close up of flower spike of pickerel weed

aquatic plant beauty nature cordata flower flowering pickerel weed fresh heart herzblacurren ttriges hechtkraut hydrophyte monocotyledon pickerelweed pontederia pontederiaceae purple shallow water surface bloom blossom blue closeup cultivated europe feeding flora heartleaved spearmoss inflorescence leaf lilac macro ornamental perennial pink alumroot pollination pond pretty red shining pondweed soldier