| Plagiobothrys acanthocarpus (Piper) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys acanthocarpus f. papillatus (Piper) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys adpressus Gand. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys albiflorus R.L. Pérez-Mor. | Synonym |  | TRO | 
	
		| Plagiobothrys allocaryoides Brand | Synonym |  | TRO | 
	
		| Plagiobothrys arizonicus (A. Gray) Greene ex A. Gray | Accepted |  | TRO | 
	
		| Plagiobothrys arizonicus var. catalinensis A. Gray | Synonym |  | TRO | 
	
		| Plagiobothrys armeriifolius I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys asiaticus I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys asper Greene | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys aurantiacus Brand | Synonym |  | TRO | 
	
		| Plagiobothrys austiniae (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys australasicus I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys borneensis I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys bracteatus (Howell) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys bracteatus var. aculeolatus (Piper) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys calandrinioides I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys californicus (A. Gray) Greene | Accepted |  | TRO | 
	
		| Plagiobothrys campestris Greene | Synonym |  | TRO | 
	
		| Plagiobothrys canescens Benth. | Synonym |  | TRO | 
	
		| Plagiobothrys canescens var. catalinensis (A. Gray) Jeps. | Unresolved |  | TRO | 
	
		| Plagiobothrys catalinensis (A. Gray) J.F. Macbr. | Synonym |  | TRO | 
	
		| Plagiobothrys chorisianus (Cham.) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys chorisianus var. hickmanii (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys chrysocephalus Gand. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys cognatus (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys collinus I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys collinus var. californicus (A.Gray) L.C.Higgins | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys collinus var. fulvescens (I.M.Johnst.) L.C.Higgins | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys collinus var. gracilis (I.M.Johnst.) L.C.Higgins | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys collinus var. ursinus (A.Gray) L.C.Higgins | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys colorans Greene | Synonym |  | TRO | 
	
		| Plagiobothrys congestus (Wedd.) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys cooperi A.Gray | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys corymbosus I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys cusickii (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys diffusus (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys dispar (Piper) I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys distantiflorus (Piper) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys divergens (Piper) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys echinatus Greene | Synonym |  | TRO | 
	
		| Plagiobothrys elachanthus I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys figuratus (Piper) I.M.Johnst. | Accepted |  | WCSP (in review) | 
	
		| Plagiobothrys figuratus var. corallicarpus (Piper) K.L. Chambers | Accepted |  | TRO | 
	
		| Plagiobothrys foliaceus (Greene) A. Nelson & J.F. Macbr. | Synonym |  | TRO | 
	
		| Plagiobothrys foliosus I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys fulvus (Hook. & Arn.) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys fulvus var. campestris (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys germainii I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys glaber (A. Gray) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys glomeratus A. Gray | Synonym |  | TRO | 
	
		| Plagiobothrys glyptocarpus (Piper) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys glyptocarpus var. modestus I.M. Johnst. | Synonym |  | TRO | 
	
		| Plagiobothrys gracilis I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys granulatus (Piper) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys greenei (A. Gray) I.M. Johnst. | Synonym |  | TRO | 
	
		| Plagiobothrys harknessii (Greene) A. Nelson & J.F. Macbr. | Synonym |  | TRO | 
	
		| Plagiobothrys hirtus (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys hirtus var. corallicarpus (Piper) I.M. Johnst. | Synonym |  | TRO | 
	
		| Plagiobothrys hirtus var. figuratus (Piper) I.M. Johnst. | Synonym |  | TRO | 
	
		| Plagiobothrys hispidulus (Greene) I.M. Johnst. | Synonym |  | TRO | 
	
		| Plagiobothrys hispidus A. Gray | Synonym |  | TRO | 
	
		| Plagiobothrys hispidus var. foliaceus (Greene) I.M. Johnst. | Unresolved |  | TRO | 
	
		| Plagiobothrys humifusa M.E. Jones | Unresolved |  | TRO | 
	
		| Plagiobothrys humilis (Ruiz & Pav.) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys humistratus (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys hystriculus (Piper) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys infectivus I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys jonesii A. Gray | Accepted |  | TRO | 
	
