| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| PHNEO | Phacelia nemoralis Greene ssp. oregonensis Heckard | Oregon phacelia | Hydrophyllaceae
|
| PHNE2 | Phacelia nemoralis Greene | shade phacelia | Hydrophyllaceae
|
| PHNEA | Phacelia neomexicana Thurb. ex Torr. var. alba (Rydb.) Brand | Phacelia alba | Hydrophyllaceae
|
| PHNEP | Phacelia neomexicana Thurb. ex Torr. var. pseudoarizonica (Brand) J. Voss | Phacelia neomexicana | Hydrophyllaceae
|
| PHNE3 | Phacelia neomexicana Thurb. ex Torr. | New Mexico phacelia | Hydrophyllaceae
|
| PHNE7 | Phacelia nevadensis J.T. Howell | Phacelia incana | Hydrophyllaceae
|
| PHNO | Phacelia novenmillensis Munz | Nine Mile Canyon phacelia | Hydrophyllaceae
|
| PHORS | Phacelia oreopola Heckard ssp. simulans Heckard | Phacelia hastata var. hastata | Hydrophyllaceae
|
| PHOR3 | Phacelia oreopola Heckard | Phacelia imbricata ssp. patula | Hydrophyllaceae
|
| PHOR | Phacelia orogenes Brand | mountain phacelia | Hydrophyllaceae
|
| PHPA | Phacelia pachyphylla Gray | blacktack phacelia | Hydrophyllaceae
|
| PHPA15 | Phacelia pallida I.M. Johnston | pale phacelia | Hydrophyllaceae
|
| PHPAF | Phacelia palmeri Torr. ex S. Wats. var. foetida (Goodding) Brand | Phacelia palmeri | Hydrophyllaceae
|
| PHPA13 | Phacelia palmeri Torr. ex S. Wats. | Palmer's phacelia | Hydrophyllaceae
|
| PHPA2 | Phacelia parishii Gray | Parish's phacelia | Hydrophyllaceae
|
| PHPAC2 | Phacelia parryi Torr. var. celata Jepson & Hoover ex Jepson | Phacelia parryi | Hydrophyllaceae
|
| PHPA3 | Phacelia parryi Torr. | Parry's phacelia | Hydrophyllaceae
|
| PHPAA | Phacelia patuliflora (Engelm. & Gray) Gray var. austrotexana J.A. Moyer | sand phacelia | Hydrophyllaceae
|
| PHPAP2 | Phacelia patuliflora (Engelm. & Gray) Gray var. patuliflora | sand phacelia | Hydrophyllaceae
|
| PHPAT | Phacelia patuliflora (Engelm. & Gray) Gray var. teucriifolia (I.M. Johnston) Constance | sand phacelia | Hydrophyllaceae
|
| PHPA4 | Phacelia patuliflora (Engelm. & Gray) Gray | sand phacelia | Hydrophyllaceae
|
| PHPE8 | Phacelia peckii J.T. Howell | Peck's phacelia | Hydrophyllaceae
|
| PHPE | Phacelia pedicellata Gray | pedicellate phacelia | Hydrophyllaceae
|
| PHPE9 | Phacelia pediculoides (J.T. Howell) Constance | Phacelia ivesiana var. pediculoides | Hydrophyllaceae
|
| PHPE2 | Phacelia peirsoniana J.T. Howell | handsome phacelia | Hydrophyllaceae
|
| PHPEJ | Phacelia perityloides Coville var. jaegeri Munz | Phacelia geraniifolia | Hydrophyllaceae
|
| PHPEL | Phacelia perityloides Coville var. laxiflora (J.T. Howell) Cronq. | Phacelia laxiflora | Hydrophyllaceae
|
| PHPE3 | Phacelia perityloides Coville | Panamint phacelia | Hydrophyllaceae
|
| PHPH | Phacelia phacelioides (Benth.) Brand | Mt. Diablo phacelia | Hydrophyllaceae
|
| PHPL | Phacelia platyloba Gray | broadlobe phacelia | Hydrophyllaceae
|
| PHPOA2 | Phacelia popei Torr. & Gray var. arizonica (Gray) J. Voss | Phacelia arizonica | Hydrophyllaceae
|
| PHPOS2 | Phacelia popei Torr. & Gray var. similis (Woot. & Standl.) J. Voss | Phacelia popei | Hydrophyllaceae
|
| PHPO | Phacelia popei Torr. & Gray | Pope's phacelia | Hydrophyllaceae
|
| PHPR | Phacelia pringlei Gray | Pringle's phacelia | Hydrophyllaceae
