| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| PSHE4 | Pseudognaphalium helleri (Britt.) A. Anderb. | Heller's cudweed | Asteraceae
|
| PSLE4 | Pseudognaphalium leucocephalum (Gray) A. Anderb. | white cudweed | Asteraceae
|
| PSLU6 | Pseudognaphalium luteoalbum (L.) Hilliard & Burtt | Jersey cudweed | Asteraceae
|
| PSMA11 | Pseudognaphalium macounii (Greene) Kartesz, comb. nov. ined. | Macoun's cudweed | Asteraceae
|
| PSMI4 | Pseudognaphalium microcephalum (Nutt.) A. Anderb. | Pseudognaphalium canescens ssp. microcephalum | Asteraceae
|
| PSOBO | Pseudognaphalium obtusifolium (L.) Hilliard & Burtt ssp. obtusifolium | rabbittobacco | Asteraceae
|
| PSOBP | Pseudognaphalium obtusifolium (L.) Hilliard & Burtt ssp. praecox (Fern.) Kartesz, comb. nov. ined. | rabbittobacco | Asteraceae
|
| PSOBS | Pseudognaphalium obtusifolium (L.) Hilliard & Burtt ssp. saxicola (Fassett) Kartesz, comb. nov. ined. | rabbittobacco | Asteraceae
|
| PSOB3 | Pseudognaphalium obtusifolium (L.) Hilliard & Burtt | rabbittobacco | Asteraceae
|
| PSPR2 | Pseudognaphalium pringlei (Gray) A. Anderb. | Pringle's cudweed | Asteraceae
|
| PSRA5 | Pseudognaphalium ramosissimum (Nutt.) A. Anderb. | pink cudweed | Asteraceae
|
| PSRO | Pseudognaphalium roseum (Kunth) A. Anderb. | rosy cudweed | Asteraceae
|
| PSSAH | Pseudognaphalium sandwicensium (Gaud.) A. Anderb. ssp. hawaiiense (O. Deg. & Sherff) Kartesz, comb. nov. ined. | 'ena'ena | Asteraceae
|
| PSSAK | Pseudognaphalium sandwicensium (Gaud.) A. Anderb. ssp. kilaueanum (O. Deg. & Sherff) Kartesz, comb. nov. ined. | 'ena'ena | Asteraceae
|
| PSSAM | Pseudognaphalium sandwicensium (Gaud.) A. Anderb. ssp. molokaiense (O. Deg. & Sherff) Kartesz, comb. nov. ined. | 'ena'ena | Asteraceae
|
| PSSAS2 | Pseudognaphalium sandwicensium (Gaud.) A. Anderb. ssp. sandwicensium | 'ena'ena | Asteraceae
|
| PSSA8 | Pseudognaphalium sandwicensium (Gaud.) A. Anderb. | 'ena'ena | Asteraceae
|
| PSST7 | Pseudognaphalium stramineum (Kunth) W.A. Weber | cottonbatting plant | Asteraceae
|
| PSVI4 | Pseudognaphalium viscosum (Kunth) W.A. Weber | winged cudweed | Asteraceae
|
| PSVI5 | Pseudognaphalium viscosum auct. non (Kunth) W.A. Weber | Pseudognaphalium macounii | Asteraceae
|
| PSEUD43 | Pseudognaphalium Kirp. | cudweed | Asteraceae
|
| PSCH | Pseudogynoxys chenopodioides Kunth | Mexican flamevine | Asteraceae
|
| PSEUD15 | Pseudogynoxys (Greenm.) Cabrera | pseudogynoxys | Asteraceae
|
| PSKA2 | Pseudolarix kaempferi (Lamb.) Gordon | Japanese larch | Pinaceae
|
| PSEUD47 | Pseudolarix Gordon, nom. cons. | golden larch | Pinaceae
|
| PSFR5 | Pseudolepicolea fryei (Perss.) Grolle & Ando | | Pseudolepicoleaceae
|
| PSEUD25 | Pseudolepicolea Fulford & J. Taylor | | Pseudolepicoleaceae
|
| PSAR8 | Pseudoleskea arizonae Williams | Lescuraea arizonae | Leskeaceae
|
| PSAT2 | Pseudoleskea atricha (Kindb. in Mac. & Kindb.) Kindb. | pseudoleskea moss | Leskeaceae
|
| PSAT3 | Pseudoleskea atrovirens (Brid.) Schimp. in B.S.G. | Pseudoleskea incurvata var. incurvata | Leskeaceae
|
| PSAT4 | Pseudoleskea atrovirens sensu Sharp in Grout | Pseudoleskea patens | Leskeaceae
|
| PSBA6 | Pseudoleskea baileyi Best & Grout in Grout | Bailey's pseudoleskea moss | Leskeaceae
|
| PSBR7 | Pseudoleskea brachyclados (Schwaegr.) Kindb. | Pseudoleskea radicosa var. radicosa | Leskeaceae
|
| PSBR8 | Pseudoleskea breidleri Kindb. | Pseudoleskea radicosa var. denudata | Leskeaceae
