| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ERLOG | Eriogonum longifolium Nutt. var. gnaphalifolium Gandog. | longleaf buckwheat | Polygonaceae
|
| ERLOH | Eriogonum longifolium Nutt. var. harperi (Goodman) Reveal | Harper's buckwheat | Polygonaceae
|
| ERLOL5 | Eriogonum longifolium Nutt. var. lindheimeri Gandog. | Eriogonum longifolium var. longifolium | Polygonaceae
|
| ERLOL4 | Eriogonum longifolium Nutt. var. longifolium | longleaf buckwheat | Polygonaceae
|
| ERLOP | Eriogonum longifolium Nutt. var. plantagineum Engelm. & Gray | Eriogonum longifolium var. longifolium | Polygonaceae
|
| ERLO5 | Eriogonum longifolium Nutt. | longleaf buckwheat | Polygonaceae
|
| ERLUC | Eriogonum luteolum Greene var. caninum (Greene) Reveal | Tiburon buckwheat | Polygonaceae
|
| ERLUL | Eriogonum luteolum Greene var. luteolum | goldencarpet buckwheat | Polygonaceae
|
| ERLUP | Eriogonum luteolum Greene var. pedunculatum (Stokes) Reveal | goldencarpet buckwheat | Polygonaceae
|
| ERLUS | Eriogonum luteolum Greene var. saltuarium Reveal | goldencarpet buckwheat | Polygonaceae
|
| ERLU5 | Eriogonum luteolum Greene | goldencarpet buckwheat | Polygonaceae
|
| ERMA2 | Eriogonum maculatum Heller | spotted buckwheat | Polygonaceae
|
| ERMA3 | Eriogonum mancum Rydb. | imperfect buckwheat | Polygonaceae
|
| ERMAI | Eriogonum marifolium Torr. & Gray var. incanum (Torr. & Gray) M.E. Jones | Eriogonum incanum | Polygonaceae
|
| ERMA4 | Eriogonum marifolium Torr. & Gray | marumleaf buckwheat | Polygonaceae
|
| ERMEP | Eriogonum mearnsii Parry var. pulchrum (Eastw.) Kearney & Peebles | Eriogonum ericifolium var. pulchrum | Polygonaceae
|
| ERME9 | Eriogonum mearnsii Parry | Eriogonum ericifolium var. ericifolium | Polygonaceae
|
| ERME6 | Eriogonum meledonum Reveal | bridle buckwheat | Polygonaceae
|
| ERME10 | Eriogonum mensicola S. Stokes | crescent buckwheat | Polygonaceae
|
| ERMIA5 | Eriogonum microthecum Nutt. ssp. ambiguum (M.E. Jones) Munz | Eriogonum microthecum var. ambiguum | Polygonaceae
|
| ERMIC5 | Eriogonum microthecum Nutt. ssp. confertiflorum (Benth.) S. Stokes | Eriogonum microthecum var. laxiflorum | Polygonaceae
|
| ERMII2 | Eriogonum microthecum Nutt. ssp. intermedium S. Stokes | Eriogonum microthecum var. simpsonii | Polygonaceae
|
| ERMIL5 | Eriogonum microthecum Nutt. ssp. laxiflorum (Hook.) S. Stokes | Eriogonum microthecum var. laxiflorum | Polygonaceae
|
| ERMIA | Eriogonum microthecum Nutt. var. alpinum Reveal | alpine slender buckwheat | Polygonaceae
|
| ERMIA2 | Eriogonum microthecum Nutt. var. ambiguum (M.E. Jones) Reveal | slender buckwheat | Polygonaceae
|
| ERMIC4 | Eriogonum microthecum Nutt. var. confertiflorum (Benth.) Torr. & Gray | Eriogonum microthecum var. laxiflorum | Polygonaceae
|
| ERMIC | Eriogonum microthecum Nutt. var. corymbosoides Reveal | San Bernardino buckwheat | Polygonaceae
|
| ERMIC3 | Eriogonum microthecum Nutt. var. crispum (L.O. Williams) S. Stokes | Eriogonum corymbosum var. aureum | Polygonaceae
|
| ERMIE | Eriogonum microthecum Nutt. var. effusum (Nutt.) Torr. & Gray | Eriogonum effusum var. effusum | Polygonaceae
|
| ERMIE2 | Eriogonum microthecum Nutt. var. expansum S. Stokes | Eriogonum microthecum var. ambiguum | Polygonaceae
|
| ERMIF | Eriogonum microthecum Nutt. var. foliosum (Torr. & Gray) Reveal | Eriogonum microthecum var. simpsonii | Polygonaceae
|
| ERMIF3 | Eriogonum microthecum Nutt. var. friscanum (M.E. Jones) S. Stokes | Eriogonum microthecum var. simpsonii | Polygonaceae
|
