fresh water

Duck potato Sagittaria latifolia botanical illustration by Lizzie Harper showing underwater “potato” growths

Fool’s water-cress Apium nodiflorum with seed and flower detail

Greater Bird’s-foot trefoil Lotus pendunculatus or Lotus uliginosus with calyx detail

Gypsywort Lycopus europaeus with detail of flower calyx and seed

Water fern Azolla filiculoides shown floating with water repelling properties

Water figwort Scrophularia auriculata with detail of flower stem and seed

Water forget-me-not Myosotis scorpiodes showing growth habit

Water-pepper Persicaria hydropiper or Polygonum hydropiper

Water-violet Hottonia palustris showing submerged leaves

Amphibious bistort Polygonum amphibium floating form in flower

Brooklime Veronica beccabunga in flower showing red stem

Celery-leaved buttercup Ranunculus sceleratus showing whole plant and roots

Common butter-bur Petasites hybridus with male flowers inflorescence

Common duckweed Lemna minor showing plant growing and close up of flower

Great yellow-cress Rorippa amphibia with detail of seed and flower

Ivy-leaved water crowfoot Ranunculus hederaceus showing sprawling habit

Skullcap Scutellaria galericulata showing distinctive blue flowers

Water soldier Stratiotes aloides showing emergent leaves

Marsh horsetail Equisetum palustre with strobili growing in shallow water or marshland.

Trout swimming Salmo trutta seen from above on a sandy river bottom, demonstrating carangiform movement

Medicinal leech Hirudo medicinalis cut to white, swimming and in motion

Pond skater Gerris lacustris

Stonefly larva Plecoptera cut to white

Stonefly larva on dand and pebbles river or pond or stream substrate, with drop shadow