Gentiana lutea L.地下部の生長による内部形態のちがい

概要

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The medicinal parts of "Gentian," the roots and rhizomes of Gentiana lutea L., have diameters ranging from 3 mm to 80 mm. So far, microscopic studies of "Gentian" were made only on the roots of middle size. Therefore, in the present study, we conducted microscopic studies of the internal structure of every part of "Gentian" and found the following characters. In the roots of average size, outer cortex is not present, and the vessels radiate in xylem, whereas in narrower roots, an outer cortex exists, and the vessels are scattered in xylem. In rhizomes, the collenchyma cells are arranged in rings like annual rings in cortex, and the vessels are scattered in xylem. The root trace starts at xylem, and the leaf trace starts at pith. The vessels in the leaf trace are generally narrow (diameter of the narrowest one, 10 μm), and some are spiral. Many sieves distribute evenly in the pith.
日本生薬学会の論文
1994-06-20