aquatic flower
aquatic herbs
beautiful
beautiful scenery
beauty in nature
biology
blossom
blue
blue purple
closeup
colorful
creature
cross map
ecology
flowers
full bloom
green
heilongjiang
herb
herbaceous
inflorescence
leaves
lush
medicinal
monochoria
natural
natural phenomena
ornamental plant
outdoor
plants
pond
pontederiaceae
spike
stamens
summer
sunlight
tint
unmanned
wet grassland
wetland
wetlands