| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ERANA | Eriodictyon angustifolium Nutt. var. amplifolium Brand | Eriodictyon angustifolium | Hydrophyllaceae
|
| ERAN2 | Eriodictyon angustifolium Nutt. | narrowleaf yerba santa | Hydrophyllaceae
|
| ERCA6 | Eriodictyon californicum (Hook. & Arn.) Torr. | California yerba santa | Hydrophyllaceae
|
| ERCA7 | Eriodictyon capitatum Eastw. | Lompoc yerba santa | Hydrophyllaceae
|
| ERCRC | Eriodictyon crassifolium Benth. var. crassifolium | thickleaf yerba santa | Hydrophyllaceae
|
| ERCRD | Eriodictyon crassifolium Benth. var. denudatum Abrams | Eriodictyon crassifolium var. nigrescens | Hydrophyllaceae
|
| ERCRN | Eriodictyon crassifolium Benth. var. nigrescens Brand | thickleaf yerba santa | Hydrophyllaceae
|
| ERCR2 | Eriodictyon crassifolium Benth. | thickleaf yerba santa | Hydrophyllaceae
|
| ERLA11 | Eriodictyon lanatum (Brand) Abrams | Eriodictyon trichocalyx var. lanatum | Hydrophyllaceae
|
| ERTOT | Eriodictyon tomentosum Benth. ssp. traskiae (Eastw.) Munz | Eriodictyon traskiae | Hydrophyllaceae
|
| ERTO | Eriodictyon tomentosum Benth. | woolly yerba santa | Hydrophyllaceae
|
| ERTRS | Eriodictyon traskiae Eastw. ssp. smithii Munz | Eriodictyon traskiae | Hydrophyllaceae
|
| ERTR6 | Eriodictyon traskiae Eastw. | Pacific yerba santa | Hydrophyllaceae
|
| ERTRL | Eriodictyon trichocalyx Heller ssp. lanatum (Brand) Munz | Eriodictyon trichocalyx var. lanatum | Hydrophyllaceae
|
| ERTRL2 | Eriodictyon trichocalyx Heller var. lanatum (Brand) Jepson | hairy yerba santa | Hydrophyllaceae
|
| ERTRT4 | Eriodictyon trichocalyx Heller var. trichocalyx | hairy yerba santa | Hydrophyllaceae
|
| ERTR7 | Eriodictyon trichocalyx Heller | hairy yerba santa | Hydrophyllaceae
|
| ERIOD | Eriodictyon Benth. | yerba santa | Hydrophyllaceae
|
| ERLE2 | Eriogonella leptoceras (Gray ex Benth.) Goodman | Dodecahema leptoceras | Polygonaceae
|
| ERME11 | Eriogonella membranacea (Benth.) Goodman | Chorizanthe membranacea | Polygonaceae
|
| ERSP11 | Eriogonella spinosa (S. Wats.) Goodman | Chorizanthe spinosa | Polygonaceae
|
| ERABA | Eriogonum abertianum Torr. var. abertianum | Abert's buckwheat | Polygonaceae
|
| ERABC | Eriogonum abertianum Torr. var. cyclosepalum (Greene) Fosberg | Abert's buckwheat | Polygonaceae
|
| ERABG | Eriogonum abertianum Torr. var. gillespiei Fosberg | Eriogonum abertianum var. abertianum | Polygonaceae
|
| ERABN | Eriogonum abertianum Torr. var. neomexicanum Gandog. | Eriogonum abertianum var. abertianum | Polygonaceae
|
| ERABV | Eriogonum abertianum Torr. var. villosum Fosberg | Eriogonum abertianum var. abertianum | Polygonaceae
|
| ERAB2 | Eriogonum abertianum Torr. | Abert's buckwheat | Polygonaceae
|
| ERAB5 | Eriogonum abramsii (McGregor) S. Stokes | Oxytheca parishii var. abramsii | Polygonaceae
|
| ERAC3 | Eriogonum acaule Nutt. | singlestem buckwheat | Polygonaceae
|
| ERAI2 | Eriogonum ainsliei Standl. | Eriogonum lonchophyllum var. fendlerianum | Polygonaceae
|
| ERALT2 | Eriogonum alatum Torr. ssp. triste (S. Wats.) S. Stokes | Eriogonum alatum var. alatum | Polygonaceae
|
| ERALA2 | Eriogonum alatum Torr. var. alatum | winged buckwheat | Polygonaceae
|
| ERALG | Eriogonum alatum Torr. var. glabriusculum Torr. | winged buckwheat | Polygonaceae
