綜合描述
單體珊瑚,珊瑚體質堅硬,表面具有明顯孔洞及許多小棘狀突起,觸感類似砂紙,珊瑚體外觀略呈圓形或葫蘆狀,基部膨大,珊瑚體中段緊縮,接近珊瑚孔處又逐漸膨大。珊瑚體平均直徑約10~15 mm,高8~12 mm。珊瑚體底部扁平,底部中心處具有1~2個由星蟲動物棲息形成之孔洞,孔洞直徑約1~6 mm,側邊著生數個隨機排列的小孔洞,孔洞直徑約0.8~0.9 mm。珊瑚體具有5組 (S1~S5)隔片,呈六放排列。S1與S2大小相似,表面具有顆粒狀突起,末端與中柱連接;S3長度約S1的1/4;S4和S5呈Pourtalès排列,末端與中柱連接。中柱由數根針柱狀或片柱狀突起組成,呈紡綞形,直徑約4~7 mm。肋片不明顯。
參考文獻
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