| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| EROCG | Eriogonum ochrocephalum S. Wats. var. gracilipes (S. Wats.) J.T. Howell | Eriogonum gracilipes | Polygonaceae
|
| EROCO2 | Eriogonum ochrocephalum S. Wats. var. ochrocephalum | whitewoolly buckwheat | Polygonaceae
|
| EROCS | Eriogonum ochrocephalum S. Wats. var. sceptrum Reveal | whitewoolly buckwheat | Polygonaceae
|
| EROC2 | Eriogonum ochrocephalum S. Wats. | whitewoolly buckwheat | Polygonaceae
|
| EROC4 | Eriogonum ochroleucum Small ex Rydb. | Eriogonum ovalifolium var. ochroleucum | Polygonaceae
|
| EROR3 | Eriogonum ordii S. Wats. | Fort Mojave buckwheat | Polygonaceae
|
| EROS | Eriogonum ostlundii M.E. Jones | Elsinore buckwheat | Polygonaceae
|
| EROVC3 | Eriogonum ovalifolium Nutt. ssp. chrysops (Rydb.) S. Stokes ex M.E. Peck | Eriogonum chrysops | Polygonaceae
|
| EROVE2 | Eriogonum ovalifolium Nutt. ssp. eximium (Tidestrom) S. Stokes | Eriogonum ovalifolium var. eximium | Polygonaceae
|
| EROVF | Eriogonum ovalifolium Nutt. ssp. flavissimum (Gandog.) S. Stokes | Eriogonum strictum ssp. proliferum var. anserinum | Polygonaceae
|
| EROVO6 | Eriogonum ovalifolium Nutt. ssp. ochroleucum (Small ex Rydb.) S. Stokes | Eriogonum ovalifolium var. ochroleucum | Polygonaceae
|
| EROVV2 | Eriogonum ovalifolium Nutt. ssp. vineum (Small) S. Stokes | Eriogonum ovalifolium var. vineum | Polygonaceae
|
| EROVC | Eriogonum ovalifolium Nutt. var. caelestinum Reveal | cushion buckwheat | Polygonaceae
|
| EROVC2 | Eriogonum ovalifolium Nutt. var. celsum A. Nels. | Eriogonum ovalifolium var. purpureum | Polygonaceae
|
| EROVD | Eriogonum ovalifolium Nutt. var. depressum Blank. | cushion buckwheat | Polygonaceae
|
| EROVE | Eriogonum ovalifolium Nutt. var. eximium (Tidestrom) J.T. Howell | brownmargin buckwheat | Polygonaceae
|
| EROVM | Eriogonum ovalifolium Nutt. var. macropodum (Gandog.) Reveal | Eriogonum ovalifolium var. ochroleucum | Polygonaceae
|
| EROVM2 | Eriogonum ovalifolium Nutt. var. multiscapum Gandog. | Eriogonum ovalifolium var. purpureum | Polygonaceae
|
| EROVN2 | Eriogonum ovalifolium Nutt. var. nevadense Gandog. | Eriogonum ovalifolium var. ovalifolium | Polygonaceae
|
| EROVN | Eriogonum ovalifolium Nutt. var. nivale (Canby) M.E. Jones | cushion buckwheat | Polygonaceae
|
| EROVO4 | Eriogonum ovalifolium Nutt. var. ochroleucum (Small ex Rydb.) M.E. Peck | cushion buckwheat | Polygonaceae
|
| EROVO3 | Eriogonum ovalifolium Nutt. var. orthocaulon (Small) C.L. Hitchc. | Eriogonum ovalifolium var. purpureum | Polygonaceae
|
| EROVO5 | Eriogonum ovalifolium Nutt. var. ovalifolium | cushion buckwheat | Polygonaceae
|
| EROVP | Eriogonum ovalifolium Nutt. var. pansum Reveal | cushion buckwheat | Polygonaceae
|
| EROVP2 | Eriogonum ovalifolium Nutt. var. purpureum (Nutt.) Dur. | cushion buckwheat | Polygonaceae
|
| EROVV | Eriogonum ovalifolium Nutt. var. vineum (Small) Jepson | Cushenbury buckwheat | Polygonaceae
|
| EROVW | Eriogonum ovalifolium Nutt. var. williamsiae Reveal | Williams' buckwheat | Polygonaceae
|
| EROV | Eriogonum ovalifolium Nutt. | cushion buckwheat | Polygonaceae
|
| ERPA11 | Eriogonum palmerianum Reveal | Palmer's buckwheat | Polygonaceae
|
| ERPAM2 | Eriogonum panamintense Morton ssp. mensicola (S. Stokes) Munz | Eriogonum mensicola | Polygonaceae
|
