| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ESCAD | Eschscholzia californica Cham. var. douglasii (Benth.) Gray | Eschscholzia californica ssp. californica | Papaveraceae
|
| ESCAM2 | Eschscholzia californica Cham. var. maritima (Greene) Jepson | Eschscholzia californica ssp. californica | Papaveraceae
|
| ESCAP | Eschscholzia californica Cham. var. peninsularis (Greene) Munz | Eschscholzia californica ssp. californica | Papaveraceae
|
| ESCA2 | Eschscholzia californica Cham. | California poppy | Papaveraceae
|
| ESCO | Eschscholzia covillei Greene | Eschscholzia minutiflora ssp. covillei | Papaveraceae
|
| ESEL2 | Eschscholzia elegans Greene | Eschscholzia ramosa | Papaveraceae
|
| ESGL | Eschscholzia glyptosperma Greene | desert poppy | Papaveraceae
|
| ESHY | Eschscholzia hypecoides Benth. | San Benito poppy | Papaveraceae
|
| ESLEK | Eschscholzia lemmonii Greene ssp. kernensis (Munz) C. Clark | Tejon poppy | Papaveraceae
|
| ESLEL | Eschscholzia lemmonii Greene ssp. lemmonii | Lemmon's poppy | Papaveraceae
|
| ESLEA | Eschscholzia lemmonii Greene var. asprella (Greene) Jepson | Eschscholzia lemmonii ssp. lemmonii | Papaveraceae
|
| ESLEL2 | Eschscholzia lemmonii Greene var. laxa Greene | Eschscholzia lemmonii ssp. lemmonii | Papaveraceae
|
| ESLE | Eschscholzia lemmonii Greene | Lemmon's poppy | Papaveraceae
|
| ESLO | Eschscholzia lobbii Greene | fryingpans | Papaveraceae
|
| ESME | Eschscholzia mexicana Greene | Eschscholzia californica ssp. mexicana | Papaveraceae
|
| ESMIC2 | Eschscholzia minutiflora S. Wats. ssp. covillei (Greene) C. Clark | Coville's poppy | Papaveraceae
|
| ESMIM3 | Eschscholzia minutiflora S. Wats. ssp. minutiflora | pygmy poppy | Papaveraceae
|
| ESMIT | Eschscholzia minutiflora S. Wats. ssp. twisselmannii C. Clark | Red Rock poppy | Papaveraceae
|
| ESMID | Eschscholzia minutiflora S. Wats. var. darwinensis M.E. Jones | Eschscholzia minutiflora ssp. covillei | Papaveraceae
|
| ESMI | Eschscholzia minutiflora S. Wats. | pygmy poppy | Papaveraceae
|
| ESPA | Eschscholzia parishii Greene | Parish's poppy | Papaveraceae
|
| ESPR | Eschscholzia procera Greene | Eschscholzia californica ssp. californica | Papaveraceae
|
| ESRA | Eschscholzia ramosa Greene | Channel Island poppy | Papaveraceae
|
| ESRH | Eschscholzia rhombipetala Greene | diamondpetal California poppy | Papaveraceae
|
| ESCHS | Eschscholzia Cham. | California poppy | Papaveraceae
|
| ESAL | Escobaria albicolumnaria Hester | column foxtail cactus | Cactaceae
|
| ESAL2 | Escobaria alversonii (Coult.) N.P. Taylor, comb. nov. ined. | cushion foxtail cactus | Cactaceae
|
| ESBE2 | Escobaria bella Britt. & Rose | Escobaria emskoetteriana | Cactaceae
|
| ESCH | Escobaria chaffeyi Britt. & Rose | Escobaria dasyacantha var. chaffeyi | Cactaceae
|
