medicinal calotropis gigantea or crown flower

aak aakda aakdanu aakdo agriculture apocynaceae background beautiful botany bud calotrope calotropis crown environment flower fresh freshness ful giant gigantea gigantic griculture healthy herb herbal herbs indian kalaunu leaf leave liliuokalani meadow medical medicine milkweed natural petal pink plant plantae plants poison poisonous pua seed swallowwort use