ABSTRACT
Botanical origin is one of the most important subjects for ensuring the quality of crude drugs. In this review the author discusses plant parts for medicinal use, especially their Latin names, and scientific names for original crude drug plants.<br>In Japanese Pharmacopoeia (JP) there are several crude drugs whose Latin names are controversial. For example, Opiopogonis Tuber should be corrected to Opiopogonis Radix. The descriptive style of scientific plant specie names in JP is often different from that adopted in taxonomy. A table showing differences between the two styles is given. Examples of crude drugs are given, in which additional plant species are defined in the 16 th JP based on the research work with market samples. Also, comparisons of the botanical origins of crude drugs are made between JP and CP (Chinese Pharmacopoeia).