| Phlox abdita A. Nelson | Synonym |  | TRO |  | 
	
		| Phlox acerba A.Nelson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox aciculifolia P.B.Kenn. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox aculeata A. Nelson | Accepted |  | TRO |  | 
	
		| Phlox acuminata Pursh | Accepted |  | TRO |  | 
	
		| Phlox acutifolia Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox adsurgens Torr. ex A. Gray | Accepted |  | TRO |  | 
	
		| Phlox alaskana Jordal | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox alaskensis Jordal | Accepted |  | TRO |  | 
	
		| Phlox alba Moench | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox albomarginata M.E. Jones | Accepted |  | TRO |  | 
	
		| Phlox altissima Moench | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox alyssifolia Greene | Accepted |  | TRO |  | 
	
		| Phlox alyssifolia subsp. abdita (A. Nelson) Wherry | Accepted |  | TRO |  | 
	
		| Phlox alyssifolia subsp. collina (Rydb.) Wherry | Accepted |  | TRO |  | 
	
		| Phlox amabilis Brand | Accepted |  | TRO |  | 
	
		| Phlox americana Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox amoena Sims | Accepted |  | TRO |  | 
	
		| Phlox amplexicaulis Raf. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox amplifolia Britton | Accepted |  | TRO |  | 
	
		| Phlox andicola (Britton) E.E. Nelson | Accepted |  | TRO |  | 
	
		| Phlox andicola subsp. planitiarum (A. Nelson) Wherry | Accepted |  | TRO |  | 
	
		| Phlox argillacea Clute & Ferris | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox aristata Michx. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox aristata Lodd. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox aristata var. virens Michx. | Synonym |  | TRO |  | 
	
		| Phlox aspera E.E.Nelson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × atrocaulis W.H.Baxter | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox auriculata Sessé & Moc. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox austromontana Coville | Accepted |  | TRO |  | 
	
		| Phlox austromontana subsp. densa (Brand) Wherry | Accepted |  | TRO |  | 
	
		| Phlox austromontana var. lutescens S.L. Welsh | Synonym |  | TRO |  | 
	
		| Phlox austromontana subsp. prostrata (E.E. Nelson) Wherry | Accepted |  | TRO |  | 
	
		| Phlox austromontana var. prostrata E.E. Nelson | Synonym |  | TRO |  | 
	
		| Phlox azurea Glad. L. Sm. | Accepted |  | TRO |  | 
	
		| Phlox bernardina Munz & I.M.Johnst. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox bifida L.C. Beck | Accepted |  | TRO |  | 
	
		| Phlox bifida var. bifida | Synonym |  | TRO |  | 
	
		| Phlox bifida var. cedaria (Brand) Fernald | Accepted |  | TRO |  | 
	
		| Phlox bifida var. stellaria (A. Gray) Wherry | Synonym |  | TRO |  | 
	
		| Phlox bifida subsp. stellaria (A. Gray) Wherry | Accepted |  | TRO |  | 
	
		| Phlox biflora Ruiz & Pav. | Synonym |  | WCSP (in review) |  | 
	
		| Phlox bimaculata Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox borealis Wherry | Synonym |  | TRO |  | 
	
		| Phlox brevifolia Baum. ex Hoffmanns. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox brevistylis A.Nelson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × bridgesii Marnock | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox brittonii Small | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × broughtonii Marnock | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × brownii Salm-Dyck | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox bryoides Nutt. | Accepted |  | TRO |  | 
	
		| Phlox buckleyi Wherry | Accepted |  | TRO |  | 
	
		| Phlox caesia Eastw. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox caespitosa Nutt. | Accepted |  | TRO |  | 
	
		| Phlox caespitosa subsp. condensata (A. Gray) Wherry | Accepted |  | TRO |  | 
	
		| Phlox caespitosa var. condensata A. Gray | Synonym |  | TRO |  | 
	
		| Phlox caldriana Court. ex Steud. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox canadensis Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox candida Pers. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox canescens Torr. & A. Gray | Accepted |  | TRO |  | 
	
