| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ERHEA | Eriogonum heermannii Dur. & Hilg. var. argense (M.E. Jones) Munz | Heermann's buckwheat | Polygonaceae
|
| ERHEC | Eriogonum heermannii Dur. & Hilg. var. clokeyi Reveal | Clokey's buckwheat | Polygonaceae
|
| ERHEF | Eriogonum heermannii Dur. & Hilg. var. floccosum Munz | Clark Mountain buckwheat | Polygonaceae
|
| ERHEH2 | Eriogonum heermannii Dur. & Hilg. var. heermannii | Heermann's buckwheat | Polygonaceae
|
| ERHEH | Eriogonum heermannii Dur. & Hilg. var. humilius (S. Stokes) Reveal | Heermann's buckwheat | Polygonaceae
|
| ERHEO | Eriogonum heermannii Dur. & Hilg. var. occidentale S. Stokes | western Heermann's buckwheat | Polygonaceae
|
| ERHES | Eriogonum heermannii Dur. & Hilg. var. subracemosum (S. Stokes) Reveal | Heermann's buckwheat | Polygonaceae
|
| ERHES5 | Eriogonum heermannii Dur. & Hilg. var. subspinosum Reveal | Heermann's buckwheat | Polygonaceae
|
| ERHES2 | Eriogonum heermannii Dur. & Hilg. var. sulcatum (S. Wats.) Munz & Reveal | Heermann's buckwheat | Polygonaceae
|
| ERHE | Eriogonum heermannii Dur. & Hilg. | Heermann's buckwheat | Polygonaceae
|
| ERHE8 | Eriogonum hemipterum (Torr.) S. Stokes | Chisos Mountain buckwheat | Polygonaceae
|
| ERHEA2 | Eriogonum heracleoides Nutt. var. angustifolium (Nutt.) Torr. & Gray | parsnipflower buckwheat | Polygonaceae
|
| ERHEH3 | Eriogonum heracleoides Nutt. var. heracleoides | parsnipflower buckwheat | Polygonaceae
|
| ERHEL | Eriogonum heracleoides Nutt. var. leucophaeum Reveal | parsnipflower buckwheat | Polygonaceae
|
| ERHEM | Eriogonum heracleoides Nutt. var. minus Benth. | Eriogonum heracleoides var. heracleoides | Polygonaceae
|
| ERHES4 | Eriogonum heracleoides Nutt. var. subalpinum (Greene) S. Stokes | Eriogonum umbellatum var. majus | Polygonaceae
|
| ERHE2 | Eriogonum heracleoides Nutt. | parsnipflower buckwheat | Polygonaceae
|
| ERHI3 | Eriogonum hieraciifolium Benth. | hawkweed buckwheat | Polygonaceae
|
| ERHI7 | Eriogonum hirtellum J.T. Howell & Bacig. | Klamath Mountain buckwheat | Polygonaceae
|
| ERHI4 | Eriogonum hirtiflorum Gray ex S. Wats. | hairyflower buckwheat | Polygonaceae
|
| ERHOR2 | Eriogonum hoffmannii S. Stokes ssp. robustius (S. Stokes) Munz | Eriogonum hoffmannii var. robustius | Polygonaceae
|
| ERHOH | Eriogonum hoffmannii S. Stokes var. hoffmannii | Hoffmann's buckwheat | Polygonaceae
|
| ERHOR | Eriogonum hoffmannii S. Stokes var. robustius S. Stokes | robust Hoffmann's buckwheat | Polygonaceae
|
| ERHO4 | Eriogonum hoffmannii S. Stokes | Hoffmann's buckwheat | Polygonaceae
|
| ERHO5 | Eriogonum holmgrenii Reveal | Snake Range buckwheat | Polygonaceae
|
| ERHO6 | Eriogonum hookeri S. Wats. | Hooker's buckwheat | Polygonaceae
|
| ERHO12 | Eriogonum howellianum Reveal | Howell's buckwheat | Polygonaceae
|
| ERHOS | Eriogonum howellii S. Stokes var. subracemosum S. Stokes | Eriogonum heermannii var. subracemosum | Polygonaceae
|
| ERHO15 | Eriogonum howellii S. Stokes | Eriogonum heermannii var. argense | Polygonaceae
|
| ERHU2 | Eriogonum humivagans Reveal | Eriogonum lonchophyllum var. lonchophyllum | Polygonaceae
|
| ERHY3 | Eriogonum hylophilum Reveal & Brotherson | Gate Canyon buckwheat | Polygonaceae
|
| ERIN9 | Eriogonum incanum Torr. & Gray | frosted buckwheat | Polygonaceae
|
| ERINH2 | Eriogonum inerme (S. Wats.) Jepson ssp. hispidulum (Goodman) Munz | Eriogonum inerme var. hispidulum | Polygonaceae
|
