| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| PHGL2 | Phacelia glandulifera Piper | sticky phacelia | Hydrophyllaceae
|
| PHGLD | Phacelia glandulosa Nutt. var. deserta (A. Nels.) Brand | glandular phacelia | Hydrophyllaceae
|
| PHGLG4 | Phacelia glandulosa Nutt. var. glandulosa | glandular phacelia | Hydrophyllaceae
|
| PHGL3 | Phacelia glandulosa Nutt. | glandular phacelia | Hydrophyllaceae
|
| PHGL13 | Phacelia glechomifolia Gray | pennyroyal leaf phacelia | Hydrophyllaceae
|
| PHGR | Phacelia grandiflora (Benth.) Gray | largeflower phacelia | Hydrophyllaceae
|
| PHGR2 | Phacelia greenei J.T. Howell | Scott Valley phacelia | Hydrophyllaceae
|
| PHGR3 | Phacelia grisea Gray | Santa Lucia phacelia | Hydrophyllaceae
|
| PHGY | Phacelia gymnoclada Torr. ex S. Wats. | nakedstem phacelia | Hydrophyllaceae
|
| PHHA2 | Phacelia hardhamiae Munz | Phacelia longipes | Hydrophyllaceae
|
| PHHAC | Phacelia hastata Dougl. ex Lehm. ssp. compacta (Brand) Heckard | Phacelia hastata var. compacta | Hydrophyllaceae
|
| PHHAA | Phacelia hastata Dougl. ex Lehm. var. alpina (Rydb.) Cronq. | Phacelia hastata var. hastata | Hydrophyllaceae
|
| PHHAC2 | Phacelia hastata Dougl. ex Lehm. var. charlestonensis Cronq. | Charleston phacelia | Hydrophyllaceae
|
| PHHAC3 | Phacelia hastata Dougl. ex Lehm. var. compacta (Brand) Cronq. | compact phacelia | Hydrophyllaceae
|
| PHHAD | Phacelia hastata Dougl. ex Lehm. var. dasyphylla (Greene ex J.F. Macbr.) Kartesz & Gandhi | spearshaped phacelia | Hydrophyllaceae
|
| PHHAH | Phacelia hastata Dougl. ex Lehm. var. hastata | silverleaf phacelia | Hydrophyllaceae
|
| PHHAL2 | Phacelia hastata Dougl. ex Lehm. var. leptosepala (Rydb.) Cronq. | Phacelia leptosepala | Hydrophyllaceae
|
| PHHAL | Phacelia hastata Dougl. ex Lehm. var. leucophylla (Torr.) Cronq. | Phacelia hastata var. hastata | Hydrophyllaceae
|
| PHHA | Phacelia hastata Dougl. ex Lehm. | silverleaf phacelia | Hydrophyllaceae
|
| PHHEH | Phacelia heterophylla Pursh ssp. heterophylla | varileaf phacelia | Hydrophyllaceae
|
| PHHEV | Phacelia heterophylla Pursh ssp. virgata (Greene) Heckard | varileaf phacelia | Hydrophyllaceae
|
| PHHED | Phacelia heterophylla Pursh var. dasyphylla Greene ex J.F. Macbr. | Phacelia hastata var. dasyphylla | Hydrophyllaceae
|
| PHHEG | Phacelia heterophylla Pursh var. griseophylla (Brand) J.F. Macbr. | Phacelia mutabilis | Hydrophyllaceae
|
| PHHEP3 | Phacelia heterophylla Pursh var. pseudohispida (Brand) Cronq. | Phacelia mutabilis | Hydrophyllaceae
|
| PHHET | Phacelia heterophylla Pursh var. typica Dundas | Phacelia heterophylla ssp. heterophylla | Hydrophyllaceae
|
| PHHEV3 | Phacelia heterophylla Pursh var. virgata (Greene) Dorn | Phacelia heterophylla ssp. virgata | Hydrophyllaceae
|
| PHHE2 | Phacelia heterophylla Pursh | varileaf phacelia | Hydrophyllaceae
|
| PHHI | Phacelia hirsuta Nutt. | fuzzy phacelia | Hydrophyllaceae
|
| PHHO2 | Phacelia howelliana Atwood | harlequin phacelia | Hydrophyllaceae
|
| PHHUD | Phacelia humilis Torr. & Gray var. dudleyi J.T. Howell | Dudley's phacelia | Hydrophyllaceae
|
| PHHUH | Phacelia humilis Torr. & Gray var. humilis | low phacelia | Hydrophyllaceae
|