| ESDAC | Escobaria dasyacantha (Engelm.) Britt. & Rose var. chaffeyi (Britt. & Rose) N.P. Taylor | Chaffey's foxtail cactus | Cactaceae
|
| ESDAD | Escobaria dasyacantha (Engelm.) Britt. & Rose var. dasyacantha | Big Bend foxtail cactus | Cactaceae
|
| ESDAD2 | Escobaria dasyacantha (Engelm.) Britt. & Rose var. duncanii (Hester) N.P. Taylor | Duncan's foxtail cactus | Cactaceae
|
| ESDAV | Escobaria dasyacantha (Engelm.) Britt. & Rose var. varicolor (Tiegel) D.R. Hunt | Escobaria tuberculosa | Cactaceae
|
| ESDA | Escobaria dasyacantha (Engelm.) Britt. & Rose | Big Bend foxtail cactus | Cactaceae
|
| ESDU | Escobaria duncanii (Hester) Backeberg | Escobaria dasyacantha var. duncanii | Cactaceae
|
| ESEM | Escobaria emskoetteriana (Quehl) Borg | junior Tom Thumb cactus | Cactaceae
|
| ESGU | Escobaria guadalupensis Brack & Heil | Guadalupe Mountain foxtail cactus | Cactaceae
|
| ESHE | Escobaria hesteri (Y. Wright) Buxbaum | Hester's foxtail cactus | Cactaceae
|
| ESLE2 | Escobaria leei Rose ex B�decker | Escobaria sneedii var. leei | Cactaceae
|
| ESMI2 | Escobaria minima (Baird) D.R. Hunt | birdfoot cactus | Cactaceae
|
| ESMIC | Escobaria missouriensis (Sweet) D.R. Hunt var. caespitosa (Engelm.) D.R. Hunt | Escobaria missouriensis var. similis | Cactaceae
|
| ESMIM | Escobaria missouriensis (Sweet) D.R. Hunt var. marstonii (Clover) D.R. Hunt | Marston's foxtail cactus | Cactaceae
|
| ESMIM2 | Escobaria missouriensis (Sweet) D.R. Hunt var. missouriensis | Missouri foxtail cactus | Cactaceae
|
| ESMIR | Escobaria missouriensis (Sweet) D.R. Hunt var. robustior (Engelm.) D.R. Hunt | Missouri foxtail cactus | Cactaceae
|
| ESMIS | Escobaria missouriensis (Sweet) D.R. Hunt var. similis (Engelm.) N.P. Taylor | Missouri foxtail cactus | Cactaceae
|
| ESMI3 | Escobaria missouriensis (Sweet) D.R. Hunt | Missouri foxtail cactus | Cactaceae
|
| ESNE | Escobaria nellieae (Croizat) Backeberg | Escobaria minima | Cactaceae
|
| ESORK | Escobaria orcuttii B�decker var. koenigii Castetter, Pierce & Schwerin | Escobaria orcuttii | Cactaceae
|
| ESORM | Escobaria orcuttii B�decker var. macraxima Castetter, Pierce & Schwerin | Escobaria orcuttii | Cactaceae
|
| ESOR | Escobaria orcuttii B�decker | Orcutt's foxtail cactus | Cactaceae
|
| ESOR2 | Escobaria organensis (A.D. Zimmerman) Castetter, Pierce & Schwerin | Organ Mountain foxtail cactus | Cactaceae
|
| ESRO | Escobaria robbinsiorum (W.H. Earle) D.R. Hunt | Cochise foxtail cactus | Cactaceae
|
| ESRU2 | Escobaria runyonii Britt. & Rose | Escobaria emskoetteriana | Cactaceae
|
| ESSA | Escobaria sandbergii Castetter, Pierce & Schwerin | San Andres Mountain foxtail cactus | Cactaceae
|
| ESSNL | Escobaria sneedii Britt. & Rose var. leei (Rose ex B�decker) D.R. Hunt | carpet foxtail cactus | Cactaceae
|