| ERINH | Eriogonum inerme (S. Wats.) Jepson var. hispidulum Goodman | unarmed buckwheat | Polygonaceae
|
| ERINI3 | Eriogonum inerme (S. Wats.) Jepson var. inerme | unarmed buckwheat | Polygonaceae
|
| ERIN3 | Eriogonum inerme (S. Wats.) Jepson | unarmed buckwheat | Polygonaceae
|
| ERINC2 | Eriogonum inflatum Torr. & Fr�m. var. contiguum Reveal | Eriogonum contiguum | Polygonaceae
|
| ERIND | Eriogonum inflatum Torr. & Fr�m. var. deflatum I.M. Johnston | desert trumpet | Polygonaceae
|
| ERINF | Eriogonum inflatum Torr. & Fr�m. var. fusiforme (Small) Reveal | Eriogonum fusiforme | Polygonaceae
|
| ERINI4 | Eriogonum inflatum Torr. & Fr�m. var. inflatum | desert trumpet | Polygonaceae
|
| ERIN4 | Eriogonum inflatum Torr. & Fr�m. | desert trumpet | Polygonaceae
|
| ERIN10 | Eriogonum insigne S. Wats. | ladder buckwheat | Polygonaceae
|
| ERIN11 | Eriogonum intermontanum Reveal | Eriogonum lonchophyllum var. lonchophyllum | Polygonaceae
|
| ERIN5 | Eriogonum intrafractum Coville & Morton | napkinring | Polygonaceae
|
| ERJAF | Eriogonum jamesii Benth. var. flavescens S. Wats. | James' buckwheat | Polygonaceae
|
| ERJAH | Eriogonum jamesii Benth. var. higginsii Welsh | Eriogonum jamesii var. flavescens | Polygonaceae
|
| ERJAJ | Eriogonum jamesii Benth. var. jamesii | James' buckwheat | Polygonaceae
|
| ERJAR | Eriogonum jamesii Benth. var. rupicola Reveal | Eriogonum jamesii var. flavescens | Polygonaceae
|
| ERJAS | Eriogonum jamesii Benth. var. simplex Gandog. | James' buckwheat | Polygonaceae
|
| ERJAU | Eriogonum jamesii Benth. var. undulatum (Benth.) S. Stokes ex M.E. Jones | James' buckwheat | Polygonaceae
|
| ERJAW | Eriogonum jamesii Benth. var. wootonii Reveal | James' buckwheat | Polygonaceae
|
| ERJAX | Eriogonum jamesii Benth. var. xanthum (Small) Reveal | James' buckwheat | Polygonaceae
|
| ERJA | Eriogonum jamesii Benth. | James' buckwheat | Polygonaceae
|
| ERJO | Eriogonum jonesii S. Wats. | Jones' buckwheat | Polygonaceae
|
| ERKEM2 | Eriogonum kearneyi Tidestrom ssp. monoense (S. Stokes) Munz ex Reveal | Eriogonum nummulare | Polygonaceae
|
| ERKEM | Eriogonum kearneyi Tidestrom var. monoense (S. Stokes) Reveal | Eriogonum nummulare | Polygonaceae
|
| ERKE3 | Eriogonum kearneyi Tidestrom | Eriogonum nummulare | Polygonaceae
|
| ERKE | Eriogonum kelloggii Gray | Red Mountain buckwheat | Polygonaceae
|
| ERKEA3 | Eriogonum kennedyi Porter ex S. Wats. ssp. alpigenum (Munz & Johnston) Munz | Eriogonum kennedyi var. alpigenum | Polygonaceae
|
| ERKEA4 | Eriogonum kennedyi Porter ex S. Wats. ssp. austromontanum (Munz & Johnston) S. Stokes | Eriogonum kennedyi var. austromontanum | Polygonaceae
|
| ERKEG | Eriogonum kennedyi Porter ex S. Wats. ssp. gracilipes (S. Wats.) S. Stokes | Eriogonum gracilipes | Polygonaceae
|
| ERKEP3 | Eriogonum kennedyi Porter ex S. Wats. ssp. purpusii (Brandeg.) Munz | Eriogonum kennedyi var. purpusii | Polygonaceae
|
| ERKEA | Eriogonum kennedyi Porter ex S. Wats. var. alpigenum Munz & Johnston | southern alpine buckwheat | Polygonaceae
|
| ERKEA2 | Eriogonum kennedyi Porter ex S. Wats. var. austromontanum Munz & Johnston | southern mountain buckwheat | Polygonaceae
|
| ERKEK | Eriogonum kennedyi Porter ex S. Wats. var. kennedyi | Kennedy's buckwheat | Polygonaceae
|
| ERKEP | Eriogonum kennedyi Porter ex S. Wats. var. pinicola Reveal | Kern buckwheat | Polygonaceae
|
| ERKEP2 | Eriogonum kennedyi Porter ex S. Wats. var. purpusii (Brandeg.) Reveal | Purpus' buckwheat | Polygonaceae
|