| ERMII | Eriogonum microthecum Nutt. var. idahoense (Rydb.) S. Stokes | Eriogonum microthecum var. microthecum | Polygonaceae
|
| ERMIJ | Eriogonum microthecum Nutt. var. johnstonii Reveal | Johnston's buckwheat | Polygonaceae
|
| ERMIL | Eriogonum microthecum Nutt. var. lapidicola Reveal | slender buckwheat | Polygonaceae
|
| ERMIL2 | Eriogonum microthecum Nutt. var. laxiflorum Hook. | slender buckwheat | Polygonaceae
|
| ERMIM3 | Eriogonum microthecum Nutt. var. macdougalii (Gandog.) S. Stokes | Eriogonum microthecum var. simpsonii | Polygonaceae
|
| ERMIM2 | Eriogonum microthecum Nutt. var. microthecum | slender buckwheat | Polygonaceae
|
| ERMIP | Eriogonum microthecum Nutt. var. panamintense S. Stokes | Panamint buckwheat | Polygonaceae
|
| ERMIS2 | Eriogonum microthecum Nutt. var. simpsonii (Benth.) Reveal | Simpson's buckwheat | Polygonaceae
|
| ERMI4 | Eriogonum microthecum Nutt. | slender buckwheat | Polygonaceae
|
| ERMOA | Eriogonum mohavense S. Wats. ssp. ampullaceum (J.T. Howell) S. Stokes | Eriogonum ampullaceum | Polygonaceae
|
| ERMO3 | Eriogonum mohavense S. Wats. | Western Mojave buckwheat | Polygonaceae
|
| ERMOD | Eriogonum molestum S. Wats. var. davidsonii (Greene) Jepson | Eriogonum davidsonii | Polygonaceae
|
| ERMO4 | Eriogonum molestum S. Wats. | pineland buckwheat | Polygonaceae
|
| ERMO11 | Eriogonum monticola S. Stokes | Eriogonum latens | Polygonaceae
|
| ERMO9 | Eriogonum mortonianum Reveal | Fredonia buckwheat | Polygonaceae
|
| ERMUC | Eriogonum multiceps Nees ssp. canum S. Stokes | Eriogonum lagopus | Polygonaceae
|
| ERMU9 | Eriogonum multiceps Nees | Eriogonum pauciflorum var. pauciflorum | Polygonaceae
|
| ERMU4 | Eriogonum multiflorum Benth. | heartsepal buckwheat | Polygonaceae
|
| ERNA3 | Eriogonum nanum Reveal | Eriogonum brevicaule var. laxifolium | Polygonaceae
|
| ERNA4 | Eriogonum natum Reveal | Son's buckwheat | Polygonaceae
|
| ERNE5 | Eriogonum nealleyi Coult. | Irion County buckwheat | Polygonaceae
|
| ERNE6 | Eriogonum �nebraskense Rydb. (pro sp.) | | Polygonaceae
|
| ERNE8 | Eriogonum nervulosum (S. Stokes) Reveal | Snow Mountain buckwheat | Polygonaceae
|
| ERNI4 | Eriogonum nidularium Coville | birdnest buckwheat | Polygonaceae
|
| ERNI5 | Eriogonum nivale Canby | Eriogonum ovalifolium var. nivale | Polygonaceae
|
| ERNID | Eriogonum niveum Dougl. ex Benth. ssp. decumbens (Benth.) S. Stokes | Eriogonum niveum | Polygonaceae
|
| ERNID3 | Eriogonum niveum Dougl. ex Benth. var. decumbens (Benth.) Torr. & Gray | Eriogonum niveum | Polygonaceae
|
| ERNID2 | Eriogonum niveum Dougl. ex Benth. var. dichotomum (Dougl. ex Benth.) M.E. Jones | Eriogonum niveum | Polygonaceae
|
| ERNI2 | Eriogonum niveum Dougl. ex Benth. | snow buckwheat | Polygonaceae
|
| ERNOM | Eriogonum nodosum Small ssp. monoense S. Stokes | Eriogonum nummulare | Polygonaceae
|
| ERNOK | Eriogonum nodosum Small var. kearneyi (Tidestrom) S. Stokes | Eriogonum nummulare | Polygonaceae
|
| ERNO4 | Eriogonum nodosum Small | Eriogonum wrightii var. nodosum | Polygonaceae
|
| ERNO2 | Eriogonum nortonii Greene | Pinnacles buckwheat | Polygonaceae
|
| ERNO3 | Eriogonum novonudum M.E. Peck | false naked buckwheat | Polygonaceae
|
| ERNUA3 | Eriogonum nudicaule (Torr.) Small ssp. angustum (M.E. Jones) S. Stokes | Eriogonum brevicaule var. laxifolium | Polygonaceae
|
| ERNUG2 | Eriogonum nudicaule (Torr.) Small ssp. garrettii S. Stokes | Eriogonum brevicaule var. brevicaule | Polygonaceae
|
| ERNUO2 | Eriogonum nudicaule (Torr.) Small ssp. ochroflorum S. Stokes | Eriogonum spathulatum | Polygonaceae
|