		| Phlox carnea Sims | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox carolina L. | Accepted |  | TRO |  | 
	
		| Phlox carolina subsp. triflora (Michx.) Wherry | Synonym |  | TRO |  | 
	
		| Phlox caroliniana Hill | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox caryophylla Wherry | Accepted |  | TRO |  | 
	
		| Phlox cernua E.E.Nelson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox ciliata H.R.Wehrh. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox clarkioides Poit. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox cluteana A. Nelson | Accepted |  | TRO |  | 
	
		| Phlox clutena A.Nelson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × coldryana Paxton | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox collina Rydb. | Synonym |  | TRO |  | 
	
		| Phlox colubrina Wherry & Constance | Accepted |  | TRO |  | 
	
		| Phlox condensata (A. Gray) E.E. Nelson | Accepted |  | TRO |  | 
	
		| Phlox condensata var. hendersonii E.E. Nelson | Synonym |  | TRO |  | 
	
		| Phlox cordata Elliott | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox cortezana A. Nelson | Synonym |  | TRO |  | 
	
		| Phlox corymbosa Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox costata Rydb. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox covillei E.E. Nelson | Accepted |  | TRO |  | 
	
		| Phlox crassifolia Lodd. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox cruenta Curtis ex Steud. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × cultorum Thorsrud & Reisaeter | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox cuspidata Scheele | Accepted |  | TRO |  | 
	
		| Phlox cuspidata var. cuspidata | Synonym |  | TRO |  | 
	
		| Phlox cyanea Eastw. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox dasyphylla Brand | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox decussata G.F.Lyon ex Pursh | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox dejecta A.Nelson & P.B.Kenn. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox densa Brand | Synonym |  | TRO |  | 
	
		| Phlox depressa (E.E. Nelson) Rydb. | Synonym |  | TRO |  | 
	
		| Phlox detonsa Small | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox diapensioides Rydb. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox diffusa Benth. | Accepted |  | TRO |  | 
	
		| Phlox diffusa var. diffusa | Synonym |  | TRO |  | 
	
		| Phlox diffusa subsp. diffusa | Synonym |  | TRO |  | 
	
		| Phlox diffusa subsp. scleranthifolia (Rydb.) Wherry | Accepted |  | TRO |  | 
	
		| Phlox dispersa Sharsm. | Accepted |  | TRO |  | 
	
		| Phlox disticha Sabine ex Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox divaricata L. | Accepted |  | TRO |  | 
	
		| Phlox divaricata f. divaricata | Synonym |  | TRO |  | 
	
		| Phlox divaricata var. divaricata | Synonym |  | TRO |  | 
	
		| Phlox divaricata var. occidentalis Durand | Synonym |  | TRO |  | 
	
		| Phlox divergens Wender. ex Steud. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox divergens Wender. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox dolichantha A. Gray | Accepted |  | TRO |  | 
	
		| Phlox douglasii Hook. | Accepted |  | TRO |  | 
	
		| Phlox douglasii var. andicola Britton | Synonym |  | TRO |  | 
	
		| Phlox douglasii subsp. andicola (Britton) Brand | Synonym |  | TRO |  | 
	
		| Phlox douglasii var. canescens (Torr. & A. Gray) H. Mason ex Jeps. | Synonym |  | TRO |  | 
	
		| Phlox douglasii subsp. douglasii | Synonym |  | TRO |  | 
	
		| Phlox douglasii subsp. rigida (Benth.) Wherry | Accepted |  | TRO |  | 
	
		| Phlox douglasii var. salina M.E. Jones | Synonym |  | TRO |  | 
	
		| Phlox drummondii Hook. | Accepted |  | WCSP (in review) |  | 
	
		| Phlox drummondii subsp. drummondii | Synonym |  | TRO |  | 
	
		| Phlox drummondii subsp. johnstonii (Wherry) Wherry | Accepted |  | TRO |  | 
	
		| Phlox drummondii var. littoralis Cory | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox drummondii var. tenuis A. Gray | Synonym |  | TRO |  | 
	
