| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| PECO19 | Perityle coronopifolia Gray | crowfoot rockdaisy | Asteraceae
|
| PEDI2 | Perityle dissecta (Torr.) Gray | dissected rockdaisy | Asteraceae
|
| PEEMN | Perityle emoryi Torr. var. nuda (Torr.) Gray | Perityle emoryi | Asteraceae
|
| PEEM | Perityle emoryi Torr. | Emory's rockdaisy | Asteraceae
|
| PEFA3 | Perityle fastigiata (Brandeg.) Shinners | Perityle gracilis | Asteraceae
|
| PEFO6 | Perityle fosteri A. Powell | Foster's rockdaisy | Asteraceae
|
| PEGIG | Perityle gilensis (M.E. Jones) J.F. Macbr. var. gilensis | Gila rockdaisy | Asteraceae
|
| PEGIS | Perityle gilensis (M.E. Jones) J.F. Macbr. var. salensis A. Powell | Salt River rockdaisy | Asteraceae
|
| PEGI2 | Perityle gilensis (M.E. Jones) J.F. Macbr. | Gila rockdaisy | Asteraceae
|
| PEGR15 | Perityle gracilis (M.E. Jones) Rydb. | three-lobed rockdaisy | Asteraceae
|
| PEHA13 | Perityle halimifolia (Gray) Shinners | Perityle lindheimeri var. halimifolia | Asteraceae
|
| PEHU5 | Perityle huecoensis A. Powell | Hueco rockdaisy | Asteraceae
|
| PEIN12 | Perityle intricata (Brandeg.) Shinners | narrowleaf laphamia | Asteraceae
|
| PEIN8 | Perityle inyoensis (Ferris) A. Powell | Inyo rockdaisy | Asteraceae
|
| PELE11 | Perityle lemmonii (Gray) J.F. Macbr. | Lemmon's rockdaisy | Asteraceae
|
| PELIH2 | Perityle lindheimeri (Gray) Shinners var. halimifolia (Gray) A. Powell | Lindheimer's rockdaisy | Asteraceae
|
| PELIL | Perityle lindheimeri (Gray) Shinners var. lindheimeri | Lindheimer's rockdaisy | Asteraceae
|
| PELI3 | Perityle lindheimeri (Gray) Shinners | Lindheimer's rockdaisy | Asteraceae
|
| PEMEI | Perityle megalocephala (S. Wats.) J.F. Macbr. var. intricata (Brandeg.) A. Powell | Perityle intricata | Asteraceae
|
| PEMEM | Perityle megalocephala (S. Wats.) J.F. Macbr. var. megalocephala | Nevada rockdaisy | Asteraceae
|
| PEMEO | Perityle megalocephala (S. Wats.) J.F. Macbr. var. oligophylla A. Powell | small-leaved rockdaisy | Asteraceae
|
| PEME6 | Perityle megalocephala (S. Wats.) J.F. Macbr. | Nevada rockdaisy | Asteraceae
|
| PEMI5 | Perityle microglossa Benth. | shortray rockdaisy | Asteraceae
|
| PEPA12 | Perityle parryi Gray | Parry's rockdaisy | Asteraceae
|
| PEQU | Perityle quinqueflora (Steyermark) Shinners | fiveflower rockdaisy | Asteraceae
|
| PERO2 | Perityle rotundata (Rydb.) Shinners | Perityle lindheimeri var. lindheimeri | Asteraceae
|
| PERUA | Perityle rupestris (Gray) Shinners var. albiflora A. Powell | leafy rockdaisy | Asteraceae
|
| PERUR | Perityle rupestris (Gray) Shinners var. rupestris | leafy rockdaisy | Asteraceae
|
| PERU3 | Perityle rupestris (Gray) Shinners | leafy rockdaisy | Asteraceae
|
| PESA12 | Perityle saxicola (Eastw.) Shinners | Roosevelt Dam rockdaisy | Asteraceae
|
| PESP5 | Perityle specuicola Welsh & Neese | alcove rockdaisy | Asteraceae
|
| PESP6 | Perityle spilanthoides (Schultz-Bip.) Rydb. | Perityle microglossa | Asteraceae
|
| PEST7 | Perityle stansburii (Gray) J.F. Macbr. | Standbury's rockdaisy | Asteraceae
