車前草の生薬学的研究(第6報) : 北海道産Plantago majorの形態について

概要

論文の詳細を見る
In Sapporo City, both Plantago major and P. asiatica are widely distributed. They are reported to require the same habitable conditions and accordingly to grow in the same area in this city. These two species are similar in the external characters and therefore there is a possibility that P. major or its seeds are erroneously mixed with proper plantaginis herba or plantagnis semen. It is reported that P. major has no petiole and the seeds are small. But detailed anatomical studies have not been made yet. So, this comparative anatomical research was conducted. In P. major, the seeds were small, the number of seeds per one capsule was 12.5 ± 1.7 and the pigment layer cells of the seeds were rectangular in shape. The epidermal cells of the leaves of P. major were smaller, the endodermis of the petiole and the vein of the leaf blades were thinner and the numbers of the epidermal cells and of the stomata per unit area were higher than the corresponding ones of P. asiatica. As a result, P. major was shown to be clearly distinguishable from P. asiatica with a microscope.
日本生薬学会の論文
1990-09-20