|
| PHPR2 | Phacelia procera Gray | tall phacelia | Hydrophyllaceae
|
| PHPUA | Phacelia pulchella Gray var. atwoodii Welsh | Atwood's phacelia | Hydrophyllaceae
|
| PHPUG | Phacelia pulchella Gray var. gooddingii (Brand) J.T. Howell | Goodding's phacelia | Hydrophyllaceae
|
| PHPUP3 | Phacelia pulchella Gray var. pulchella | beautiful phacelia | Hydrophyllaceae
|
| PHPUS | Phacelia pulchella Gray var. sabulonum J.T. Howell | beautiful phacelia | Hydrophyllaceae
|
| PHPUT | Phacelia pulchella Gray var. typica J.T. Howell | Phacelia pulchella var. pulchella | Hydrophyllaceae
|
| PHPU | Phacelia pulchella Gray | beautiful phacelia | Hydrophyllaceae
|
| PHPU2 | Phacelia purpusii Brandeg. | Purpus' phacelia | Hydrophyllaceae
|
| PHPU3 | Phacelia purshii Buckl. | Miami mist | Hydrophyllaceae
|
| PHQU | Phacelia quickii J.T. Howell | Quick's phacelia | Hydrophyllaceae
|
| PHRA | Phacelia racemosa (Kellogg) Brandeg. | racemose phacelia | Hydrophyllaceae
|
| PHRA9 | Phacelia rafaelensis Atwood | plateau phacelia | Hydrophyllaceae
|
| PHRAA | Phacelia ramosissima Dougl. ex Lehm. var. austrolitoralis Munz | branching phacelia | Hydrophyllaceae
|
| PHRAE | Phacelia ramosissima Dougl. ex Lehm. var. eremophila (Greene) J.F. Macbr. | branching phacelia | Hydrophyllaceae
|
| PHRAL | Phacelia ramosissima Dougl. ex Lehm. var. latifolia (Torr.) Cronq. | branching phacelia | Hydrophyllaceae
|
| PHRAM | Phacelia ramosissima Dougl. ex Lehm. var. montereyensis Munz | branching phacelia | Hydrophyllaceae
|
| PHRAR | Phacelia ramosissima Dougl. ex Lehm. var. ramosissima | branching phacelia | Hydrophyllaceae
|
| PHRAS2 | Phacelia ramosissima Dougl. ex Lehm. var. subglabra M.E. Peck | branching phacelia | Hydrophyllaceae
|
| PHRAS | Phacelia ramosissima Dougl. ex Lehm. var. suffrutescens (Parry) Gray | Phacelia ramosissima var. latifolia | Hydrophyllaceae
|
| PHRAV | Phacelia ramosissima Dougl. ex Lehm. var. valida M.E. Peck | Phacelia ramosissima var. eremophila | Hydrophyllaceae
|
| PHRA2 | Phacelia ramosissima Dougl. ex Lehm. | branching phacelia | Hydrophyllaceae
|
| PHRA3 | Phacelia ranunculacea (Nutt.) Constance | oceanblue phacelia | Hydrophyllaceae
|
| PHRA4 | Phacelia rattanii Gray | Rattan's phacelia | Hydrophyllaceae
|
| PHRO | Phacelia robusta (J.F. Macbr.) I.M. Johnston | stout phacelia | Hydrophyllaceae
|
| PHRO2 | Phacelia rotundifolia Torr. ex S. Wats. | roundleaf phacelia | Hydrophyllaceae
|
| PHRU2 | Phacelia rupestris Greene | rock phacelia | Hydrophyllaceae
|
| PHSA3 | Phacelia salina (A. Nels.) J.T. Howell | Bitter Creek phacelia | Hydrophyllaceae
|
| PHSA | Phacelia saxicola Gray | stonecrop phacelia | Hydrophyllaceae
|
| PHSCS2 | Phacelia scopulina (A. Nels.) J.T. Howell var. scopulina | Debeque phacelia | Hydrophyllaceae
|
| PHSCS3 | Phacelia scopulina (A. Nels.) J.T. Howell var. submutica (J.T. Howell) Halse | Debeque phacelia | Hydrophyllaceae
|
| PHSC5 | Phacelia scopulina (A. Nels.) J.T. Howell | Debeque phacelia | Hydrophyllaceae
|
| PHSEC | Phacelia sericea (Graham) Gray ssp. ciliosa (Rydb.) Gillett | silky phacelia | Hydrophyllaceae
|
| PHSES | Phacelia sericea (Graham) Gray ssp. sericea | silky phacelia | Hydrophyllaceae
