臺灣植物誌之觀察（8）──白花酢醬草及其近緣種

Notes on the Flora of Taiwan (8)–Oxalis acetocella and its allies

臺灣有二種白花酢醬草（Oxalis acetocella）之近緣種，臺灣山酢醬草及大霸尖山酢醬草。後者分布於臺灣北部高海拔山區，小葉倒卵形，且裂片圓形；前者分布於臺灣中海拔山區， 小葉倒三角形，且裂片鈍狀。此二者之地下莖直徑介於白花酢醬草及山酢醬草（0. griffithii）之間。由於大霸尖山酢醬草小葉之葉長大於葉寬，在相關種類裡是特殊的一羣，因此處理為白花酢醬草之亞種。而臺灣山酢醬草之小葉長度，整體而言較之山酢醬草來得短，因此處理為山酢醬草之變種。

There are two taxa related to Oxalis acetocella in Taiwan, which are treated as O. acetocella ssp. taemoni and O. acetocella ssp. griffithii var. formosana seperately. The former is characterized by the leaflets having round lobes and the length being longer than the width; the latter is distinctive by leaflets having obtuse lobes and the length being shorter than the width and the size of leaflets is smaller when compared to O. acetocella ssp. griffithii var. griffithii. The diameter of rhizome of these two taxa are intermediate between O. acetocella and O. griffithii when compared with specimens collected from Europe, Japan and China.