北海道産生薬の生薬植物学的研究(第2報) : 道内産エゾムラサキツツジと中国産「満山紅」の生薬学的研究

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Rhododendron dauricum L. (Ericaceae), (Japanese name Ezomurasakitutuzi) grows wild in the eastern part of Siberia, Inner Mongolia, the northeastern part of China, Korea and Hokkaido. This plant has never been used as a medicine in Japan. But in Chinese folk medicine, dried leaves of R. dauricum, collected in autumn or in winter are called "Manshanhong" (満山紅), and are used as a cough-expectorant or as a remedy for acute-chronic bronchitis. Extract preparations of the leaves are now commercially available in Harbin. Several samples of R. dauricum collected in Hokkaido, "Manshanhong" obtained in Harbin, and two Rhodorastum plants, R. mucronulatum TURCZ. var. ciliatum NAKAI (Japanese plant name Genkaitutuzi) and R. mucronulatum TURCZ. (Japanese plant name Karamurasakitutuzi) were subjected to comparative morphological studies with special reference to the appearance such as color and shape of leaves, and phylloid index and to the internal structures such as the density of glandular scale, and general characteristics of stoma, multicellular bristle hair, palisade and spongy tissue, vascular bundle of midrib and petiole. The results of the morphological studies did not show that "Manshanhong" and leaves of Ezomurasakitutuzi of Hokkaido were identical. However, "Manshanhong" may still be considered as the leaves of a variety of Ezomurasakitutuzi, since the leaves of the plant tend to take quite varied morphological characteristics.
日本生薬学会の論文
1984-12-20

北海道産生薬の生薬植物学的研究(第2報) : 道内産エゾムラサキツツジと中国産「満山紅」の生薬学的研究

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