Polygonatum multiflorum
Solomon's-seal
Polygonatum odoratum
Angular Solomon's-seal
Polygonatum verticillatum
Whorled Solomon's-seal
Polygonatum x hybridum
Garden Solomon's-seal
Polypogon viridis
Water Bent
Pontederia crassipes
Water Hyacinth
Potamogeton coloratus
Fen Pondweed
Potamogeton crispus
Curled Pondweed
Potamogeton lucens
Shining Pondweed
Potamogeton natans
Broad-leaved Pondweed
Potamogeton polygonifolius
Bog Pondweed
Pseudorchis albida
Small-white Orchid
Ravenala madagascariensis
East-West Palm
Rhynchospora alba
White Beak-sedge
Rhynchospora fusca
Brown Beak-sedge
Romulea columnae
Sand Crocus
Ruppia maritima
Beaked Tasselweed
Ruscus aculeatus
Butcher's-broom
Sagittaria sagittifolia
Arrowhead
Schedonorus giganteus
Giant Fescue
Scheuchzeria palustris
Rannoch-rush
Schismatoglottis calyptrata
Dukaruk
Schizostylis coccinea
Kaffir Lily
Schoenoplectus lacustris
Common Club-rush