| ERPAM | Eriogonum panamintense Morton var. mensicola (S. Stokes) Reveal | Eriogonum mensicola | Polygonaceae
|
| ERPA12 | Eriogonum panamintense Morton | Panamint Mountain buckwheat | Polygonaceae
|
| ERPAA | Eriogonum panguicense (M.E. Jones) Reveal var. alpestre (S. Stokes) Reveal | Panguitch buckwheat | Polygonaceae
|
| ERPAP5 | Eriogonum panguicense (M.E. Jones) Reveal var. panguicense | Panguitch buckwheat | Polygonaceae
|
| ERPA13 | Eriogonum panguicense (M.E. Jones) Reveal | Panguitch buckwheat | Polygonaceae
|
| ERPA23 | Eriogonum pannosum Woot. & Standl. | Eriogonum hieraciifolium | Polygonaceae
|
| ERPA6 | Eriogonum parishii S. Wats. | mountainmist | Polygonaceae
|
| ERPA20 | Eriogonum parryi Gray | Eriogonum brachypodum | Polygonaceae
|
| ERPAL | Eriogonum parvifolium Sm. ssp. lucidum J.T. Howell ex S. Stokes | Eriogonum parvifolium | Polygonaceae
|
| ERPAP7 | Eriogonum parvifolium Sm. ssp. paynei C.B. Wolf ex Munz | Eriogonum parvifolium | Polygonaceae
|
| ERPAL2 | Eriogonum parvifolium Sm. var. lucidum (J.T. Howell ex S. Stokes) Reveal | Eriogonum parvifolium | Polygonaceae
|
| ERPAP8 | Eriogonum parvifolium Sm. var. paynei (C.B. Wolf ex Munz) Reveal | Eriogonum parvifolium | Polygonaceae
|
| ERPA8 | Eriogonum parvifolium Sm. | seacliff buckwheat | Polygonaceae
|
| ERPAC | Eriogonum pauciflorum Pursh var. canum (S. Stokes) Reveal | Eriogonum lagopus | Polygonaceae
|
| ERPAG | Eriogonum pauciflorum Pursh var. gnaphalodes (Benth.) Reveal | fewflower buckwheat | Polygonaceae
|
| ERPAN | Eriogonum pauciflorum Pursh var. nebraskense (Rydb.) Reveal | Eriogonum nebraskense | Polygonaceae
|
| ERPAP6 | Eriogonum pauciflorum Pursh var. pauciflorum | fewflower buckwheat | Polygonaceae
|
| ERPA9 | Eriogonum pauciflorum Pursh | fewflower buckwheat | Polygonaceae
|
| ERPE15 | Eriogonum pedunculatum Stokes | Eriogonum luteolum var. pedunculatum | Polygonaceae
|
| ERPE10 | Eriogonum pelinophilum Reveal | Eriogonum clavellatum | Polygonaceae
|
| ERPE6 | Eriogonum pendulum S. Wats. | Waldo buckwheat | Polygonaceae
|
| ERPHC | Eriogonum pharnaceoides Torr. var. cervinum Reveal | wirestem buckwheat | Polygonaceae
|
| ERPHP3 | Eriogonum pharnaceoides Torr. var. pharnaceoides | wirestem buckwheat | Polygonaceae
|
| ERPH2 | Eriogonum pharnaceoides Torr. | wirestem buckwheat | Polygonaceae
|
| ERPI10 | Eriogonum piperi Greene | Eriogonum flavum var. piperi | Polygonaceae
|
| ERPLJ | Eriogonum plumatella Dur. & Hilg. var. jaegeri (Munz & Johnston) S. Stokes ex Munz | Eriogonum plumatella | Polygonaceae
|
| ERPL3 | Eriogonum plumatella Dur. & Hilg. | yucca buckwheat | Polygonaceae
|
| ERPO11 | Eriogonum polifolium Benth. | Eriogonum fasciculatum var. polifolium | Polygonaceae
|
| ERPO4 | Eriogonum polycladon Benth. | sorrel buckwheat | Polygonaceae
|
| ERPO10 | Eriogonum polyphyllum Small ex Rydb. | Eriogonum flavum var. polyphyllum | Polygonaceae
|
| ERPO8 | Eriogonum polypodum Small | foxtail buckwheat | Polygonaceae
|
| ERPR15 | Eriogonum praebens Gandog. | Eriogonum baileyi var. praebens | Polygonaceae
|
| ERPRA | Eriogonum prattenianum Dur. var. avium Reveal & Shevock | Nevada City buckwheat | Polygonaceae
|
| ERPRP | Eriogonum prattenianum Dur. var. prattenianum | Nevada City buckwheat | Polygonaceae
|
| ERPR8 | Eriogonum prattenianum Dur. | Nevada City buckwheat | Polygonaceae
|
| ERPR12 | Eriogonum pringlei Coult. & Fisher | Eriogonum wrightii var. pringlei | Polygonaceae
