SUPPLEMENT. 
Pimenta, Lindley. 
Pimpinella, Linnzus. 
Pinanga, Blume. 
Pinckneya, L. C. Richard. 
Pinellia, Tenore. 
Pinguicula, Linnzus. 
Pinus, Linnzus. 
Pionea, Guénée. 
Piophila, Fallen. 
Piper, Linnzus. 
Piptadenia, Bentham. 
Piptanthus, D. Don. 
Piptospatha, N. E. Brown. 
Piqueria, Cavanilles. 
Piscidia, Linnzus. 
Pisonia, Linnzus. 
Pissodes, Germar. 
Pistacia, Linnæus. 
Pistia, Linnæus. 
Pisum, Linnæus. 
Pitcairnia, L’ Héritier. 
Pithecoctenium, Martius. 
Pithecolobium, Martius. 
Pittosporum, Banks. 
Placea, Miers. 
Plagianthus, Forster. 
Plagiolirion, Baker. 
Planera, Gmelin. 
Plantago, Linnæus. 
Plasmodiophora, Woronin. 
Platanus, Linnæus. 
Platycarpha, Lessing. 
Platycarpum, 
pland. 
Platycarya, Siebold and Zucearini. 
Platycerium, Desvaux. 
Platyclinis, Bentham. 
Platycodon, Alphonse de Candolle. 
Platycrater, 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. 
Pleetritis, De Candolle. 
nia, Linnæus. 
Pleospora, Rabenhorst. 
Pleroma, Don. 
Pleurogyne, Eschscholtz. 
Pleuropetalum, J. D. Hooker. 
Pleurospermum, Hoffmann. 
Pleurothallis, R. Brown. 
Plocama, Aiton. 
Plocoglottis, Blume. 
Pluchea, Cassini. 
Plumbago, Linnæus. 
Plumeria, Linnæus. 
Plusia, Freitschke. 
Plutella, Schranck. 
Poa, Linnæus. 
Podalyria, La Marck. 
— Haworth. 
anthus, Lagasca. 
Podocarpus, L’Héritier. 
Podolasia, N. E, Brown. 
Podolepis, Labillardiare. 
Humboldt and  Bon- 
| 
| 
1 
| 
Genera and their Authors— continued. 
Podophyllum, Linnzeus. 
Podopterus, Humboldt and Bonpland. 
Podostigma, Elliott. 
Podotheea, Cassini. 
Pogogyne, Bentham. 
Pogonia, Jussieu. 
Pogonopus, Klotzsch. 
Pogostemon, Desfontaines. 
Poinciana, Linnzus. 
Poiretia, Ventenat. 
Poitea, Ventenat. 
Poivrea, Commerson. 
Polanisia, Rafinesque. 
Polemonium, Linnzus. 
Polianthes, Linnzus. 
Polyalthia, Blume. 
Polyealymma, F. Mueller. 
Polycarpra, La Marck. 
Polycyenis, Reichenbach, jun. 
Polygala, Linnzus. 
Polygonatum, Adanson. 
Polygonum, Linnzus. 
Polymnia, Linnaeus. 
Polypodium, Linnzeus. 
Polyporus, Michaux. 
Polystachya, Hooker. 
Polyxena, Kunth. 
Pomaderris, Labillardiére. 
Pomaria, Cavanilles. 
Pomax, Solander. 
Ponera, Lindley. 
Pongamia, Ventenat. 
Pontederia, Linnzeus. 
Ponthieva, R. Brown. 
Populus, Linnzus. 
Porana, Burmann. 
Poranthera, Rudge. 
Porlieria, Ruiz and Pavon. 
Portea, C. Koch. 
Portlandia, P. Browne. 
Portulaca, Linnzus. 
Portulacaria, Jacquin. 
Posoqueria, Aublet. 
Potamogeton, Linnzeus. 
Potentilla, Linnæus. 
Poterium, Linnæus. 
Pothos, Linnæus. 
Pourouma, Aublet. 
Prasophyllum, R. Brown. 
Prepusa, Martius. 
Prescottia, Lindley. 
Preslia, Opitz. 
Prestoea, J. D. Hooker. 
Prestonia, R. Brown. 
Priestleya, De Candolle. 
Primula, Linnzus. 
Prionium, E. Meyer. 
Prismatocarpus, L’Héritier. 
Pritchardia, Seemann and H. Wend- 
land. ; 
Priva, Adanson. 
Prockia, Linnzus. 
Proclesia, Klotzsch. | 
Prunus, Linnezus. 
Psamma, Palisot de Beanvois. 
Psammisia, Klotzsch. 
Pseudodracontium, N. E. Brown. 
Pseudolarix, Gordon. 
Pseudopanax, C. Koch. 
Pseudotsuga, Carrière. 
Psidium, Linnæus. 
Psilotum, Swartz. 
Psoralea, Linnæus. 
Psychotria, Linngus. 
Psylla, Geoffroy. 
Ptelea, Linnens. 
Ptelidium, Thouars. 
Pteris, Linnæus. 
Pterocarpus, Linnzus. 
Pterocarya, Kunth. 
Pterodiseus, Hooker. 
Pterolobium, R. Brown. 
Pteroneurum, De Candolle. 
Pterospermum, Schreber. | 
Pterostylis, R. Brown. 
Pterygodium, Swartz. | D. 
Ptilomeris, Nuttall. B 
Ptychosperma, Labillardiére. __ 
Puccinia, Persoon. ; GE 
Pueraria, De Candolle. 
Pulmonaria, Linnæus. 
Pultenæa, Smith. 
Punica, Linnæus. 
Pupalia, Jussieu. 
Purshia, De Candolle. 
Puschkinia, Adams. 
Putoria, Persoon. 
Putterlickia, Endlicher. 
Puya, Molina. 
Pyenostachys, Hooker. 
Pyralis, Linneus. 
. 
Quassia, Linneus. 
Quekettia, Lindley. ` 
Re 
Ramondia, L.C. Richard. ° + 
Ramularia, Unger. ———— 