|
| PESTH | Perityle staurophylla (Barneby) Shinners var. homoflora T.K. Todsen | New Mexico rockdaisy | Asteraceae
|
| PESTS2 | Perityle staurophylla (Barneby) Shinners var. staurophylla | New Mexico rockdaisy | Asteraceae
|
| PEST8 | Perityle staurophylla (Barneby) Shinners | New Mexico rockdaisy | Asteraceae
|
| PETE11 | Perityle tenella (M.E. Jones) J.F. Macbr. | Springdale rockdaisy | Asteraceae
|
| PEVA | Perityle vaseyi Coult. | Vasey's rockdaisy | Asteraceae
|
| PEVI9 | Perityle villosa (Blake) Shinners | Hanaupah rockdaisy | Asteraceae
|
| PEVI10 | Perityle vitreomontana Warnock | Glass Mountain rockdaisy | Asteraceae
|
| PEWA10 | Perityle warnockii A. Powell | Warnock's rockdaisy | Asteraceae
|
| PERIT | Perityle Benth. | rockdaisy | Asteraceae
|
| PERH3 | Perizoma rhomboidea (Gillies & Hook.) Small | Salpichroa origanifolia | Solanaceae
|
| PEAT10 | Perovskia atriplicifolia Benth. | Russian sage | Lamiaceae
|
| PEROV | Perovskia Kar. | perovskia | Lamiaceae
|
| PESAT | Perrottetia sandwicensis Gray var. tomentosa O. Deg. & Greenw. | Perrottetia sandwicensis | Celastraceae
|
| PESA3 | Perrottetia sandwicensis Gray | olomea | Celastraceae
|
| PERRO | Perrottetia Kunth | perrottetia | Celastraceae
|
| PEAMA2 | Persea americana Miller var. americana | avocado | Lauraceae
|
| PEAMD | Persea americana Miller var. drymifolia (Schldl. & Cham.) S. F. Blake | Mexican avocado | Lauraceae
|
| PEAM3 | Persea americana P. Mill. | avocado | Lauraceae
|
| PEBOH | Persea borbonia (L.) Spreng. var. humilis (Nash) Kopp | Persea humilis | Lauraceae
|
| PEBOP | Persea borbonia (L.) Spreng. var. pubescens (Pursh) Little | Persea palustris | Lauraceae
|
| PEBO | Persea borbonia (L.) Spreng. | redbay | Lauraceae
|
| PEGR22 | Persea gratissima Gaertner f. | Persea americana var. americana | Lauraceae
|
| PEHU2 | Persea humilis Nash | silk bay | Lauraceae
|
| PEKR | Persea krugii Mez | canela | Lauraceae
|
| PELI13 | Persea littoralis Small | Persea borbonia | Lauraceae
|
| PENUG | Persea nubigena L. O. Williams var. guatemalensis L. O. Williams | Guatemalan avocado | Lauraceae
|
| PENU2 | Persea nubigena L. O. Williams | Guatemalan avocado | Lauraceae
|
| PEPA37 | Persea palustris (Raf.) Sarg. | swamp bay | Lauraceae
|
| PEPE23 | Persea persea (L.) Cockerell | Persea americana | Lauraceae
|
| PEPO7 | Persea portoricensis Britt. & Wilson | Persea urbaniana | Lauraceae
|
| PEPU19 | Persea pubescens (Pursh) Sarg. | Persea palustris | Lauraceae
|
| PESC11 | Persea schiedeana Nees | coyo | Lauraceae
|
| PEUR2 | Persea urbaniana Mez | aquacatillo | Lauraceae
|
| PERSE | Persea P. Mill. | bay | Lauraceae
|
| PEVU2 | Persica vulgaris P. Mill. | Prunus persica | Rosaceae
|
| PEAC5 | Persicaria acuminata (Kunth) G. Maza | Polygonum acuminatum | Polygonaceae
|
| PEAME | Persicaria amphibia (L.) S.F. Gray var. emersa (Michx.) Hickman | Polygonum amphibium var. emersum | Polygonaceae
|
| PEAMS | Persicaria amphibia (L.) S.F. Gray var. stipulacea (Coleman) Hara | Polygonum amphibium var. stipulaceum | Polygonaceae