		| Phlox drummondii subsp. tharpii (Whitehouse) Wherry | Accepted |  | TRO |  | 
	
		| Phlox drummondii var. tharpii (Whitehouse) Erbe | Synonym |  | TRO |  | 
	
		| Phlox elata Penny ex G.Don | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox erianthema Wender. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox excelsa Penny ex G.Don | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox floridana Benth. | Accepted |  | TRO |  | 
	
		| Phlox frondosa Bailly | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox fruticosa Steud. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox gilioides A.Nelson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox glaberrima L. | Accepted |  | TRO |  | 
	
		| Phlox glaberrima var. glaberrima | Synonym |  | TRO |  | 
	
		| Phlox glaberrima subsp. glaberrima | Synonym |  | TRO |  | 
	
		| Phlox glaberrima var. triflora (Michx.) Reveal & C.R. Broome | Accepted |  | TRO |  | 
	
		| Phlox glabrata Brand | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox glabriflora Whiteh. | Accepted |  | TRO |  | 
	
		| Phlox glabriflora subsp. glabriflora | Synonym |  | TRO |  | 
	
		| Phlox glabriflora subsp. tharpii (Whitehouse) Wherry | Synonym |  | TRO |  | 
	
		| Phlox gladiformis (M.E. Jones) E.E. Nelson | Accepted |  | TRO |  | 
	
		| Phlox glomerata Nutt. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox glutinosa Buckley | Accepted |  | TRO |  | 
	
		| Phlox goldsmithii Whitehouse | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox gooddingii A.Nelson & P.B.Kenn. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox gracilis (Douglas ex Hook.) Greene | Synonym |  | TRO |  | 
	
		| Phlox gracilis var. humilior (Hook.) B. Boivin | Synonym |  | TRO |  | 
	
		| Phlox grahamii Wherry | Accepted |  | TRO |  | 
	
		| Phlox grayi Wooton & Standl. | Accepted |  | TRO |  | 
	
		| Phlox griseola Wherry | Accepted |  | TRO |  | 
	
		| Phlox hendersonii (E.E. Nelson) Cronquist | Accepted |  | TRO |  | 
	
		| Phlox × henryae Wherry | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox hentzii Nutt. | Accepted |  | TRO |  | 
	
		| Phlox heterophylla P.Beauv. ex Brand | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox heynholdii auct. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox hirsuta E.E. Nelson | Accepted |  | TRO |  | 
	
		| Phlox hoodii Richardson | Accepted |  | TRO |  | 
	
		| Phlox hoodii var. canescens (Torr. & A. Gray) M. Peck | Accepted |  | TRO |  | 
	
		| Phlox hoodii var. hoodii | Synonym |  | TRO |  | 
	
		| Phlox hookeri Douglas ex Hook. | Synonym |  | WCSP (in review) |  | 
	
		| Phlox × hortorum Bergmans | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox humilis Douglas ex Hook. | Synonym |  | TRO |  | 
	
		| Phlox × hybrida Raf. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox idahonis Wherry | Accepted |  | TRO |  | 
	
		| Phlox imminens H.St.John | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × ingramiana Loudon | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox intermedia Lodd. ex Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox involucrata Sessé & Moc. [Illegitimate] | Synonym |  | WCSP (in review) |  | 
	
		| Phlox johnstonii Wherry | Synonym |  | TRO |  | 
	
		| Phlox jonesii Wherry | Accepted |  | TRO |  | 
	
		| Phlox kelseyi Britton | Accepted |  | TRO |  | 
	
		| Phlox kelseyi var. kelseyi | Synonym |  | TRO |  | 
	
		| Phlox kelseyi var. missoulensis (Wherry) Cronquist | Accepted |  | TRO |  | 
	
		| Phlox kelseyi subsp. salina (M.E. Jones) Wherry | Accepted |  | TRO |  | 
	
		| Phlox kelseyi subsp. variabilis (Brand) Wherry | Accepted |  | TRO |  | 
	
		| Phlox × laeta Penny ex G.Don | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox lanata Piper | Accepted |  | TRO |  | 
	
