| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| PASC12 | Panicum scheelei Steud. | Setaria scheelei | Poaceae
|
| PASC2 | Panicum schiffneri Hack. | Schiffner's panicgrass | Poaceae
|
| PASC18 | Panicum scoparioides Ashe | Dichanthelium scoparioides | Poaceae
|
| PASCL | Panicum scoparium Lam. var. leibergii Vasey | Dichanthelium leibergii | Poaceae
|
| PASC9 | Panicum scoparium Lam. | Dichanthelium scoparium | Poaceae
|
| PASC10 | Panicum scoparium S. Wats. ex Nash, non Lam. | Dichanthelium oligosanthes var. scribnerianum | Poaceae
|
| PASCL2 | Panicum scribnerianum Nash var. leibergii (Vasey) Scribn. | Dichanthelium leibergii | Poaceae
|
| PASC5 | Panicum scribnerianum Nash | Dichanthelium oligosanthes var. scribnerianum | Poaceae
|
| PASE13 | Panicum setarium Lam. | Oplismenus hirtellus | Poaceae
|
| PASE10 | Panicum setosum Sw. | Setaria setosa var. setosa | Poaceae
|
| PASH | Panicum shastense Scribn. & Merr. | Dichanthelium scoparioides | Poaceae
|
| PASL | Panicum sloanei Griseb. | Lasiacis sloanei | Poaceae
|
| PASO | Panicum sonorum Beal | sauwi | Poaceae
|
| PASO3 | Panicum sorghoideum Desv. ex Hamilton | Lasiacis sorghoidea var. sorghoidea | Poaceae
|
| PASPI | Panicum sphaerocarpon Ell. var. inflatum (Scribn. & J.G. Sm.) A.S. Hitchc. & Chase | Dichanthelium sphaerocarpon var. sphaerocarpon | Poaceae
|
| PASPI3 | Panicum sphaerocarpon Ell. var. isophyllum (Scribn.) Angelo | Dichanthelium sphaerocarpon var. isophyllum | Poaceae
|
| PASPI4 | Panicum sphaerocarpon Ell. var. isophyllum (Scribn.) C. F. Reed | Dichanthelium sphaerocarpon var. isophyllum | Poaceae
|
| PASPI2 | Panicum sphaerocarpon Ell. var. isophyllum (Scribn.) J. Wipff & S.D. Jones | Dichanthelium sphaerocarpon var. isophyllum | Poaceae
|
| PASPP | Panicum sphaerocarpon Ell. var. polyanthes (J.A. Schultes) A.S. Sherif | Dichanthelium sphaerocarpon var. isophyllum | Poaceae
|
| PASP8 | Panicum sphaerocarpon Ell. | Dichanthelium sphaerocarpon var. sphaerocarpon | Poaceae
|
| PASP7 | Panicum sphagnicola Nash | Dichanthelium dichotomum var. dichotomum | Poaceae
|
| PASP9 | Panicum spretum J.A. Schultes | Dichanthelium spretum | Poaceae
|
| PAST | Panicum stenodes Griseb. | savannah panicgrass | Poaceae
|
| PAST2 | Panicum stevensianum A.S. Hitchc. & Chase | Stevens' panicgrass | Poaceae
|
| PAST12 | Panicum stipitatum Nash | Panicum rigidulum var. elongatum | Poaceae
|
| PAST4 | Panicum stramineum A.S. Hitchc. & Chase | Panicum hirticaule var. stramineum | Poaceae
|
| PASTL | Panicum strictum Pursh var. linearifolium (Scribn. ex Nash) Farw. | Dichanthelium linearifolium | Poaceae
|
| PASTP3 | Panicum strictum Pursh var. perlongum (Nash) Farw. | Dichanthelium linearifolium | Poaceae
|
| PASTP | Panicum strictum Pursh var. psilophyllum (Fern.) Farw. | Dichanthelium depauperatum | Poaceae
|
| PAST8 | Panicum strictum Bosc ex Roemer & J.A. Schultes | Dichanthelium wrightianum | Poaceae
|