|
| PSCAA | Pseudoleskea catenulata (Brid. ex Schrad.) Schrimp.in B.S.G. var. acuminata (Culm.) Podp. | Pseudoleskeella sibirica | Leskeaceae
|
| PSDEH | Pseudoleskea denudata (Kindb. in Mac. & Kindb.) Kindb. in Best var. holzingeri Best | Pseudoleskea radicosa var. radicosa | Leskeaceae
|
| PSDE4 | Pseudoleskea denudata (Kindb. in Mac. & Kindb.) Kindb. in Best | Pseudoleskea radicosa var. denudata | Leskeaceae
|
| PSFA3 | Pseudoleskea falcicuspis C. M�ll. & Kindb. in Mac. & Kindb. | Pseudoleskea incurvata var. incurvata | Leskeaceae
|
| PSFR4 | Pseudoleskea frigida (Kindb.) Sharp in Grout | Lescuraea saxicola | Leskeaceae
|
| PSHO5 | Pseudoleskea howei (Best) L. Koch | Pseudoleskea radicosa var. radicosa | Leskeaceae
|
| PSIL | Pseudoleskea iliamniana (Lawt.) Crum et al. | Pseudoleskea julacea | Leskeaceae
|
| PSING | Pseudoleskea incurvata (Hedw.) Loeske var. gigantea (Lawt.) Crum et al. | giant pseudoleskea moss | Leskeaceae
|
| PSINI | Pseudoleskea incurvata (Hedw.) Loeske var. incurvata | pseudoleskea moss | Leskeaceae
|
| PSINT | Pseudoleskea incurvata (Hedw.) Loeske var. tenuiretis (Culm.) Crum et al. | pseudoleskea moss | Leskeaceae
|
| PSIN6 | Pseudoleskea incurvata (Hedw.) Loeske | pseudoleskea moss | Leskeaceae
|
| PSJU4 | Pseudoleskea julacea (Besch. & Card. in Card.) Crum et al. | pseudoleskea moss | Leskeaceae
|
| PSOL | Pseudoleskea oligoclada Kindb. | Pseudoleskea incurvata var. incurvata | Leskeaceae
|
| PSPAF | Pseudoleskea pallida Best var. filescens Best | Pseudoleskeella sibirica | Leskeaceae
|
| PSPA7 | Pseudoleskea pallida Best | Pseudoleskea radicosa var. pallida | Leskeaceae
|
| PSPA6 | Pseudoleskea patens (Lindb.) Kindb. | pseudoleskea moss | Leskeaceae
|
| PSRAC | Pseudoleskea radicosa (Mitt.) Mac. & Kindb. var. compacta Best | compact pseudoleskea moss | Leskeaceae
|
| PSRAD | Pseudoleskea radicosa (Mitt.) Mac. & Kindb. var. denudata (Kindb. in Mac. & Kindb.) Wijk & Marg. | denuded pseudoleskea moss | Leskeaceae
|
| PSRAH | Pseudoleskea radicosa (Mitt.) Mac. & Kindb. var. holzingeri (Best) Hag. | Pseudoleskea radicosa var. radicosa | Leskeaceae
|
| PSRAP | Pseudoleskea radicosa (Mitt.) Mac. & Kindb. var. pallida (Best) Crum et al. | pale pseudoleskea moss | Leskeaceae
|
| PSRAR | Pseudoleskea radicosa (Mitt.) Mac. & Kindb. var. radicosa | pseudoleskea moss | Leskeaceae
|
| PSRA4 | Pseudoleskea radicosa (Mitt.) Mac. & Kindb. | pseudoleskea moss | Leskeaceae
|
| PSRI2 | Pseudoleskea rigescens Lindb. | Pseudoleskea stenophylla | Leskeaceae
|
| PSSA6 | Pseudoleskea saviana (De Not.) Latz. | pseudoleskea moss | Leskeaceae
|
| PSSA7 | Pseudoleskea saxicola (Schimp. in B.S.G.) Crum et al. | Lescuraea saxicola | Leskeaceae
|
| PSSCD | Pseudoleskea sciuroides Kindb. var. denudata Kindb. in Mac. & Kindb. | Pseudoleskea radicosa var. denudata | Leskeaceae
|
| PSSC13 | Pseudoleskea sciuroides Kindb. | Pseudoleskea radicosa var. radicosa | Leskeaceae
|
| PSST5 | Pseudoleskea stenophylla Ren. & Card. in R�ll | pseudoleskea moss | Leskeaceae
|
| PSSU5 | Pseudoleskea substriata Best | Lescuraea saxicola | Leskeaceae
|
| PSEUD40 | Pseudoleskea Schimp. in B.S.G. | pseudoleskea moss | Leskeaceae
|
| PSAR9 | Pseudoleskeella arizonae (Williams) Lawt. | Lescuraea arizonae | Leskeaceae
|
| PSCAA2 | Pseudoleskeella catenulata (Brid. ex Schrad.) Kindb. var. acuminata (Culm.) Amann | Pseudoleskeella sibirica | Leskeaceae
