SUPPLEMENT. 
267 
Genera and their Authors— continued. 
Pimenta, Lindley. 
Pimpinella, Linnzus. 
Pinanga, Blume. 
Pinckneya, L. C. Richard. 
Pinellia, Tenore. 
Pingnicula, Linneus. 
Pinus, Linneus. 
Pionea, Guénée. 
Piophila, Fallén. 
Piper, Linnzeus. 
Piptadenia, Bentham. 
Piptanthus, D. Don. 
Piptospatha, N. E. Brown. 
Piqueria, Cavanilles. 
Piscidia, Linnzus. 
Pisonia, Linnzus. 
Pissodes, Germar. 
Pistacia, Linnzus. 
Pistia, Linnzus. 
Pisum, Linnzus. 
Piteairnia, L’ Héritier. 
Pithecoctenium, Martius. 
Pithecolobium, Martius. 
Pittosporum, Banks. 
Placea, Miers. 
Plagianthus, Forster. 
Plagiolirion, Baker. 
Planera, Gmelin. 
Plantago, Linnzeus. 
Plasmodiophora, Woronin. 
Platanus, Linnzeus. 
Platycarpha, Lessing. 
Platyecarpum, Humboldt 
pland. 
Platyearya, Siebold and Zuecarini. 
Platycerium, Desvaux. 
Platyclinis, Bentham. 
Platycodon, Alphonse de Candolle. 
Platyerater, Siebold and Zuccarini. 
Platylepis, A. Richard. 
Platylobium, Smith. 
Platylophus, Don. 
Platypetalum, Brown. 
Platystemon, Bentham. 
Platystigma, Bentham. 
Platytheca, Steetz. 
Platyzoma, Brown. 
Plectocomia, Martius and Blume. 
Plectranthus, L’ Héritier. 
Plectritis, De Candolle. 
Plectronia, Linneus. 
Pleea, Michaux. 
Pleospora, Rabenhorst. 
Pleroma, Don. 
Pleurogyne, Eschscholtz. 
Pleuropetalum, J. D. Hooker. 
Pleurospermum, Hoffmann. 
Pleurothallis, R. Brown. 
Plocama, Aiton. 
Plocoglottis, Blume. 
Pluchea, Cassini. 
Plumbago, Linnzus. 
Plumeria, Linnzus. 
Plusia, Freitschke. 
Plutella, Schranck. 
Poa, Linnzus. 
Podalyria, La Marek. 
Podanthes, Haworth. 
Podanthus, Lagasca. 
Podocarpus, L’ Héritier. 
Podolasia, N. E. Brown. 
Podolepis, Labillardiére. 
and Bon- 
Podophyllum, Linnzeus. 
Podopterus, Humboldt and Bonpland. 
Podostigma, Elliott. 
Podotheea, Cassini. 
Pogogyne, Bentham. 
Pogonia, Jussieu. 
Pogonopus, Klotzsch. 
Pogostemon, Desfontaines. 
Poinciana, Linnzeus. 
Poiretia, Ventenat. 
Poitwa, Ventenat. 
Poivrea, Commerson. 
Polanisia, Rafinesque. 
Polemonium, Linnzeus. 
Polianthes, Linnzus. 
Polyalthia, Blume. 
Polycalymma, F. Mueller. 
Polyecarpea, La Marck. 
Polycyenis, Reichenbach, jun. 
Polygala, Linnzus. 
Polygonatum, Adanson. 
Polygonum, Linnzus. 
Polymnia, Linnzus. 
Polypodium, Linnzeus. 
Polyporus, Michaux. 
Polystachya, Hooker. 
Polyxena, Kunth. 
Pomaderris, Labillardiére. 
Pomaria, Cavanilles. 
Pomax, Solander. 
Ponera, Lindley. 
Pongamia, Ventenat. 
Pontederia, Linnzus. 
Ponthieva, R. Brown. 
Populus, Linnzenus. 
Porana, Burmann. 
Poranthera, Rudge. 
Porlieria, Ruiz and Payon. 
Portea, C. Koch. 
Portlandia, P. Browne. 
Portulaca, Linnegeus. 
Portulacaria, Jacquin. 
Posoqueria, Aublet. 
Potamogeton, Linnzus. 
Potentilla, Linnzus. 
Poterium, Linnzeus. 
Pothos, Linnzus. 
Pourouma, Aublet. 
Prasophyllum, R. Brown. 
Pratia, Gaudichaud. 
Premna, Linnzus. 
Prenanthes, Linnzus. 
Prepusa, Martius. 
Prescottia, Lindley. 
Preslia, Opitz. 
Prestoea, J. D. Hooker. 
Prestonia, R. Brown. 
Priestleya, De Candolle. 
Primula, Linneus. 
Prionium, EH. Meyer. 
Prismatocarpus, L’ Héritier. 
Pritchardia, Seemann and H. Wend- 
land. 
Priva, Adanson. 
Prockia, Linnzeus. 
Proclesia, Klotzsch. 
Pronaya, Hiigel. 
Proserpinaca, Linnus. 
Prosopis, Linnzus. 
Prostanthera, Labillardiére. 
Protea, Linneeus. 
Proustia, Lagasca. 
| 
Prunella, Linnaeus. 
Prunus, Linnzus. 
Psamma, Palisot de Beauvois. 
Psammisia, Klotzsch. 
Pseudodracontium, N. E. Brown. 
Pseudolarix, Gordon. 
Pseudopanax, C. Koch. 
Pseudotsuga, Carriére. 
Psidium, Linnzus. 
Psilotum, Swartz. 
Psoralea, Linnzus. 
Psychotria, Linneus. 
Psylla, Geoffroy. 
Ptelea, Linnzus. 
Ptelidium, Thouars. 
Pteris, Linnzus. 
Pterocarpus, Linnzus. 
Pterocarya, Kunth. 
Pterodiseus, Hooker. 
Pterolobium, R. Brown. 
Pteroneurum, De Candolle. 
Pterospermum, Schreber. 
Pterostylis, R. Brown. 
Pterygodium, Swartz. 
Ptilomeris, Nuttall. 
Ptychosperma, Labillardiére. 
Puccinia, Persoon. 
Pueraria, De Candolle. 
Pulmonaria, Linneeus. 
Pultenwa, Smith. 
Punica, Linnus. 
Pupalia, Jussieu. 
Purshia, De Candolle. 
Puschkinia, Adams. 
Putoria, Persoon. 
Putterlickia, Endlicher. 
Puya, Molina. 
Pyenostachys, Hooker. 
Pyralis, Linneus. 
Pyrethrum, Gaertner. 
Pyrola, Linnzus. 
Pyrularia, Michaux. 
Pyrus, Linnzeus. 
Pythium, Nees. 
Pyxidanthera, Michaux. 
Qualea, Aublet. 
Quaqua, N. E. Brown. 
Quassia, Linnzeus. 
Quekettia, Lindley. 
Quercus, Linneeus. 
Quesnelia, Gaudichaud, 
Quillaja, Molina. 
Quisqualis, Linnzus. 
Quivisia, Commerson. 
Rafnia, Thunberg. 
Raillardia, Gaudichaud. 
Ramondia, L. C. Richard. 
Ramularia, Unger. 
Randia, Linnzeus. 
Ranuneulus, Linneeus. 
Raphanus, Linnzus. 
Raphia, Palisot de Beanvois. 
Raphistemma, Wallich. 
Raspalia, Brongniart. 
Ratonia, De Candolle. 
Rauwolfia, Linnzeus. 
Ravenala, Adanson,. 
Ravenea, Bouché. 
