臺灣的毛瓣蝴蝶木(C. sabiaefolia Hook. f. et Thoms.)以往的分類文獻中均將其誤定為銳葉山柑(c. acutifolia Sweet)。本研究確定毛瓣蝴蝶木的存在，並進一步確認銳葉山柑的特徵毛瓣蝴蝶木的特徵為小枝水有刺，葉薄革質，7.5至10公分長，葉脈兩面明葉基圓形，花萼內部表面密生絨毛;而銳葉山柑則是枝條有刺，葉革質或薄革質，9至16公分長，葉基銳形，葉脈不明顯，花萼光滑僅邊緣有毛絨。本文並提供它們的分類處理、繪圖、照片以供參考。

People in Taiwan have identified CApparis sabiaefolia Hook. f. et Thoms. as Capparis acutfolia Sweet. In this paper we clarify the identity of C. sabiaefolia for the flora of Taiwan and further document C. acutifolia in Taiwan C. sabiaefolia was characterized by branchlets without thorns; leves thinly herbaceous leaves, 7.5-10 cm long, base rounded, veins obscure on both sides;and densely tomentose on inner surface petals. C. acutifolia was described as branchlets with thrns; leaves coriaceous or thinly coriaceous, 9-16 cm long, base acute, veins distinct on both sides; and petals glabrous but tomentose at the margin. Taxonomic treatment, line drawing, and photographs are provided here.