In order to clarify the botanical origin and morphological properties of the Chinese drug “San cha-tsu” (_??__??__??_) imported into Japan, external and internal structure, difference, and characteristics of false fruit were examined in Crataegus cuneata SIEB. ET ZUCC. (Figs. 1-15), C. pinnatifida BUNGE (C. oxyacantha L. var. pinnatifida (BUNGE) REGEL) (Figs. 16-23), and C. oxyacantha L. (Figs. 29-39). These were compared with some kinds of Crataegus drugs with different Chinese names.
It was thereby found that the crude drugs in the Japanese market are of two kinds, those of C. cuneate and C. pinnatifida. There were no false fruits which could be taken as those of C. oxyacantha.