| ERKE2 | Eriogonum kennedyi Porter ex S. Wats. | Kennedy's buckwheat | Polygonaceae
|
| ERKI | Eriogonum kingii Torr. & Gray | Ruby Mountain buckwheat | Polygonaceae
|
| ERLA3 | Eriogonum lachnogynum Torr. ex Benth. | woollycup buckwheat | Polygonaceae
|
| ERLA9 | Eriogonum lagopus Rydb. | parasol buckwheat | Polygonaceae
|
| ERLA10 | Eriogonum lancifolium Reveal & Brotherson | lanceleaf buckwheat | Polygonaceae
|
| ERLA4 | Eriogonum latens Jepson | Inyo buckwheat | Polygonaceae
|
| ERLAA4 | Eriogonum latifolium Sm. ssp. auriculatum (Benth.) S. Stokes | Eriogonum nudum var. auriculatum | Polygonaceae
|
| ERLAG2 | Eriogonum latifolium Sm. ssp. grande (Greene) S. Stokes | Eriogonum grande var. grande | Polygonaceae
|
| ERLAN | Eriogonum latifolium Sm. ssp. nudum (Dougl. ex Benth.) S. Stokes | Eriogonum nudum var. nudum | Polygonaceae
|
| ERLAP | Eriogonum latifolium Sm. ssp. pauciflorum (S. Wats.) S. Stokes | Eriogonum nudum var. pauciflorum | Polygonaceae
|
| ERLAS2 | Eriogonum latifolium Sm. ssp. saxicola (Heller) S. Stokes | Eriogonum nudum var. westonii | Polygonaceae
|
| ERLAS | Eriogonum latifolium Sm. ssp. sulphureum (Greene) S. Stokes | Eriogonum nudum var. oblongifolium | Polygonaceae
|
| ERLAD3 | Eriogonum latifolium Sm. var. deductum (Greene) S. Stokes | Eriogonum nudum var. deductum | Polygonaceae
|
| ERLAI3 | Eriogonum latifolium Sm. var. indictum (Jepson) S. Stokes | Eriogonum nudum var. indictum | Polygonaceae
|
| ERLAR | Eriogonum latifolium Sm. var. rubescens (Greene) S. Stokes | Eriogonum grande var. rubescens | Polygonaceae
|
| ERLAS3 | Eriogonum latifolium Sm. var. scapigerum (Eastw.) S. Stokes | Eriogonum nudum var. scapigerum | Polygonaceae
|
| ERLA5 | Eriogonum latifolium Sm. | seaside buckwheat | Polygonaceae
|
| ERLE8 | Eriogonum lemmonii S. Wats. | volcanic buckwheat | Polygonaceae
|
| ERLEL | Eriogonum leptocladon Torr. & Gray var. leptocladon | sand buckwheat | Polygonaceae
|
| ERLEP | Eriogonum leptocladon Torr. & Gray var. papiliunculi Reveal | sand buckwheat | Polygonaceae
|
| ERLER | Eriogonum leptocladon Torr. & Gray var. ramosissimum (Eastw.) Reveal | sand buckwheat | Polygonaceae
|
| ERLE9 | Eriogonum leptocladon Torr. & Gray | sand buckwheat | Polygonaceae
|
| ERLE10 | Eriogonum leptophyllum (Torr. & Gray) Woot. & Standl. | slenderleaf buckwheat | Polygonaceae
|
| ERLE16 | Eriogonum leucophyllum Woot. & Standl. | Eriogonum havardii | Polygonaceae
|
| ERLE13 | Eriogonum lewisii Reveal | Lewis' buckwheat | Polygonaceae
|
| ERLI4 | Eriogonum libertini Reveal | Dubakella Mountain buckwheat | Polygonaceae
|
| ERLOR | Eriogonum lobbii Torr. & Gray var. robustum (Greene) M.E. Jones | Eriogonum robustum | Polygonaceae
|
| ERLO2 | Eriogonum lobbii Torr. & Gray | Lobb's buckwheat | Polygonaceae
|
| ERLO3 | Eriogonum loganum A. Nels. | Cache Valley buckwheat | Polygonaceae
|
| ERLOF | Eriogonum lonchophyllum Torr. & Gray var. fendlerianum (Benth.) Reveal | spearleaf buckwheat | Polygonaceae
|
| ERLOI | Eriogonum lonchophyllum Torr. & Gray var. intermontanum (Reveal) Reveal | Eriogonum lonchophyllum var. lonchophyllum | Polygonaceae
|
| ERLOL3 | Eriogonum lonchophyllum Torr. & Gray var. lonchophyllum | spearleaf buckwheat | Polygonaceae
|
| ERLON | Eriogonum lonchophyllum Torr. & Gray var. nudicaule (Torr.) Reveal | Eriogonum lonchophyllum var. lonchophyllum | Polygonaceae
|
| ERLOS | Eriogonum lonchophyllum Torr. & Gray var. saurinum (Reveal) Welsh | spearleaf buckwheat | Polygonaceae
|