台灣產血藤屬植物之組織學研究

Anatomical Studies on the Mucuna Species Native to Taiwan

血藤屬（Mucuna ）植物可用於飲片藥材，一般稱為血藤。本研究辨別並比較不同種之台灣產豆科血藤屬植物藤莖的內部構造。將乾燥藤莖經顯微橫切及縱切後、製成切片以顯微鏡觀察研究。研究顯示本屬所有植物於皮層有石細胞及木化纖維之紅色環。血藤（M. macrocarpa ）和刀豆（M. pruriens var. utilis ）於內皮層無散生木化細胞。恆春血藤（M. gigantean ）有木化細胞非連續性聚生，蘭嶼血藤（M. membranacea ）內皮層之木化細胞呈連續性、垂直性散生延伸。本研究可精確比較和確定台灣血藤屬（Mucuna ）中藥材種類的原始基原。Mucunae Caulis was used as “Xueteng” in herbal medicine in Taiwan. This study identified and compared the internal structures of the plant stems of the genus Mucuna ADANSON in the Leguminosae family native to Taiwan. The dried stems were microsectioned in transverse and longitudinal direction for the microscopic studies. Micromorphological studies showed mucunae species that had reddish rings with stone cells and lignified fibers at the cortex layers outer. In the inner cortex layer, M. macrocarpa and M. pruriens var. utilis had no scattering lignified cells. M. gigantea had lignified cells sporadically congregated and the lignified cells of M. membranacea were spread vertically and continuously. Using this method, the original sources of Mucuna Caulis native in Taiwan could be compared and identified precisely.