		| Plagiobothrys kingii (S. Watson) A. Gray | Synonym |  | TRO | 
	
		| Plagiobothrys kingii var. harknessii (Greene) Jeps. | Unresolved |  | TRO | 
	
		| Plagiobothrys kunthii (Walp.) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys lamprocarpus (Piper) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys laxus Greene ex C.F. Baker | Unresolved |  | TRO | 
	
		| Plagiobothrys lechleri I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys leptocladus (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys linifolius (Willd. ex Lehm.) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys lithocaryus (Greene ex A. Gray) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys macbridei I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys medius (Piper) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys mesembryanthemoides (Speg.) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys mexicanus (J.F. Macbr.) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys micranthus A.Nelson | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys microcarpus Greene | Unresolved |  | TRO | 
	
		| Plagiobothrys minutus I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys mollis (A. Gray) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys mollis var. vestitus (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys muricatus I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys myosotoides (Lehm.) Brand | Accepted |  | WCSP (in review) | 
	
		| Plagiobothrys nelsonii (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys nevadensis Gand. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys nitens (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys nothofulvus (A. Gray) A. Gray | Accepted |  | TRO | 
	
		| Plagiobothrys oppositifolius I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys oriemtalis I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys orientalis I.M. Johnst. | Unresolved |  | TRO | 
	
		| Plagiobothrys orthocarpus (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys orthostatus J.M.Black | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys parishii I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys parvulus Greene | Synonym |  | TRO | 
	
		| Plagiobothrys patagonicus I.M. Johnst. | Synonym |  | TRO | 
	
		| Plagiobothrys pedicellaris I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys piperi I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys plebeius (Cham.) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys plebejus I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys plurisepalus I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys polycaulis (Phil.) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys pratensis I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys pringlei Greene | Accepted |  | TRO | 
	
		| Plagiobothrys procumbens (Colla) Colla | Synonym |  | TRO | 
	
		| Plagiobothrys pulchellus I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys pygmaeus (Kunth) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys reticulatus (Piper) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys rufescens Fisch. & C.A.Mey. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys rufescens var. campestris (Greene) Jeps. | Synonym |  | TRO | 
	
		| Plagiobothrys salsus (Brandegee) I.M. Johnst. | Synonym |  | TRO | 
	
		| Plagiobothrys scopulorum (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys scouleri var. corallicarpus (Piper) I.M. Johnst. | Synonym |  | TRO | 
	
		| Plagiobothrys scouleri var. cusickii (Greene) L.C.Higgins | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys scouleri var. hirtus (Greene) I.M. Johnst. | Synonym |  | TRO | 
	
		| Plagiobothrys scouleri var. hispidulus (Greene) Dorn | Accepted |  | TRO | 
	
		| Plagiobothrys scouleri subsp. penicillatus (Greene) Á. Löve & D. Löve | Accepted |  | TRO | 
	
		| Plagiobothrys scouleri var. penicillatus (Greene) Cronquist | Synonym |  | TRO | 
	
		| Plagiobothrys scriptus (Greene) I.M. Johnst. | Synonym |  | TRO | 
	
		| Plagiobothrys shastensis Greene ex A.Gray | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys stipitatus (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys stipitatus var. micranthus (Piper) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys strictus (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys tenellus (C.A.Mey. ex Ledeb.) A.Gray | Accepted |  | WCSP (in review) | 
	
		| Plagiobothrys tenellus var. colorans (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys tenellus var. echinatus (Greene) Brand | Accepted |  | TRO | 
	
		| Plagiobothrys tenellus var. parvulus (Greene) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys tener (Greene) I.M. Johnst. | Synonym |  | TRO | 
	
		| Plagiobothrys tenuifolius I.M.Johnst. | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys tinctorius A.Gray | Synonym |  | WCSP (in review) | 
	
		| Plagiobothrys torreyi (A. Gray) A. Gray | Accepted |  | TRO | 
	
		| Plagiobothrys trachycarpus (A. Gray) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys uliginosus I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys uncinatus J.T.Howell | Unresolved |  | WCSP (in review) | 
	
		| Plagiobothrys undulatus (Piper) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys ursinus (A. Gray) A. Gray | Synonym |  | TRO | 
	
		| Plagiobothrys verrucosus (Phil.) I.M. Johnst. | Accepted |  | TRO | 
	
		| Plagiobothrys zollingeri I.M.Johnst. | Unresolved |  | WCSP (in review) |