| PASTG | Panicum strigosum Muhl. ex Ell. var. glabrescens (Griseb.) Lelong | Dichanthelium strigosum var. glabrescens | Poaceae
|
| PASTL2 | Panicum strigosum Muhl. ex Ell. var. leucoblepharis (Trin.) Lelong | Dichanthelium strigosum var. leucoblepharis | Poaceae
|
| PASTP2 | Panicum strigosum Muhl. ex Ell. var. puberula C.F. Reed | Dichanthelium strigosum var. leucoblepharis | Poaceae
|
| PAST13 | Panicum strigosum Muhl. ex Ell. | Dichanthelium strigosum var. strigosum | Poaceae
|
| PASU6 | Panicum subvillosum Ashe | Dichanthelium acuminatum var. fasciculatum | Poaceae
|
| PASU34 | Panicum sumatrense Roth ex Roemer & Schultes | little millet | Poaceae
|
| PATE3 | Panicum tenerum Bey. ex Trin. | bluejoint panicgrass | Poaceae
|
| PATE15 | Panicum tennesseense Ashe | Dichanthelium acuminatum var. fasciculatum | Poaceae
|
| PATE17 | Panicum tenue Muhl. | Dichanthelium dichotomum var. tenue | Poaceae
|
| PATE6 | Panicum tenuifolium Hook. & Arn. | parkland panicgrass | Poaceae
|
| PATE14 | Panicum texanum Buckl. | Urochloa texana | Poaceae
|
| PATH | Panicum thermale Boland. | Dichanthelium acuminatum var. thermale | Poaceae
|
| PATH4 | Panicum thurowii Scribn. & J.G. Sm. | Dichanthelium acuminatum var. thurowii | Poaceae
|
| PATO | Panicum torridum Gaud. | torrid panicgrass | Poaceae
|
| PATR3 | Panicum trichanthum Nees | thicket panicgrass | Poaceae
|
| PATR4 | Panicum trichoides Sw. | tropical panicgrass | Poaceae
|
| PATR8 | Panicum trifolium Nash | Dichanthelium dichotomum var. tenue | Poaceae
|
| PATS2 | Panicum tsugetorum Nash | Dichanthelium sabulorum var. patulum | Poaceae
|
| PATU | Panicum tuckermanii Fern. | Panicum philadelphicum | Poaceae
|
| PAUNT | Panicum unciphyllum Trin. var. thinium A.S. Hitchc. & Chase | Dichanthelium sabulorum var. thinium | Poaceae
|
| PAUN2 | Panicum unispicatum Scribn. & Merr. | Paspalum unispicatum | Poaceae
|
| PAUR | Panicum urvilleanum Kunth | desert panicgrass | Poaceae
|
| PAUT3 | Panicum utowanaeum Scribn. ex Millsp. | Setaria utowanaea | Poaceae
|
| PAVE3 | Panicum venezuelae Hack. | Venezuelan panicgrass | Poaceae
|
| PAVE4 | Panicum vernale A.S. Hitchc. & Chase | Dichanthelium dichotomum var. ensifolium | Poaceae
|
| PAVE2 | Panicum verrucosum Muhl. | warty panicgrass | Poaceae
|
| PAVEA | Panicum verticillatum L. var. ambiguum Guss. | Setaria verticilliformis | Poaceae
|
| PAVE5 | Panicum verticillatum L. | Setaria verticillata | Poaceae
|
| PAVIP2 | Panicum villosissimum Nash var. pseudopubescens (Nash) Fern. | Dichanthelium villosissimum var. villosissimum | Poaceae
|
| PAVIS2 | Panicum villosissimum Nash var. scoparioides (Ashe) Fern. | Dichanthelium scoparioides | Poaceae
|
| PAVI8 | Panicum villosissimum Nash | Dichanthelium villosissimum var. villosissimum | Poaceae
|
| PAVIC | Panicum virgatum L. var. cubense Griseb. | Panicum virgatum var. virgatum | Poaceae
|
| PAVIO | Panicum virgatum L. var. obtusum Wood | Panicum virgatum var. virgatum | Poaceae
|
| PAVIS | Panicum virgatum L. var. spissum Linder | switchgrass | Poaceae
