1977年台灣植物誌第三卷309頁所述之三葉木藍實為兩種植物的混合體,其中之一之模式標本產自印度,名為長梗木藍者,文中也比較兩種之不同點。
Huang and Ohashi (1977) in Flora of Taiwan (3: 309) have described Indigofera trifoliata L. based on Hosokawa 3271 from Pingtung, and Hsu 9441, Kao 7682 and Huang 353 from Taitung which when critically examined revealed an admixture of two different species viz., lndigofera trifoliata L. and I. pedicellata Wt. & Arn. The latter species was first described by Wight and Arnott (1834) from Peninsular lndia and was considered to be endemic. It is interesting to note the occurrence of this specejes in Taiwan and therefore a detailed description and its differences with the allied species are given to facilitate the correct identity.