Jump to genus: Pachycudonia, Pachyella, Packera, Paeonia, Panaeolina, Panaeolus, Panellus, Panicum, Pannaria, Panus, Papaver, Parameconopsis, Parapholis, , Parasola, Parietaria, Parmelia, Parmotrema, Parnassia, Parthenocissus, Pascopyrum, Paspalum, Pastinaca, Paulownia, Paxillus, Paxistima, Pectiantia, Pectocarya, Pedicularis, Pediocactus, Pellaea, Peltandra, Peltigera, Peniophora, Pennisetum, , Penstemon, Pentaglottis, Pentagramma, Perenniporia, Perideridia, Persicaria, Pertusaria, Petasites, Petrophytum, Petroselinum, Peziza, Phacelia, Phaeocollybia, , Phaeolepiota, Phaeolus, Phaeophyscia, Phalaris, Phallus, Phegopteris, Phellinopsis, Phellinus, Phellodon, Phemeranthus, Philadelphus, Phlebia, Phleum, Phlox, Phoenicaulis, Pholiota, Photinia, Phragmites, Phyla, Phyllodoce, Phylloporus, Phyllospadix, Phyllotopsis, Physalis, Physaria, Physcia, Physocarpus, Physostegia, Phyteuma, Phytolacca, Picea, Picipes, Picris, Pilophorus, Pilularia, Pinguicula, Pinus, Piptatheropsis, Piptoporus, Pisolithus, Pithya, Pityopus, Plagiobothrys, Plagiomnium, Plantago, Platanthera, Platanus, Platismatia, Plectania, Plectritis, Pleiacanthus, Pleopsidium, Pleuricospora, Pleurocybella, Pleuropogon, Pleurotus, Plicaria, Plicatura, Pluteus, , Poa, Podagrostis, Podaxis, Polanisia, , Polemonium, Polycarpon, Polycauliona, Polyctenium, Polygala, Polygonum, Polyozellus, Polypodium, Polypogon, , Polyporus, Polystichum, Polytrichum, Pontederia, Populus, Porella, Porodaedalea, Porphyrellus, Portulaca, Potamogeton, Potentilla, Poteridium, Poterium, Primula, Proboscidea, Prosartes, Protopannaria, Protoparmeliopsis, Prunella, Prunus, Psathyrella, Psathyrostachys, Pseudaleuria, Pseudoarmillariella, Pseudoclitocybe, Pseudocyphellaria, Pseudognaphalium, , Pseudohydnum, Pseudoinonotus, Pseudoplectania, Pseudoroegneria, Pseudosasa, Pseudoscleropodium, Pseudostellaria, Pseudotsuga, Psilocarphus, , Psilocybe, Psora, Psoroma, Pteridium, Pterospora, Puccinellia, Purshia, Pycnoporellus, Pycnoporus, Pyracantha, Pyrola, Pyrrocoma, Pyrus