|
| ERALM2 | Eriogonum alatum Torr. var. mogollense S. Stokes ex M.E. Jones | winged buckwheat | Polygonaceae
|
| ERAL4 | Eriogonum alatum Torr. | winged buckwheat | Polygonaceae
|
| ERAL11 | Eriogonum aliquantum Reveal | Cimarron buckwheat | Polygonaceae
|
| ERAL5 | Eriogonum allenii S. Wats. | shalebarren buckwheat | Polygonaceae
|
| ERAL6 | Eriogonum alpinum Engelm. | Trinity buckwheat | Polygonaceae
|
| ERAM8 | Eriogonum ambiguum M.E. Jones | Eriogonum microthecum var. ambiguum | Polygonaceae
|
| ERAM6 | Eriogonum ammophilum Reveal | ibex buckwheat | Polygonaceae
|
| ERAM2 | Eriogonum ampullaceum J.T. Howell | Mono buckwheat | Polygonaceae
|
| ERAN5 | Eriogonum androsaceum Benth. | rockjasmine buckwheat | Polygonaceae
|
| ERAN8 | Eriogonum anemophilum Greene | west Humboldt buckwheat | Polygonaceae
|
| ERANM2 | Eriogonum angulosum Benth. ssp. maculatum (Heller) S. Stokes | Eriogonum maculatum | Polygonaceae
|
| ERANV | Eriogonum angulosum Benth. ssp. viridescens (Heller) S. Stokes | Eriogonum viridescens | Polygonaceae
|
| ERANM3 | Eriogonum angulosum Benth. var. maculatum (Heller) Jepson | Eriogonum maculatum | Polygonaceae
|
| ERAN3 | Eriogonum angulosum Benth. | anglestem buckwheat | Polygonaceae
|
| ERAN10 | Eriogonum angustifolium Nutt. | Eriogonum heracleoides var. angustifolium | Polygonaceae
|
| ERAN4 | Eriogonum annuum Nutt. | annual buckwheat | Polygonaceae
|
| ERAP3 | Eriogonum apachense Reveal | Eriogonum heermannii var. apachense | Polygonaceae
|
| ERAP2 | Eriogonum apiculatum S. Wats. | San Jacinto buckwheat | Polygonaceae
|
| ERAPA | Eriogonum apricum J.T. Howell var. apricum | Ione buckwheat | Polygonaceae
|
| ERAPP | Eriogonum apricum J.T. Howell var. prostratum Myatt | Irish Hill buckwheat | Polygonaceae
|
| ERAP4 | Eriogonum apricum J.T. Howell | Ione buckwheat | Polygonaceae
|
| ERAR6 | Eriogonum arborescens Greene | Santa Cruz Island buckwheat | Polygonaceae
|
| ERAR25 | Eriogonum arcuatum Greene | Eriogonum jamesii var. flavescens | Polygonaceae
|
| ERAR8 | Eriogonum aretioides Barneby | Red Canyon buckwheat | Polygonaceae
|
| ERAR9 | Eriogonum argillosum J.T. Howell | clay buckwheat | Polygonaceae
|
| ERAR18 | Eriogonum argophyllum Reveal | Sulphur Hot Springs buckwheat | Polygonaceae
|
| ERAR19 | Eriogonum arizonicum S. Stokes ex M.E. Jones | Arizona buckwheat | Polygonaceae
|
| ERAT2 | Eriogonum atrorubens Engelm. | red buckwheat | Polygonaceae
|
| ERAUG | Eriogonum aureum M.E. Jones var. glutinosum M.E. Jones | Eriogonum corymbosum var. aureum | Polygonaceae
|
| ERAU4 | Eriogonum aureum M.E. Jones | Eriogonum corymbosum var. aureum | Polygonaceae
|
| ERBAE | Eriogonum baileyi S. Wats. ssp. elegans (Greene) Munz | Eriogonum elegans | Polygonaceae
|
| ERBAB | Eriogonum baileyi S. Wats. var. baileyi | Bailey's buckwheat | Polygonaceae
|
| ERBAB2 | Eriogonum baileyi S. Wats. var. brachyanthum (Coville) Jepson | Eriogonum brachyanthum | Polygonaceae
|
| ERBAD | Eriogonum baileyi S. Wats. var. divaricatum (Gandog.) Reveal | Eriogonum baileyi var. praebens | Polygonaceae
|
| ERBAP | Eriogonum baileyi S. Wats. var. praebens (Gandog.) Reveal | Bailey's buckwheat | Polygonaceae
|
