floating leaves of salvinia natans and hydrocharis morsus-ranae

annual aquatic bit botanical botany colorful common daylight distributed european fern floating flora fresh frog frogbit green herb herbaceous horizontal hydrocharis hydrocharitaceae leaves marsh morsus morsusranae moss natans native natural nature outdoor outside photography plant pond ranae reserve roots salvinia salviniaceae serbia serbian special standing swamp vascular water watermoss widely zasavica