|
| ERPR9 | Eriogonum prociduum Reveal | prostrate buckwheat | Polygonaceae
|
| ERPRA2 | Eriogonum proliferum Torr. & Gray ssp. anserinum (Greene) Munz | Eriogonum strictum ssp. proliferum var. anserinum | Polygonaceae
|
| ERPR13 | Eriogonum proliferum Torr. & Gray | Eriogonum strictum ssp. proliferum var. proliferum | Polygonaceae
|
| ERPUV | Eriogonum puberulum S. Wats. var. venosum S. Stokes | Eriogonum puberulum | Polygonaceae
|
| ERPU5 | Eriogonum puberulum S. Wats. | Red Creek buckwheat | Polygonaceae
|
| ERPU15 | Eriogonum purpusii Brandeg. | Eriogonum kennedyi var. purpusii | Polygonaceae
|
| ERPU6 | Eriogonum pusillum Torr. & Gray | yellowturbans | Polygonaceae
|
| ERPYB | Eriogonum pyrolifolium Hook. var. bellingerianum M.E. Peck | Eriogonum pyrolifolium var. coryphaeum | Polygonaceae
|
| ERPYC | Eriogonum pyrolifolium Hook. var. coryphaeum Torr. & Gray | Shasta buckwheat | Polygonaceae
|
| ERPYP | Eriogonum pyrolifolium Hook. var. pyrolifolium | Shasta buckwheat | Polygonaceae
|
| ERPY2 | Eriogonum pyrolifolium Hook. | Shasta buckwheat | Polygonaceae
|
| ERRAC | Eriogonum racemosum Nutt. var. coccineum (J.T. Howell) Welsh | Eriogonum zionis var. coccineum | Polygonaceae
|
| ERRAD | Eriogonum racemosum Nutt. var. desertorum S. Stokes | Eriogonum panamintense | Polygonaceae
|
| ERRAN | Eriogonum racemosum Nutt. var. nobile Welsh & Atwood | Eriogonum zionis var. zionis | Polygonaceae
|
| ERRAZ2 | Eriogonum racemosum Nutt. var. zionis (J.T. Howell) Welsh | Eriogonum zionis var. zionis | Polygonaceae
|
| ERRA3 | Eriogonum racemosum Nutt. | redroot buckwheat | Polygonaceae
|
| ERRA9 | Eriogonum ramosissimum Eastw. | Eriogonum leptocladon var. ramosissimum | Polygonaceae
|
| ERREP | Eriogonum reniforme Torr. & Fr�m. ssp. pusillum (Torr. & Gray) S. Stokes | Eriogonum pusillum | Polygonaceae
|
| ERREC | Eriogonum reniforme Torr. & Fr�m. var. comosum M.E. Jones | Eriogonum reniforme | Polygonaceae
|
| ERRE3 | Eriogonum reniforme Torr. & Fr�m. | kidneyleaf buckwheat | Polygonaceae
|
| ERRE9 | Eriogonum revealianum Welsh | Eriogonum corymbosum var. revealianum | Polygonaceae
|
| ERRH3 | Eriogonum rhodanthum A. Nels. & Kennedy | Eriogonum ovalifolium var. nivale | Polygonaceae
|
| ERRI | Eriogonum ripleyi J.T. Howell | Fraziers Well buckwheat | Polygonaceae
|
| ERRI2 | Eriogonum rixfordii S. Stokes | pagoda buckwheat | Polygonaceae
|
| ERRO10 | Eriogonum robustum Greene | granite buckwheat | Polygonaceae
|
| ERRO | Eriogonum rosense A. Nels. & Kennedy | rosy buckwheat | Polygonaceae
|
| ERRO6 | Eriogonum roseum Dur. & Hilg. | wand buckwheat | Polygonaceae
|
| ERROF | Eriogonum rosmarinifolium Nutt. var. foliolosum Nutt. | Eriogonum fasciculatum var. foliolosum | Polygonaceae
|
| ERRO2 | Eriogonum rotundifolium Benth. | roundleaf buckwheat | Polygonaceae
|
| ERRU7 | Eriogonum rubescens Greene | Eriogonum grande var. rubescens | Polygonaceae
|
| ERRU | Eriogonum rubricaule Tidestrom | redstem buckwheat | Polygonaceae
|
| ERRU3 | Eriogonum rupinum Reveal | Wyman Creek buckwheat | Polygonaceae
|
| ERSA13 | Eriogonum salicinum Greene | Eriogonum lonchophyllum var. lonchophyllum | Polygonaceae
|
| ERSA8 | Eriogonum salicornioides Gandog. | saltwort buckwheat | Polygonaceae
|
| ERSA16 | Eriogonum salinum A. Nels. | Eriogonum corymbosum var. corymbosum | Polygonaceae
|