| ERBAT | Eriogonum baileyi S. Wats. var. tomentosum S. Wats., non Eriogonum tomentosum Michx. | Eriogonum palmerianum | Polygonaceae
|
| ERBA7 | Eriogonum baileyi S. Wats. | Bailey's buckwheat | Polygonaceae
|
| ERBA9 | Eriogonum bakeri Greene | Eriogonum jamesii var. flavescens | Polygonaceae
|
| ERBA8 | Eriogonum barbatum Elmer | Eriogonum deflexum var. baratum | Polygonaceae
|
| ERBAE2 | Eriogonum batemanii M.E. Jones var. eremicum (Reveal) Welsh | Eriogonum eremicum | Polygonaceae
|
| ERBAO | Eriogonum batemanii M.E. Jones var. ostlundii (M.E. Jones) Welsh | Eriogonum ostlundii | Polygonaceae
|
| ERBA5 | Eriogonum batemanii M.E. Jones | Bateman's buckwheat | Polygonaceae
|
| ERBE5 | Eriogonum beatleyae Reveal | Beatley's buckwheat | Polygonaceae
|
| ERBE9 | Eriogonum bellum S. Stokes | Eriogonum strictum ssp. proliferum var. proliferum | Polygonaceae
|
| ERBI | Eriogonum bicolor M.E. Jones | pretty buckwheat | Polygonaceae
|
| ERBI4 | Eriogonum bidentatum Jepson | Eriogonum viridescens | Polygonaceae
|
| ERBI2 | Eriogonum bifurcatum Reveal | Pahrump Valley buckwheat | Polygonaceae
|
| ERBL3 | Eriogonum �blissianum Mason | | Polygonaceae
|
| ERBR7 | Eriogonum brachyanthum Coville | shortflower buckwheat | Polygonaceae
|
| ERBR8 | Eriogonum brachypodum Torr. & Gray | Parry's buckwheat | Polygonaceae
|
| ERBR9 | Eriogonum brandegeei Rydb. | Brandegee's buckwheat | Polygonaceae
|
| ERBRB3 | Eriogonum breedlovei (J.T. Howell) Reveal var. breedlovei | Piute buckwheat | Polygonaceae
|
| ERBRS | Eriogonum breedlovei (J.T. Howell) Reveal var. shevockii J.T. Howell | Needle's buckwheat | Polygonaceae
|
| ERBR10 | Eriogonum breedlovei (J.T. Howell) Reveal | Piute buckwheat | Polygonaceae
|
| ERBRG | Eriogonum brevicaule Nutt. ssp. grangerense (M.E. Jones) S. Stokes | Eriogonum brevicaule var. brevicaule | Polygonaceae
|
| ERBRO | Eriogonum brevicaule Nutt. ssp. orendense (A. Nels.) S. Stokes | Eriogonum brevicaule var. micranthum | Polygonaceae
|
| ERBRB4 | Eriogonum brevicaule Nutt. var. brevicaule | shortstem buckwheat | Polygonaceae
|
| ERBRC2 | Eriogonum brevicaule Nutt. var. canum (S. Stokes) Dorn | Eriogonum lagopus | Polygonaceae
|
| ERBRC | Eriogonum brevicaule Nutt. var. cottamii (S. Stokes) Reveal | Cottam's buckwheat | Polygonaceae
|
| ERBRD | Eriogonum brevicaule Nutt. var. desertorum (Maguire) Welsh | Eriogonum desertorum | Polygonaceae
|
| ERBRE2 | Eriogonum brevicaule Nutt. var. ephedroides (Reveal) Welsh | Eriogonum ephedroides | Polygonaceae
|
| ERBRL | Eriogonum brevicaule Nutt. var. laxifolium (Torr. & Gray) Reveal | shortstem buckwheat | Polygonaceae
|
| ERBRL2 | Eriogonum brevicaule Nutt. var. loganum (A. Nels.) Welsh | Eriogonum loganum | Polygonaceae
|
| ERBRM | Eriogonum brevicaule Nutt. var. micranthum (Nutt.) Reveal | shortstem buckwheat | Polygonaceae
|
| ERBRN | Eriogonum brevicaule Nutt. var. nanum (Reveal) Welsh | Eriogonum brevicaule var. laxifolium | Polygonaceae
|
| ERBRP2 | Eriogonum brevicaule Nutt. var. promiscuum Welsh | Eriogonum brevicaule var. laxifolium | Polygonaceae
|
| ERBRV | Eriogonum brevicaule Nutt. var. viridulum (Reveal) Welsh | Eriogonum viridulum | Polygonaceae
|
| ERBRW | Eriogonum brevicaule Nutt. var. wasatchense (M.E. Jones) Reveal | Eriogonum brevicaule var. brevicaule | Polygonaceae
|