Tinkturenpresse

Victoria cruziana Orb. - Nymphaeaceae - Santa Cruz water lily, Santa-Cruz-Riesenseerose

Water plant; native to South America (Bolívia, Argentina Paraguay), often cultivated at botanical gardens; leaves bright green pads up to 2 m wide, rims thick, upturned leaf margins, up to 20 cm high (distinguishing it from its close relative Victoria amazonica); flowers arising from underwater bud, up to 25 cm in diam., floating, creamy-white on opening, becoming light pink on the second night (after pollination), thermogenetic (heat-producing), with strong sweet scent. „Pollination is carried out by a beetle (Cylocephata castaneal), which is attracted by the floral scent.“
http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:605778-1

„… Victoria cruziana was investigated as a model night-blooming water lily for floral scent biosynthesis. Four volatile compounds, including three benzenoids and one fatty acid methyl ester methyl hexanoate, were detected from the flowers of V. cruziana during their first bloom, with methyl hexanoate accounting for 45 % of total floral volatile emission. Emission rates were largely constant before significant drop starting at the end of second bloom.“
[Jiang, Yifan, et al. „Biosynthesis and emission of methyl hexanoate, the major constituent of floral scent of a night-blooming water lily Victoria cruziana.“ Phytochemistry 191 (2021): 112899]

Leaf of a Santa Cruz water lily (Victoria cruziana). Botanical Garden of Helsinki, Finland (2013)
https://commons.wikimedia.org/wiki/File:Victoria_July_2013-1.jpg, Author: Alvesgaspar, CC BY-SA 3.0