purple flowers of monochoria hastata (l.) solms

aquatic arrowleaf background beautiful beauty black bloom blossom blue close cluster dew drop false falsepickerelweed flora floral flower fresh freshness green hastata heartleaf hyacinth hydrophyte isolated leaf macro monochoria natural nature outdoor ovalleafed panicle petal pickerelweed plant pondweed pontederiaceae purple solms thai thailand tropical vaginalis violet water weed