		| Phlox lanceolata E.E. Nelson | Synonym |  | TRO |  | 
	
		| Phlox laphamii Clute | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox latifolia Michx. | Synonym |  | WCSP (in review) |  | 
	
		| Phlox × leopoldiana Paxton | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox lighthipei Small | Accepted |  | TRO |  | 
	
		| Phlox linearifolia (Hook.) A. Gray | Accepted |  | TRO |  | 
	
		| Phlox linearifolia var. longipes M.E. Jones | Synonym |  | TRO |  | 
	
		| Phlox linearis Cav. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox listoniana Sweet ex J.Forbes | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox littoralis (Cory) Whitehouse | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox longiflora Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox longifolia Nutt. | Accepted |  | TRO |  | 
	
		| Phlox longifolia subsp. brevifolia (A. Gray) H. Mason | Accepted |  | TRO |  | 
	
		| Phlox longifolia f. brevifolia A. Gray | Synonym |  | TRO |  | 
	
		| Phlox longifolia var. brevifolia (A. Gray) A. Gray | Synonym |  | TRO |  | 
	
		| Phlox longifolia var. compacta (Brand) M. Peck | Accepted |  | TRO |  | 
	
		| Phlox longifolia subsp. cortezana (A. Nelson) Wherry | Accepted |  | TRO |  | 
	
		| Phlox longifolia var. gladiformis M.E. Jones | Synonym |  | TRO |  | 
	
		| Phlox longifolia subsp. humilis (Douglas ex Hook.) Wherry | Accepted |  | TRO |  | 
	
		| Phlox longifolia subsp. longifolia | Synonym |  | TRO |  | 
	
		| Phlox longifolia var. longifolia | Synonym |  | TRO |  | 
	
		| Phlox longifolia subsp. longipes (M.E. Jones) Wherry | Accepted |  | TRO |  | 
	
		| Phlox longipilosa Waterf. | Accepted |  | TRO |  | 
	
		| Phlox longituba A.Heller | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox lutescens (S.L. Welsh) S.L. Welsh | Accepted |  | TRO |  | 
	
		| Phlox macrantha Buckley | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × macrophylla Court. ex Steud. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox maculata L. | Accepted |  | TRO |  | 
	
		| Phlox maculata f. candida (Michx.) Fernald | Accepted |  | TRO |  | 
	
		| Phlox maculata var. candida Michx. | Synonym |  | TRO |  | 
	
		| Phlox maculata f. maculata | Synonym |  | TRO |  | 
	
		| Phlox maculata var. maculata | Synonym |  | TRO |  | 
	
		| Phlox maculata var. nitida (Elliott) Chapm. | Accepted |  | TRO |  | 
	
		| Phlox maculata subsp. pyramidalis (Sm.) Wherry | Accepted |  | TRO |  | 
	
		| Phlox mcallisteri Whitehouse | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox melampyrifolia Salisb. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox mesoleuca Greene | Accepted |  | TRO |  | 
	
		| Phlox mexicana Wherry | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox missoulensis Wherry | Synonym |  | TRO |  | 
	
		| Phlox missourica Salm-Dyck | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox mollis Wherry | Accepted |  | TRO |  | 
	
		| Phlox montana Raf. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox multiflora A. Nelson | Accepted |  | TRO |  | 
	
		| Phlox multiflora subsp. depressa (E.E. Nelson) Wherry | Accepted |  | TRO |  | 
	
		| Phlox multiflora var. depressa E.E. Nelson | Synonym |  | TRO |  | 
	
		| Phlox muscoides Nutt. | Accepted |  | TRO |  | 
	
		| Phlox nana Nutt. | Accepted |  | TRO |  | 
	
		| Phlox nana var. glabella A. Gray | Synonym |  | TRO |  | 
	
		| Phlox nana subsp. glabella (A. Gray) Brand | Accepted |  | TRO |  | 
	
		| Phlox nana subsp. nana | Synonym |  | TRO |  | 
	
		| Phlox nelsonii G.Nicholson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox nelsonii Brand | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox nitida Elliott | Synonym |  | TRO |  | 
	