| PHHUL | Phacelia humilis Torr. & Gray var. lobata A. Davids. | Phacelia austromontana | Hydrophyllaceae
|
| PHHU | Phacelia humilis Torr. & Gray | low phacelia | Hydrophyllaceae
|
| PHHY | Phacelia hydrophylloides Torr. ex Gray | waterleaf phacelia | Hydrophyllaceae
|
| PHID | Phacelia idahoensis Henderson | Idaho phacelia | Hydrophyllaceae
|
| PHIMB | Phacelia imbricata Greene ssp. bernardina (Greene) Heckard | Phacelia imbricata ssp. imbricata | Hydrophyllaceae
|
| PHIMI | Phacelia imbricata Greene ssp. imbricata | imbricate phacelia | Hydrophyllaceae
|
| PHIMP | Phacelia imbricata Greene ssp. patula (Brand) Heckard | imbricate phacelia | Hydrophyllaceae
|
| PHIM | Phacelia imbricata Greene | imbricate phacelia | Hydrophyllaceae
|
| PHIN9 | Phacelia incana Brand | hoary phacelia | Hydrophyllaceae
|
| PHIN10 | Phacelia inconspicua Greene | hidden phacelia | Hydrophyllaceae
|
| PHIN11 | Phacelia indecora J.T. Howell | drab phacelia | Hydrophyllaceae
|
| PHIN12 | Phacelia infundibuliformis Torr. | Rio Grande phacelia | Hydrophyllaceae
|
| PHINC2 | Phacelia insularis Munz var. continentis J.T. Howell | North Coast phacelia | Hydrophyllaceae
|
| PHINI4 | Phacelia insularis Munz var. insularis | northern Channel Islands phacelia | Hydrophyllaceae
|
| PHIN13 | Phacelia insularis Munz | coast phacelia | Hydrophyllaceae
|
| PHINI5 | Phacelia integrifolia Torr. var. integrifolia | gypsum phacelia | Hydrophyllaceae
|
| PHINT | Phacelia integrifolia Torr. var. texana (J. Voss) Atwood | Texan phacelia | Hydrophyllaceae
|
| PHINT2 | Phacelia integrifolia Torr. var. typica J. Voss | Phacelia integrifolia var. integrifolia | Hydrophyllaceae
|
| PHIN | Phacelia integrifolia Torr. | gypsum phacelia | Hydrophyllaceae
|
| PHIN2 | Phacelia intermedia Woot. p.p. | Phacelia caerulea | Hydrophyllaceae
|
| PHIN2 | Phacelia intermedia Woot. p.p. | Phacelia crenulata var. crenulata | Hydrophyllaceae
|
| PHIN3 | Phacelia inundata J.T. Howell | playa yellow phacelia | Hydrophyllaceae
|
| PHIN4 | Phacelia inyoensis (J.F. Macbr.) J.T. Howell | Inyo phacelia | Hydrophyllaceae
|
| PHIVG | Phacelia ivesiana Torr. var. glandulifera (Piper) A. Nels. & J.F. Macbr. | Phacelia glandulifera | Hydrophyllaceae
|
| PHIVI | Phacelia ivesiana Torr. var. ivesiana | Ives' phacelia | Hydrophyllaceae
|
| PHIVP | Phacelia ivesiana Torr. var. pediculoides J.T. Howell | Ives' phacelia | Hydrophyllaceae
|
| PHIVT | Phacelia ivesiana Torr. var. typica J.T. Howell | Phacelia ivesiana var. ivesiana | Hydrophyllaceae
|
| PHIV | Phacelia ivesiana Torr. | Ives' phacelia | Hydrophyllaceae
|
| PHIX2 | Phacelia ixodes Kellogg | Costa Baja phacelia | Hydrophyllaceae
|
| PHKE2 | Phacelia keckii Munz & Johnston | Phacelia suaveolens ssp. keckii | Hydrophyllaceae
|
| PHLA | Phacelia laxa Small | coastal phacelia | Hydrophyllaceae
|
| PHLA8 | Phacelia laxiflora J.T. Howell | dozing phacelia | Hydrophyllaceae
|
| PHLE6 | Phacelia leibergii Brand | Leiberg's phacelia | Hydrophyllaceae
|
| PHLE | Phacelia lemmonii Gray | Lemmon's phacelia | Hydrophyllaceae
|
| PHLE12 | Phacelia lenta Piper | sticky phacelia | Hydrophyllaceae
|
| PHLE2 | Phacelia leonis J.T. Howell | Siskiyou phacelia | Hydrophyllaceae
|
