Insectivorous Plant Society

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Logo of the Insectivorous Plant Society

The Insectivorous Plant Society (食虫植物研究会, Shokuchūshokubutsu kenkyū-kai), often abbreviated as IPS, is an organization based in Chiyoda, Tokyo, Japan. Founded in November 1949, it is likely the oldest carnivorous plant society in the world.[1][2] It celebrated its 50th anniversary in November 1999 at the Diamond Hotel in Tokyo.[2] The society is named after Charles Darwin's 1875 book, Insectivorous Plants.[1][2]

The society's chairman is Sadashi Komiya, professor emeritus of The Nippon Dental University. He is joined by the two vice chairmen, Momozo Tanaka and Yoshiyuki Sodekawa, as well as ten other committee members.[3] Total membership to the society is around 530, the vast majority from Japan.[3] The society already had around 300 members in the early 1970s.[4] Five society meetings are held each year at The Nippon Dental University, usually in the months of January, April, June, October, and November.[3]

The IPS is probably best known for its quarterly publication, The Journal of Insectivorous Plant Society, published since January 1950.[3]


  1. ^ a b Welcome to the Insectivorous Plants Society, Japan. Yoshiyuki Sodekawa's personal website.
  2. ^ a b c (in Japanese) 食虫植物研究会 The Insectivorous Plant Society(IPS,Japan) の御案内. Insectivorous Plant Society.
  3. ^ a b c d About IPS, Japan. Yoshiyuki Sodekawa's personal website.
  4. ^ D'Amato, P. 2011. The Savage Garden: "The creation and early evolution of CPN". Carnivorous Plant Newsletter 40(2): 56–59.

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