		| Phlox nivalis Lodd. | Accepted |  | TRO |  | 
	
		| Phlox nivalis f. nivalis | Synonym |  | TRO |  | 
	
		| Phlox nivalis var. nivalis | Synonym |  | TRO |  | 
	
		| Phlox nuttalliana G.Don | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox nuttallii Court. ex Steud. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox obovata Muhl. ex Roem. & Schult. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox occidentalis Durand ex Torr. | Synonym |  | WCSP (in review) |  | 
	
		| Phlox odorata Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox oklahomensis Wherry | Accepted |  | TRO |  | 
	
		| Phlox × oliverorum Locklear | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × omniflora W.H.Baxter | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox opalensis Dorn | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox ovata L. | Accepted |  | WCSP (in review) |  | 
	
		| Phlox ovata var. pulchra Wherry | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox paniculata L. | Accepted |  | TRO |  | 
	
		| Phlox pattersonii Prather | Accepted |  | TRO |  | 
	
		| Phlox patula A.Nelson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox peckii Wherry | Accepted |  | WCSP (in review) |  | 
	
		| Phlox penduliflora Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox philadelphica Steud. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox pilosa L. | Accepted |  | TRO |  | 
	
		| Phlox pilosa subsp. pilosa | Synonym |  | TRO |  | 
	
		| Phlox pilosa var. pilosa | Synonym |  | TRO |  | 
	
		| Phlox pilosa f. pilosa | Synonym |  | TRO |  | 
	
		| Phlox pilosa var. virens (Michx.) Wherry | Accepted |  | TRO |  | 
	
		| Phlox pilosa var. walteri A. Gray | Synonym |  | TRO |  | 
	
		| Phlox pinifolia Brand | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox pinnata Cav. | Synonym |  | TRO |  | 
	
		| Phlox piperi E.E.Nelson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox planitiarum A. Nelson | Synonym |  | TRO |  | 
	
		| Phlox procumbens A.Gray | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × procumbens Lehm. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox procumbens Sessé & Moc. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox procumbens Lehm. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox prostrata Aiton ex Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox puberula A.Nelson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × pulchella W.H.Baxter | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox pulcherrima (Lundell) Lundell | Accepted |  | TRO |  | 
	
		| Phlox pulchra (Wherry) Wherry | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox pulvinata (Wherry) Cronquist | Accepted |  | TRO |  | 
	
		| Phlox pungens Dorn | Accepted |  | TRO |  | 
	
		| Phlox pyramidalis Sm. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox pyramidata Sm. | Synonym |  | TRO |  | 
	
		| Phlox reflexa Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox reptans Michx. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox reticulata Pav. ex Brand | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox reticulata Sessé & Moc. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox revoluta Aikin ex A.Gray | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox richardsonii Hook. | Accepted |  | TRO |  | 
	
		| Phlox rigida Benth. | Synonym |  | TRO |  | 
	
		| Phlox roemeriana Scheele | Accepted |  | TRO |  | 
	
		| Phlox rosea J.Forbes | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox rugelii Brand | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox sabinii Douglas | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox scabra Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox scleranthifolia Rydb. | Synonym |  | TRO |  | 
	
		| Phlox setacea L. | Synonym |  | TRO |  | 
	
		| Phlox sevorsa A.Nelson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × shepherdii Penny ex Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox sibirica L. | Accepted |  | TRO |  | 
	
		| Phlox sibirica var. alaskensis (Jordal) S.L. Welsh | Synonym |  | TRO |  | 
	
		| Phlox sibirica subsp. alaskensis (Jordal) Á. Löve & D. Löve | Accepted |  | TRO |  | 
	
		| Phlox sibirica var. borealis (Wherry) B. Boivin | Accepted |  | TRO |  | 
	
		| Phlox sibirica subsp. sibirica | Synonym |  | TRO |  | 
	
		| Phlox sickmannii Lehm. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox siebmanni Benth. | Unresolved |  | TRO |  | 
	