|
| PHSEB | Phacelia sericea (Graham) Gray var. biennis (A. Nels.) Brand | Phacelia heterophylla ssp. heterophylla | Hydrophyllaceae
|
| PHSEC3 | Phacelia sericea (Graham) Gray var. caespitosa Brand | Phacelia sericea ssp. sericea | Hydrophyllaceae
|
| PHSEC2 | Phacelia sericea (Graham) Gray var. ciliosa Rydb. | Phacelia sericea ssp. ciliosa | Hydrophyllaceae
|
| PHSE | Phacelia sericea (Graham) Gray | silky phacelia | Hydrophyllaceae
|
| PHSE5 | Phacelia serrata J. Voss | saw phacelia | Hydrophyllaceae
|
| PHSP3 | Phacelia splendens Eastw. | patch phacelia | Hydrophyllaceae
|
| PHST6 | Phacelia stebbinsii Constance & Heckard | Stebbins' phacelia | Hydrophyllaceae
|
| PHST7 | Phacelia stellaris Brand | star phacelia | Hydrophyllaceae
|
| PHSTC | Phacelia strictiflora (Engelm. & Gray) Gray var. connexa Constance | prairie phacelia | Hydrophyllaceae
|
| PHSTL | Phacelia strictiflora (Engelm. & Gray) Gray var. lundelliana Constance | Lundell's phacelia | Hydrophyllaceae
|
| PHSTR | Phacelia strictiflora (Engelm. & Gray) Gray var. robbinsii Constance | Robbins' phacelia | Hydrophyllaceae
|
| PHSTS2 | Phacelia strictiflora (Engelm. & Gray) Gray var. strictiflora | prairie phacelia | Hydrophyllaceae
|
| PHST | Phacelia strictiflora (Engelm. & Gray) Gray | prairie phacelia | Hydrophyllaceae
|
| PHSUK | Phacelia suaveolens Greene ssp. keckii (Munz & Johnston) Thorne | Keck's phacelia | Hydrophyllaceae
|
| PHSUS | Phacelia suaveolens Greene ssp. suaveolens | sweetscented phacelia | Hydrophyllaceae
|
| PHSUK2 | Phacelia suaveolens Greene var. keckii (Munz & Johnston) J.T. Howell | Phacelia suaveolens ssp. keckii | Hydrophyllaceae
|
| PHSU | Phacelia suaveolens Greene | sweetscented phacelia | Hydrophyllaceae
|
| PHSU6 | Phacelia submutica J.T. Howell | Phacelia scopulina var. submutica | Hydrophyllaceae
|
| PHSU9 | Phacelia suffrutescens Parry | Phacelia ramosissima var. latifolia | Hydrophyllaceae
|
| PHTA | Phacelia tanacetifolia Benth. | lacy phacelia | Hydrophyllaceae
|
| PHTE10 | Phacelia tenuipes Woot. & Standl. | Phacelia bombycina | Hydrophyllaceae
|
| PHTE | Phacelia tetramera J.T. Howell | fourpart phacelia | Hydrophyllaceae
|
| PHTE12 | Phacelia texana J. Voss | Phacelia integrifolia var. texana | Hydrophyllaceae
|
| PHTH | Phacelia thermalis Greene | heated phacelia | Hydrophyllaceae
|
| PHUM2 | Phacelia umbrosa Greene | Colorado Desert phacelia | Hydrophyllaceae
|
| PHUT | Phacelia utahensis J. Voss | Utah phacelia | Hydrophyllaceae
|
| PHVA | Phacelia vallicola Congd. ex Brand | Mariposa phacelia | Hydrophyllaceae
|
| PHVAH | Phacelia vallis-mortae J. Voss var. heliophila (J.F. Macbr.) J. Voss | sunloving phacelia | Hydrophyllaceae
|
| PHVAV2 | Phacelia vallis-mortae J. Voss var. vallis-mortae | Death Valley phacelia | Hydrophyllaceae
|
| PHVA2 | Phacelia vallis-mortae J. Voss | Death Valley phacelia | Hydrophyllaceae
|
| PHVE3 | Phacelia verna T.J. Howell | spring phacelia | Hydrophyllaceae
|
| PHVI | Phacelia viscida (Benth. ex Lindl.) Torr. | tacky phacelia | Hydrophyllaceae
|
| PHWE | Phacelia welshii Atwood | Welsh's phacelia | Hydrophyllaceae
|
| PHWH | Phacelia whitlavia Gray | Phacelia minor | Hydrophyllaceae
|