Santa Cruz Waterlily

Victoria cruziana

"Victoria cruziana" is a tropical species of flowering plant, of the Nymphaeaceae family of water lilies native to South America, primarily Bolívia, Argentina and Paraguay. The plant is a popular water garden plant in botanical gardens where its very large leaves can reach their fullest, up to 2 m wide with a thick rim up to 20 cm high.
Victoria cruziana - Flower cross section Plantentuin, Meise.  Belgium,Geotagged,Spring,Victoria  cruziana,Victoria cruziana

Appearance

It can be grown in cooler waters than its sister within the genus, the more familiar giant waterlily, "Victoria amazonica". A 25 cm diameter flower blooms for two days, arising from the underwater bud, as a white flower that turns to a deep pink on the second and final day of its bloom. "V. cruziana" is a thermogenetic or heat-producing plant. The plant prefers to live in colder non moving water and requires warm temperatures in order for the flower to blossom, hence the plant must distribute a lot of energy to keep itself warmer than its natural environment. The floral stigma are attached to a cup that is protected by spines, and the floral cup begins heating up in the bud, then, as the flower opens, it releases a strong sweet scent to attract pollinating beetles, then continues to provide heat to the flower while the beetles are pollinating.

References:

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Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassEudicots
OrderNymphaeales
FamilyNymphaeaceae
GenusVictoria
SpeciesV. cruziana
Photographed in
Belgium