		| Phlox speciosa Pursh | Accepted |  | TRO |  | 
	
		| Phlox speciosa var. lanceolata (E.E. Nelson) M. Peck | Accepted |  | TRO |  | 
	
		| Phlox speciosa var. linearifolia Hook. | Synonym |  | TRO |  | 
	
		| Phlox speciosa var. occidentalis (Durand ex Torr.) M.Peck | Synonym |  | WCSP (in review) |  | 
	
		| Phlox speciosa f. occidentalis (Durand ex Torr.) Brand | Synonym |  | WCSP (in review) |  | 
	
		| Phlox speciosa subsp. occidentalis (Durand ex Torr.) Wherry | Accepted |  | WCSP (in review) |  | 
	
		| Phlox speciosa var. speciosa | Synonym |  | TRO |  | 
	
		| Phlox speciosa var. stansburyi Torr. | Synonym |  | TRO |  | 
	
		| Phlox speciosa var. suksdorfii Brand | Synonym |  | TRO |  | 
	
		| Phlox speciosa var. woodhousei A. Gray | Synonym |  | TRO |  | 
	
		| Phlox spinosilla Sessé & Moc. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox stansburyi (Torr.) A. Heller | Accepted |  | TRO |  | 
	
		| Phlox stansburyi var. compacta Brand | Synonym |  | TRO |  | 
	
		| Phlox stansburyi var. stansburyi | Synonym |  | TRO |  | 
	
		| Phlox × stellaria auct. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox stellaria A. Gray | Synonym |  | TRO |  | 
	
		| Phlox stellaria var. cedaria Brand | Synonym |  | TRO |  | 
	
		| Phlox stolonifera Sims | Accepted |  | TRO |  | 
	
		| Phlox suaveolens Aiton | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox subulata L. | Accepted |  | TRO |  | 
	
		| Phlox subulata var. setacea (L.) Brand | Accepted |  | TRO |  | 
	
		| Phlox subulata var. subulata | Synonym |  | TRO |  | 
	
		| Phlox subulata f. subulata | Synonym |  | TRO |  | 
	
		| Phlox suffruticosa Vent. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox suffruticosa Willd. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox suksdorfii (Brand) H. St. John | Accepted |  | TRO |  | 
	
		| Phlox superba Brand | Accepted |  | TRO |  | 
	
		| Phlox tardiflora Penny ex Loudon | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox tenuifolia E.E. Nelson | Accepted |  | TRO |  | 
	
		| Phlox tenuis (A. Gray) E.E. Nelson | Accepted |  | TRO |  | 
	
		| Phlox texensis (Lundell) Lundell | Accepted |  | TRO |  | 
	
		| Phlox tharpii Whitehouse | Synonym |  | TRO |  | 
	
		| Phlox thomsonii Court. ex Steud. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox tigrina Wender. ex Steud. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox tigrina Wender. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox triflora Michx. | Synonym |  | TRO |  | 
	
		| Phlox triovulata Thurb. ex Torr. | Accepted |  | TRO |  | 
	
		| Phlox tumulosa Wherry | Accepted |  | TRO |  | 
	
		| Phlox undulata Aiton | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox unidentata Bertero ex Colla | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox uniflora Raf. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox variabilis Brand | Synonym |  | TRO |  | 
	
		| Phlox vermejoensis B.S. Legler | Unresolved |  | TRO |  | 
	
		| Phlox × verna J.Forbes | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox vernalis Salisb. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × vernoniana W.H.Baxter | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox villosissima Small | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox violacea Sessé & Moc. | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox virginica Lodd. ex Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox virida E.E.Nelson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox viridis E.E. Nelson | Accepted |  | TRO |  | 
	
		| Phlox viscida E.E. Nelson | Accepted |  | TRO |  | 
	
		| Phlox visenda A.Nelson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox walteri (A. Gray) Chapm. | Accepted |  | TRO |  | 
	
		| Phlox × wheeleriana Sweet | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox wherryi Heath | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox whitedii E.Nelson | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox × whittakeri Locklear | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox wilcoxiana Bogusch | Unresolved |  | WCSP (in review) |  | 
	
		| Phlox woodhousei (A. Gray) E.E. Nelson | Accepted |  | TRO |  |