|
| PAVIV | Panicum virgatum L. var. virgatum | switchgrass | Poaceae
|
| PAVI2 | Panicum virgatum L. | switchgrass | Poaceae
|
| PAVIM | Panicum viride L. var. major Gaudin | Setaria viridis var. major | Poaceae
|
| PAVI9 | Panicum viride L. | Setaria viridis var. viridis | Poaceae
|
| PAVU | Panicum vulpisetum Lam. | Setaria vulpiseta | Poaceae
|
| PAWA3 | Panicum walteri Pursh | Echinochloa walteri | Poaceae
|
| PAWE3 | Panicum webberianum Nash | Dichanthelium sabulorum var. patulum | Poaceae
|
| PAWE5 | Panicum werneri Scribn. | Dichanthelium linearifolium | Poaceae
|
| PAWIB | Panicum wilcoxianum Vasey var. breitungii Boivin | Dichanthelium wilcoxianum | Poaceae
|
| PAWI5 | Panicum wilcoxianum Vasey | Dichanthelium wilcoxianum | Poaceae
|
| PAWI4 | Panicum wilmingtonense Ashe | Dichanthelium ovale var. addisonii | Poaceae
|
| PAWR7 | Panicum wrightianum Scribn. | Dichanthelium wrightianum | Poaceae
|
| PAXA3 | Panicum xalapense Kunth | Dichanthelium laxiflorum | Poaceae
|
| PAXA4 | Panicum xanthophysum Gray | Dichanthelium xanthophysum | Poaceae
|
| PAXE | Panicum xerophilum (Hbd.) A.S. Hitchc. | kakonakona | Poaceae
|
| PAYA2 | Panicum yadkinense Ashe | Dichanthelium dichotomum var. dichotomum | Poaceae
|
| PANIC | Panicum L. | panicgrass | Poaceae
|
| PAAH2 | Pannaria ahlneri P. M. Jorg. | Fuscopannaria ahlneri | Pannariaceae
|
| PACH15 | Pannaria cheiroloba (Mull. Arg.) | matted lichen | Pannariaceae
|
| PACO33 | Pannaria conoplea (Ach.) Bory | matted lichen | Pannariaceae
|
| PAGR5 | Pannaria granatina (Sommerf.) Th. Fr. | Euopsis granatina | Lichinaceae
|
| PAHA8 | Pannaria halei Tuck. | Phyllopsora halei | Bacidiaceae
|
| PAHO2 | Pannaria hookeri (Borrer ex Sm.) Nyl. | Hooker's matted lichen | Pannariaceae
|
| PAHY8 | Pannaria hypnorum (Vahl) Korber | Psoroma hypnorum | Pannariaceae
|
| PAIS3 | Pannaria isidiata Degel. | Vestergrenopsis isidiata | Placynthiaceae
|
| PALA37 | Pannaria laceratula Hue | Fuscopannaria laceratula | Pannariaceae
|
| PALE16 | Pannaria lepidiota (Sommerf.) Th. Fr. | Fuscopannaria praetermissa | Pannariaceae
|
| PALE13 | Pannaria leucophaea (Vahl) P. M. Jorg. | Fuscopannaria leucophaea | Pannariaceae
|
| PALE14 | Pannaria leucosticta (Tuck.) Tuck. ex Nyl. | Fuscopannaria leucosticta | Pannariaceae
|
| PALE15 | Pannaria leucostictoides Ohlsson | Fuscopannaria leucostictoides | Pannariaceae
|
| PALU6 | Pannaria lurida (Mont.) Nyl. | matted lichen | Pannariaceae
|
| PAMA18 | Pannaria mariana (Fr.) Mull. Arg. | matted lichen | Pannariaceae
|
| PAMA19 | Pannaria maritima P. M. Jorg. | Fuscopannaria maritima | Pannariaceae
|
| PAME8 | Pannaria mediterranea Tav. | Fuscopannaria mediterranea | Pannariaceae
|
| PAME10 | Pannaria melamphylla Tuck. | Lichinella melamphylla | Lichinaceae
|
| PAMI15 | Pannaria microphylla (Sw.) A. Massal. | Fuscopannaria leucophaea | Pannariaceae
|
| PAPE60 | Pannaria pezizoides (Weber) Trevisan | matted lichen | Pannariaceae
|