Plumeria pudica
Bridal Bouquet
Plumeria rubra
Frangipani
Podranea ricasoliana
Pink Trumpet Vine
Polemonium caeruleum
Jacob's-ladder
Polemonium pauciflorum
Fewflower Jacob's-ladder
Polygala calcarea
Chalk Milkwort
Polygala fruticosa
Feather Dusters
Polygala paniculata
Root Beer Plant
Polygala serpyllifolia
Heath Milkwort
Polygala vulgaris
Common Milkwort
Polygonum arenastrum
Equal-leaved Knotgrass
Polygonum aviculare
Knotgrass
Polygonum oxyspermum
Ray's Knotgrass
Polyscias fruticosa
Ming Aralia
Polyscias guilfoylei
Geranium Aralia
Populus nigra
Black-poplar
Populus tremula
Aspen
Populus x canadensis
Hybrid Black-poplar
Populus x canescens
Grey Poplar
Portulaca grandiflora
Rose Moss
Portulaca oleracea
Common Purslane
Potentilla anserina
Silverweed
Potentilla erecta
Tormentil
Potentilla gracilis
Graceful Cinquefoil