is a quarterly Japanese-language periodical and the official publication of the Insectivorous Plant Society of Japan. The journal was established in January 1950. As of 2010, it was published in A4 format and totals around 120 pages annually. The English title has been used alongside the original Japanese one from the April 1986 issue onwards.
Typical articles include matters of horticultural interest, field reports, literature reviews, and new taxon and cultivar descriptions. They are usually entirely in Japanese, although species descriptions may also be in English.
The Journal of Insectivorous Plant Society has published formal descriptions of the following taxa.
The journal also published the following Nepenthes cultivar names of the 'Koto' series by K. Kawase.