮質地粗糙。生長環境原產地原產南歐和北非。生態雄花散發刺鼻氣味,吸引蜜蜂、蝴蝶、蒼蠅和胡蜂。參考資料국립수목원 국가표준식물목록(KPNI 웹 조회)NC State Extension Plant ToolboxOnline Etymology Dictionary(etymonline)Turnbull, Santamaria, Martorell, Rallo & Hector, 'Seed size variability: from carob to carats', Biology Letters 2006 (Royal Society, PMC)