| PHLE7 | Phacelia leptosepala Rydb. | narrowsepal phacelia | Hydrophyllaceae
|
| PHLEA2 | Phacelia leucophylla Torr. var. alpina (Rydb.) Dundas | Phacelia hastata var. hastata | Hydrophyllaceae
|
| PHLES | Phacelia leucophylla Torr. var. suksdorfii J.F. Macbr. | Phacelia hastata var. hastata | Hydrophyllaceae
|
| PHLE16 | Phacelia leucophylla Torr. | Phacelia hastata var. hastata | Hydrophyllaceae
|
| PHLI | Phacelia linearis (Pursh) Holz. | threadleaf phacelia | Hydrophyllaceae
|
| PHLO8 | Phacelia lobata (A. Davids.) Jepson | Phacelia austromontana | Hydrophyllaceae
|
| PHLO | Phacelia longipes Torr. ex Gray | longstalk phacelia | Hydrophyllaceae
|
| PHLUC | Phacelia lutea (Hook. & Arn.) J.T. Howell var. calva Cronq. | Owyhee phacelia | Hydrophyllaceae
|
| PHLUG | Phacelia lutea (Hook. & Arn.) J.T. Howell var. glandulifera (Torr. ex S. Wats.) Cronq. | Phacelia adenophora | Hydrophyllaceae
|
| PHLUL2 | Phacelia lutea (Hook. & Arn.) J.T. Howell var. lutea | yellow phacelia | Hydrophyllaceae
|
| PHLUM | Phacelia lutea (Hook. & Arn.) J.T. Howell var. mackenzieorum J. Grimes & Packard | MacKenzie's phacelia | Hydrophyllaceae
|
| PHLUP | Phacelia lutea (Hook. & Arn.) J.T. Howell var. purpurascens J.T. Howell | Phacelia lutea var. lutea | Hydrophyllaceae
|
| PHLUS | Phacelia lutea (Hook. & Arn.) J.T. Howell var. scopulina (A. Nels.) Cronq. | Phacelia scopulina var. scopulina | Hydrophyllaceae
|
| PHLUS2 | Phacelia lutea (Hook. & Arn.) J.T. Howell var. submutica (J.T. Howell) Cronq. | Phacelia scopulina var. submutica | Hydrophyllaceae
|
| PHLU | Phacelia lutea (Hook. & Arn.) J.T. Howell | yellow phacelia | Hydrophyllaceae
|
| PHLY2 | Phacelia lyallii (Gray) Rydb. | alpine phacelia | Hydrophyllaceae
|
| PHLY | Phacelia lyonii (Gray) Rydb. | Lyon's phacelia | Hydrophyllaceae
|
| PHMA9 | Phacelia maculata Wood | spotted phacelia | Hydrophyllaceae
|
| PHMA13 | Phacelia magellanica (Lam.) Coville p.p. | Phacelia egena | Hydrophyllaceae
|
| PHMAL | Phacelia malvifolia Cham. var. loasifolia (Benth.) Brand | Phacelia malvifolia | Hydrophyllaceae
|
| PHMA2 | Phacelia malvifolia Cham. | stinging phacelia | Hydrophyllaceae
|
| PHMA10 | Phacelia mammillarensis Atwood | Nipple Beach phacelia | Hydrophyllaceae
|
| PHMA3 | Phacelia marcescens Eastw. ex J.F. Macbr. | persistentflower phacelia | Hydrophyllaceae
|
| PHMI | Phacelia minor (Harvey) Thellung ex F. Zimmerman | wild canterbury bells | Hydrophyllaceae
|
| PHMI9 | Phacelia minutiflora J. Voss | Phacelia crenulata var. minutiflora | Hydrophyllaceae
|
| PHMI7 | Phacelia minutissima Henderson | small phacelia | Hydrophyllaceae
|
| PHMOE | Phacelia mohavensis Gray var. exilis Gray | Phacelia exilis | Hydrophyllaceae
|
| PHMO | Phacelia mohavensis Gray | Mojave phacelia | Hydrophyllaceae
|
| PHMO2 | Phacelia mollis J.F. Macbr. | soft phacelia | Hydrophyllaceae
|
| PHMO11 | Phacelia monoensis Halse | Mono phacelia | Hydrophyllaceae
|
| PHMU | Phacelia mustelina Coville | weasel phacelia | Hydrophyllaceae
|
| PHMU2 | Phacelia mutabilis Greene | changeable phacelia | Hydrophyllaceae
|
| PHNA | Phacelia nashiana Jepson | Charlotte's phacelia | Hydrophyllaceae
|
| PHNE | Phacelia neglecta M.E. Jones | alkali phacelia | Hydrophyllaceae
|