The red capsule of Euscaphis japonica (Thunb.) Kanitz was found to contain flavonoid compounds in large quantities. One of them, isoquercitrin, was obtained in a crystalline state from the ethyl acetate extract by the application of polyamide column. Cyanidin 3-xylosylglucoside and astragalin were also identified. Besides, a considerable amount of unknown flavonol-like compound was detected in an ether extract. The above anthocyanin was found to be identical with ilicicyanin previously obtained from the fruit coat of Ilex crenata.
The vegetative shoot apex of Clethra barbinervis Sieb. et Zucc. was analyzed inssuperficial and transectional views. There is a central zone the size of which prominently fluctuates during a plastochron, its size becoming maximum in the maximal area phase of the apex, minimum in the minimal. The peripheral meristem, which consists of radially arranged files of cells, is subdivided into five zones associated with leaf primordia. Thus, the area of the apex can be divided into five sectors (sectors 0-4), each of which consists of a leaf primordium and a peripheral zone (“peripheral zone” refers to a portion of the peripheral meristem), except sector 0, in which a leaf primordium has not differentiated yet. The process of growth of a peripheral zone, which is situated between the central zone and a leaf primordium, is very complicated. This process is not simply monotonous increase but is correlated with increase and decrease of the central zone as well as the growth of its subtending leaf primordium and other sectors.