Tsukuba Jikken Shokubutsuen 25 nen shokubutsu tayŏshŏ wo shiri, mamori, tsutaeru : past 25 years = Tsukuba Botanical Garden 25 years : our mission is to investigate and conserve plant diversity and to disseminate knowledge about plants and their value to humanity : to the future (Kokuritsu Kagaku Hakubutsukan (Japan) Tsukuba Jikken Shokubutsuen, 2008)