|
| PEAM8 | Persicaria amphibia (L.) S.F. Gray p.p. | Polygonum amphibium var. emersum | Polygonaceae
|
| PEBI4 | Persicaria bicornis (Raf.) Nieuwl. | Polygonum pensylvanicum | Polygonaceae
|
| PEBI5 | Persicaria bistortoides (Pursh) H. Hinds | Polygonum bistortoides | Polygonaceae
|
| PEBU3 | Persicaria bungeana (Turcz.) Nakai ex T. Mori | Polygonum bungeanum | Polygonaceae
|
| PECA29 | Persicaria capitata (Buch.-Ham. ex D. Don) Gross. | Polygonum capitatum | Polygonaceae
|
| PECA30 | Persicaria careyi (Olney) Greene | Polygonum careyi | Polygonaceae
|
| PECO23 | Persicaria coccinea (Muhl. ex Willd.) Greene | Polygonum amphibium var. emersum | Polygonaceae
|
| PEDE15 | Persicaria densiflora (Meisn.) Moldenke | Polygonum densiflorum | Polygonaceae
|
| PEHI6 | Persicaria hirsuta (Walt.) Small | Polygonum hirsutum | Polygonaceae
|
| PEHY6 | Persicaria hydropiper (L.) Opiz | Polygonum hydropiper | Polygonaceae
|
| PEHYB | Persicaria hydropiperoides (Michx.) Small var. breviciliata (Fern.) C.F. Reed | Polygonum hydropiperoides | Polygonaceae
|
| PEHYE | Persicaria hydropiperoides (Michx.) Small var. euronotora (Fern.) C.F. Reed | Polygonum hydropiperoides | Polygonaceae
|
| PEHYO | Persicaria hydropiperoides (Michx.) Small var. opelousana (Riddell ex Small) J.S. Wilson | Polygonum hydropiperoides | Polygonaceae
|
| PEHY7 | Persicaria hydropiperoides (Michx.) Small | Polygonum hydropiperoides | Polygonaceae
|
| PEIN11 | Persicaria incarnata (Ell.) Small | Polygonum lapathifolium | Polygonaceae
|
| PELA22 | Persicaria lapathifolia (L.) S.F. Gray | Polygonum lapathifolium | Polygonaceae
|
| PELO10 | Persicaria longiseta (de Bruyn) Moldenke | Polygonum caespitosum var. longisetum | Polygonaceae
|
| PELO7 | Persicaria longistyla (Small) Small | Polygonum pensylvanicum | Polygonaceae
|
| PEMA17 | Persicaria maculata (Raf.) S.F. Gray | Polygonum persicaria | Polygonaceae
|
| PEME10 | Persicaria mesochora Greene | Polygonum amphibium var. stipulaceum | Polygonaceae
|
| PEMI9 | Persicaria mississippiensis (Stanford) Small | Polygonum pensylvanicum | Polygonaceae
|
| PEMU11 | Persicaria muehlenbergii (S. Wats.) Small | Polygonum amphibium var. emersum | Polygonaceae
|
| PENE10 | Persicaria nebraskensis Greene | Polygonum amphibium var. stipulaceum | Polygonaceae
|
| PEOP3 | Persicaria opelousana (Riddell ex Small) Small | Polygonum hydropiperoides | Polygonaceae
|
| PEOR9 | Persicaria orientalis (L.) Spach | Polygonum orientale | Polygonaceae
|
| PEPA42 | Persicaria paludicola Small | Polygonum hydropiperoides | Polygonaceae
|
| PEPED | Persicaria pensylvanica (L.) G. Maza var. dura (Stanford) C.F. Reed | Polygonum pensylvanicum | Polygonaceae
|
| PEPE19 | Persicaria pensylvanica (L.) G. Maza | Polygonum pensylvanicum | Polygonaceae
|
| PEPE18 | Persicaria persicaria (L.) Small | Polygonum persicaria | Polygonaceae
|
| PEPE28 | Persicaria persicarioides (Kunth) Small | Polygonum hydropiperoides | Polygonaceae
|