|
| PSCAF | Pseudoleskeella catenulata (Brid. ex Schrad.) Kindb. var. filescens (Best) Lawt. | Pseudoleskeella sibirica | Leskeaceae
|
| PSNE2 | Pseudoleskeella nervosa (Brid.) Nyh. | Leskeella nervosa | Leskeaceae
|
| PSSE2 | Pseudoleskeella serpentinensis P. Wils. & Norris | serpentine pseudoleskeella moss | Leskeaceae
|
| PSSI3 | Pseudoleskeella sibirica (Arnell) P. Wils. & Norris | Siberian pseudoleskeella moss | Leskeaceae
|
| PSTEC | Pseudoleskeella tectorum (Funck ex Brid.) Kindb. in Broth. var. cyrtophylla (Kindb. in Mac. & Kindb.) Crum et al. | Pseudoleskeella tectorum | Leskeaceae
|
| PSTEF3 | Pseudoleskeella tectorum (Funck ex Brid.) Kindb. in Broth. var. flagellifera (Best) Amann | Pseudoleskeella tectorum | Leskeaceae
|
| PSTE11 | Pseudoleskeella tectorum (Funck ex Brid.) Kindb. in Broth. | pseudoleskeella moss | Leskeaceae
|
| PSWIF | Pseudoleskeella williamsii (Best) Crum et al. var. filamentosa (Best) Crum et al. | Pseudoleskeella tectorum | Leskeaceae
|
| PSWI | Pseudoleskeella williamsii (Best) Crum et al. | Pseudoleskeella tectorum | Leskeaceae
|
| PSEUD31 | Pseudoleskeella Kindb. | pseudoleskeella moss | Leskeaceae
|
| PSSP2 | Pseudolmedia spuria (Sw.) Griseb. | false breadnut | Moraceae
|
| PSEUD19 | Pseudolmedia Tr�cul | pseudolmedia | Moraceae
|
| PSCA14 | Pseudolycopodiella caroliniana (L.) Holub | Lycopodiella caroliniana var. caroliniana | Lycopodiaceae
|
| PSBRS | Pseudomorus brunoniana (Endl.) Bureau var. sandwicensis (O. Deg.) Skottsberg | Streblus pendulinus | Moraceae
|
| PSBR4 | Pseudomorus brunoniana (Endl.) Bureau | Streblus pendulinus | Moraceae
|
| PSSA4 | Pseudomorus sandwicensis O. Deg. | Streblus pendulinus | Moraceae
|
| PSLA6 | Pseudopanax laetus (Kirk) Philipson | shrub panax | Araliaceae
|
| PSEUD48 | Pseudopanax K. Koch | pseudopanax | Araliaceae
|
| PSAL2 | Pseudoparmelia alabamensis (Hale & McCull.) Hale | Paraparmelia alabamensis | Parmeliaceae
|
| PSAM3 | Pseudoparmelia amazonica (Nyl.) Hale | Canoparmelia amazonica | Parmeliaceae
|
| PSBA5 | Pseudoparmelia baltimorensis (Gyelnik & Foriss) Hale | Flavoparmelia baltimorensis | Parmeliaceae
|
| PSCA7 | Pseudoparmelia caperata (L.) Hale | Flavoparmelia caperata | Parmeliaceae
|
| PSCA8 | Pseudoparmelia caroliniana (Nyl.) Hale | Canoparmelia caroliniana | Parmeliaceae
|
| PSCR3 | Pseudoparmelia crozalsiana (de Lesd.) Hale | Canoparmelia crozalsiana | Parmeliaceae
|
| PSCR4 | Pseudoparmelia cryptochlorophaea (Hale) Hale | Canoparmelia cryptochlorophaea | Parmeliaceae
|
| PSMA10 | Pseudoparmelia martinicana (Nyl.) Hale | Canoparmelia martinicana | Parmeliaceae
|
| PSRU5 | Pseudoparmelia rutidota (Hook. f. & Taylor) Hale | Flavoparmelia rutidota | Parmeliaceae
|
| PSSA5 | Pseudoparmelia salacinifera (Hale) Hale | Canoparmelia salacinifera | Parmeliaceae
|
| PSSP5 | Pseudoparmelia sphaerospora (Nyl.) Hale | | Parmeliaceae
|
| PSTE8 | Pseudoparmelia texana (Tuck.) Hale | Canoparmelia texana | Parmeliaceae
|
| PSEUD36 | Pseudoparmelia Lynge | pseudoparmelia | Parmeliaceae
|
| PSKE | Pseudophegopteris keraudreniana (Gaud.) Holttum | false beech fern | Thelypteridaceae
|
| PSEUD8 | Pseudophegopteris Ching | pseudophegopteris | Thelypteridaceae
|
| PSSA3 | Pseudophoenix saonae O.F. Cook | Pseudophoenix sargentii ssp. saonae | Arecaceae
|
| PSSAS | Pseudophoenix sargentii H. Wendl. ex Sarg. ssp. saonae (O.F. Cook) R.W. Read | Florida cherry palm | Arecaceae
|