Nymphaeaceae by Kordouane

Photography • Flowers/Plants • posted on Jan 21, 2018

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Description

Horticulturally, water lilies have been hybridized for temperate gardens since the 19th century, and the hybrids are divided into three groups: hardy, night-blooming tropical, and day-blooming tropical water lilies. Hardy water lilies are hybrids of Nymphaea species from the subgenus Castalia; night-blooming tropical water lilies are developed from the subgenus Lotos; and the day-blooming tropical plants arise from hybridization of plants of the subgenus Brachyceras. Water lilies do not have surface leaves in the winter time, and therefore the gases in the rhizome lacunae access equilibrium with the gases of the sediment water. The leftover of internal pressure is embodied by the constant streams of bubbles that outbreak when rising leaves are ruptured in the spring. Methane is still penetrating the roots and rhizome in the summer, moving fast up the petioles, and goes out over the emergent leaves into the atmosphere.