鬼針屬植物爲世界性的雜草，台灣最常見爲大花咸豐草，其次是白花鬼針及小白花鬼針，本研究之試驗材料爲小白花鬼針及採集自屏東之屏東小白花鬼針，經過三年的持續觀察確認爲屏東小白花鬼針爲小白花鬼針天然所產生之變異，主要特徵爲葉子呈現非均質性白化，可作爲觀賞之用途。

Bidens plants (Asteraceae) are worldwide weeds and expand extensively all over the world. The most familiar Biden species in Taiwan is Bidens pilosa var. radiate, and then the other two are B. pilosa var. minor and B. pilosa var. pilosa. New biotype B. pilosa var. minor, Pingtung, collected from Pingtung, Taiwan after investigation for more than three years, is confirmed as a natural variant derived from B. pilosa var. minor. This new biotype has uneven white color on leaf surface which might increase its decoration value.