| ERNUP5 | Eriogonum nudicaule (Torr.) Small ssp. parleyense S. Stokes | Eriogonum brevicaule var. brevicaule | Polygonaceae
|
| ERNUP6 | Eriogonum nudicaule (Torr.) Small ssp. pumilum (S. Stokes) S. Stokes | Eriogonum brevicaule var. laxifolium | Polygonaceae
|
| ERNU9 | Eriogonum nudicaule (Torr.) Small | Eriogonum lonchophyllum var. lonchophyllum | Polygonaceae
|
| ERNUP7 | Eriogonum nudum Dougl. ex Benth. ssp. pauciflorum (S. Wats.) Munz | Eriogonum nudum var. pauciflorum | Polygonaceae
|
| ERNUS3 | Eriogonum nudum Dougl. ex Benth. ssp. saxicola (Heller) Munz | Eriogonum nudum var. westonii | Polygonaceae
|
| ERNUA | Eriogonum nudum Dougl. ex Benth. var. auriculatum (Benth.) Tracy ex Jepson | naked buckwheat | Polygonaceae
|
| ERNUD | Eriogonum nudum Dougl. ex Benth. var. decurrens (S. Stokes) M.L. Bowerman | BenLomond buckwheat | Polygonaceae
|
| ERNUD2 | Eriogonum nudum Dougl. ex Benth. var. deductum (Greene) Jepson | naked buckwheat | Polygonaceae
|
| ERNUG3 | Eriogonum nudum Dougl. ex Benth. var. gramineum (S. Stokes) Reveal | Eriogonum nudum var. westonii | Polygonaceae
|
| ERNUI | Eriogonum nudum Dougl. ex Benth. var. indictum (Jepson) Reveal | protruding buckwheat | Polygonaceae
|
| ERNUM | Eriogonum nudum Dougl. ex Benth. var. murinum Reveal | mouse buckwheat | Polygonaceae
|
| ERNUN | Eriogonum nudum Dougl. ex Benth. var. nudum | naked buckwheat | Polygonaceae
|
| ERNUO | Eriogonum nudum Dougl. ex Benth. var. oblongifolium S. Wats. | naked buckwheat | Polygonaceae
|
| ERNUP | Eriogonum nudum Dougl. ex Benth. var. paralinum Reveal | Del Norte buckwheat | Polygonaceae
|
| ERNUP2 | Eriogonum nudum Dougl. ex Benth. var. pauciflorum S. Wats. | naked buckwheat | Polygonaceae
|
| ERNUP4 | Eriogonum nudum Dougl. ex Benth. var. pubiflorum Benth. | naked buckwheat | Polygonaceae
|
| ERNUR | Eriogonum nudum Dougl. ex Benth. var. regirivum Reveal & J. Stebbins | Kings River buckwheat | Polygonaceae
|
| ERNUS | Eriogonum nudum Dougl. ex Benth. var. saxicola (Heller) Reveal | Eriogonum nudum var. westonii | Polygonaceae
|
| ERNUS2 | Eriogonum nudum Dougl. ex Benth. var. scapigerum (Eastw.) Jepson | naked buckwheat | Polygonaceae
|
| ERNUW | Eriogonum nudum Dougl. ex Benth. var. westonii (S. Stokes) J.T. Howell | Weston's buckwheat | Polygonaceae
|
| ERNU3 | Eriogonum nudum Dougl. ex Benth. | naked buckwheat | Polygonaceae
|
| ERNUA2 | Eriogonum nummulare M.E. Jones var. ammophilum (Reveal) Welsh | Eriogonum ammophilum | Polygonaceae
|
| ERNU4 | Eriogonum nummulare M.E. Jones | money buckwheat | Polygonaceae
|
| ERNUB | Eriogonum nutans Torr. & Gray var. brevipedicellatum S. Stokes | Eriogonum nutans var. nutans | Polygonaceae
|
| ERNUG | Eriogonum nutans Torr. & Gray var. glabratum Reveal | Dugway buckwheat | Polygonaceae
|
| ERNUN2 | Eriogonum nutans Torr. & Gray var. nutans | Dugway buckwheat | Polygonaceae
|
| ERNU5 | Eriogonum nutans Torr. & Gray | Dugway buckwheat | Polygonaceae
|
| EROCA3 | Eriogonum ochrocephalum S. Wats. ssp. agnellum (Jepson) S. Stokes | Eriogonum rosense | Polygonaceae
|
| EROCA2 | Eriogonum ochrocephalum S. Wats. ssp. anemophilum (Greene) S. Stokes | Eriogonum anemophilum | Polygonaceae
|
| EROCC2 | Eriogonum ochrocephalum S. Wats. ssp. calcareum S. Stokes | Eriogonum ochrocephalum var. calcareum | Polygonaceae
|
| EROCA | Eriogonum ochrocephalum S. Wats. var. alexandrae Reveal | Alexander's buckwheat | Polygonaceae
|
| EROCB | Eriogonum ochrocephalum S. Wats. var. breedlovei J.T. Howell | Eriogonum breedlovei var. breedlovei | Polygonaceae
|