| padus | old name for shadowloving tree | oude naam voor schaduwminnende boom | Prunus padus |
| peacockii | after M. Peacock | naar M. Peacock | Guzmania peacockii |
| palmatum | handshaped | handvormig | Acer palmatum |
| palustris | living in the marsh | moerasbewonend | Caltha palustris |
| panduriforme | violin shaped | vioolvormig | Philodendron panduriforme |
| paniculata | like bunch | pluimvormig | Gypsophila paniculata |
| papyrifera | delivering paper | papier leverend | Betula papyrifera |
| papyrus | paper | papier | Cyperus papyrus |
| parker | after R. Parker | naar R. Parker | Achillea filipendula 'Parker's var.' |
| parviflora | with small flowers | kleinbloemig | Aesculus parviflora |
| patulus, -a, -u | open, widely spread | openstaand, wijd vertakt | Tagetus patula |
| pauciflora | with little flowers | met weinig bloemen | Corylopsis pauciflora |
| peltatum | shield shaped | schildvormig | Pelargonium peltatum |
| pendula | hanging | hangend | Betula pendula=verrucosa |
| pentaphylla | leave divided in five | vijftallig blad | Akebia pentaphylla |
| pentandra | with five stamen | met vijf meeldraden | Tamarix pentandra |
| pepo | melon | meloen | Cucurbita pepo |
| perennis, -e | perennial | overblijvend | Bellis perennis |
| perforatum | leaves perforated with glands | blad geperforeerd met kleine kliertjes | Hypericum perforatum |
| periclymenum | old name for climber | oude naam voor klimmer | Lonicera periclymenum |
| perofskianum | after W.A. Perofsky | naar W.A. Perofsky | Erysimum perofskianum |
| persifolia | peach leaved | perzikbladig | Campanula persifolia |
| persicus, -a, -um | Persian | Perzisch | Parrotia persica |
| peruvianum | from Peru | uit Peru | Heliotropium peruvianum = Heliotropium arborescens |
| petiolaris | with well developed leave-stem | met goed ontwikkelde bladsteel | Hydrangea petiolaris |
| pfitzeriana | after E.H.J. Pfitzer | naar E.H.J. Pfitzer | Juniperus chinensis 'Pfitzeriana' |
| pictus, -a, um | multicoloured | bont | Dieffenbachia picta |
| pimpinellifolia | with leaves of Pimpinella | met blad van Pimpinella | Rosa pimpinellifolia |
| pinguifolia | with thick fleshy leaves | met dikvlezige bladeren | Hebe pinguifolia |
| pinnata | finned | gevind | Mahonia pinnata |
| pinsapo | old spanish for Pinus | oude Spaans voor Pinus | Abies pinsapo |
| pisifera | carrying peas | erwtdragend | Chamaecyparis pisifera |
| plantagineum | like Plantago | weegbreeachtig | Doronicum plantagineum |
| planum | even, flat | vlak, plat | Eryngium planum |
| platanoides | like plane tree | plataanachtig | Acer platanoides |
| platycentra | with wide/flat spores | met brede/platte spoor | Cupheaplatycentra |
| platypetalum | with wide/flat crownleaves | met brede/platte kroonbladeren | geranium platypetalum |
| platyphylla | wide, flatleaved | breed, vlakbladig | Tilia platyphylla |
| plena | double | gevuld | Deutzia scabra 'Plena' |
| plicatus, -a, -um | plait | gevouwen | Thuja plicata |
| plumarius | featherly | veerachtig | Dianthus plumarius |
| plumosus,-a | featherly spread | veerachtig vertakt | Asparagus plumarius |
| pluricaule | many stemmed | veelstengelig | Sedum pluricaule |
| podophyllum | with stemmed leaves | met gesteelde blaadjes | Syngonium podophyllum |
| poly-- | many | veel | |
| polyantha | with many flowers | veelbloemig | Rosa polyantha |
| polybotrya | with many bunches | met veel trossen | Peperomia polybotrya |
| polychroma | with many colours | veelkleurig | Euphorbia polychroma |
| polyphyllus | with many leaves | veelbladig | Lupinus polyphyllus |
| ponticum | from the black sea | van de Zwarte Zee | Azalea ponticum |
| portenschlagiana | after F.E. Portenschlager | naar F.E. Portenschlager | Campanula portenschlagiana |
| praecox | earlyflowering | vroegbloeiend | Cytisuspraecox |
| praenitens | profilated | uitblinkend | Primula praenitens |
| pratense | growing in the fields | in weiden groeiend | Geranium pratense |
| procera | high, long | hoog, lang | Abies procera |
| procumbens | reclined | liggend | Gaultheria procumbens |
| prunifolia | with leaves of Prunus | met blad van prunus | Crataegus prunifolia |
| prezwalskii | after Prezwalskii | naar Prezwalskii | Ligularia prezwalskii |
| pseud, pseudo | false, unreal | vals onecht, schijn | |
| pseudoacorus | false Acorus | schijn Acorus | Iris pseudoacorus |
| pseudoacacia | false Acacia | schijn Acacia | Robinia pseudacacia |
| pseudoarmeria | false Armeria | schijn Armeria | Armeria pseudoarmeria |
| pseudocapsicum | false Capsicum | schijn Capsicum | Capsicum pseudocapsicum |
| pseudoplatanus | false plane | schijn plataan | Platanus pseudoplatanus |
| psittacina | coloured like a parrot | bont als een papegaai | Vriesea psittacina |
| ptarmica | plant that makes one sneeze | plant die doet niezen | Achillea ptarmica |
| pteracantha | with winglike thorns | met vleugelachtig verbrede doorns | Rosa omeiensis 'Pteracantha' |
| pubescens | soft | zacht | Betula pubescens |
| pudica | prim, to retreat when touched | preuts, bij aanraking terugtrekkend | Mimosa pudica |
| pulchella | beautiful | fraai | Gaillardia pulchella |
| pulcher | idem | idem | Aeschynanthus pulcher |
| pulcherima | very beautiful | zeer fraai | Euphorbia pulcherima |
| pulchrum | idem | idem | Elatostema pulchrum |
| pumilus, -a, -um | dwarflike | dwergachtig | Ficus pumila |
| punctata | pickled | gestippeld, fijn geknobbeld | Lysimachia punctata |
| pungens | pointed | gepunt | Elaeagnus pungens |
| purpureus, -a, -um | dark red | purperrood | Corylus maxima 'Purpurea' |
| purpureopendula | hanging dark red | hangend purperrood | Fagus sylvatica 'Purpureopendula' |
| purpusii | after J.A. Purpus | naar J.A. Purpus | Zebrina purpusii |
| pygmaea | dwarflike | dwergachtig | Picea abies 'Pygmaea' |
| pyramidalis | piramidale | piramidaal | Aconitum pyramidalis |