| ESSNS | Escobaria sneedii Britt. & Rose var. sneedii | carpet foxtail cactus | Cactaceae
|
| ESSN | Escobaria sneedii Britt. & Rose | carpet foxtail cactus | Cactaceae
|
| ESST | Escobaria strobiliformis auct. non (Poselg.) Scheer ex B�decker | Escobaria tuberculosa | Cactaceae
|
| ESTUV | Escobaria tuberculosa (Engelm.) Britt. & Rose var. varicolor (Tiegel) Brack & Heil | Escobaria tuberculosa | Cactaceae
|
| ESTU | Escobaria tuberculosa (Engelm.) Britt. & Rose | whitecolumn foxtail cactus | Cactaceae
|
| ESVI | Escobaria villardii Castetter, Pierce & Schwerin | Sacramento Mountain foxtail cactus | Cactaceae
|
| ESVIA2 | Escobaria vivipara (Nutt.) Buxbaum var. alversonii (Coult.) D.R. Hunt | Escobaria alversonii | Cactaceae
|
| ESVIA | Escobaria vivipara (Nutt.) Buxbaum var. arizonica (Engelm.) D.R. Hunt | Arizona spinystar | Cactaceae
|
| ESVIB | Escobaria vivipara (Nutt.) Buxbaum var. bisbeeana (Orcutt) D.R. Hunt | Bisbee spinystar | Cactaceae
|
| ESVIB2 | Escobaria vivipara (Nutt.) Buxbaum var. buoflama (P.C. Fischer) N.P. Taylor | spinystar | Cactaceae
|
| ESVID | Escobaria vivipara (Nutt.) Buxbaum var. deserti (Engelm.) D.R. Hunt | desert spinystar | Cactaceae
|
| ESVIK | Escobaria vivipara (Nutt.) Buxbaum var. kaibabensis (P.C. Fischer) N.P. Taylor | Kaibab spinystar | Cactaceae
|
| ESVIN | Escobaria vivipara (Nutt.) Buxbaum var. neomexicana (Engelm.) Buxbaum | New Mexico spinystar | Cactaceae
|
| ESVIR | Escobaria vivipara (Nutt.) Buxbaum var. radiosa (Engelm.) D.R. Hunt | spinystar | Cactaceae
|
| ESVIR2 | Escobaria vivipara (Nutt.) Buxbaum var. rosea (Clokey) D.R. Hunt | spinystar | Cactaceae
|
| ESVIV | Escobaria vivipara (Nutt.) Buxbaum var. vivipara | spinystar | Cactaceae
|
| ESVI2 | Escobaria vivipara (Nutt.) Buxbaum | spinystar | Cactaceae
|
| ESCOB | Escobaria Britt. & Rose | foxtail cactus | Cactaceae
|
| ESBE | Esenbeckia berlandieri Baill. ex Hemsl. | Berlandier's jopoy | Rutaceae
|
| ESRU3 | Esenbeckia runyonii Morton | Esenbeckia berlandieri | Rutaceae
|
| ESENB | Esenbeckia Kunth | jopoy | Rutaceae
|
| ESAM | Espeletia amplexicaulis Nutt. | Wyethia amplexicaulis | Asteraceae
|
| ESID | Esslingeriana idahoensis (Essl.) Hale & M. J. Lai | Idaho Esslinger's lichen | Parmeliaceae
|
| ESSLI | Esslingeriana Hale & M. J. Lai | Esslinger's lichen | Parmeliaceae
|
| ETSP | Ethulia sparganophora L. | Struchium sparganophorum | Asteraceae
|
| ETCE | Etlingera cevuga (Seem.) R.M. Sm. | waxflower | Zingiberaceae
|
| ETEL | Etlingera elatior (Jack) R.M. Sm. | torch-ginger | Zingiberaceae
|
| ETLIN | Etlingera Giseke | waxflower | Zingiberaceae
|
| EUEL | Eubotrys elongata (Small) Small | Leucothoe racemosa | Ericaceae
|
| EURAE | Eubotrys racemosa (L.) Nutt. var. elongata (Small) Fern. | Leucothoe racemosa | Ericaceae
|
| EURA5 | Eubotrys racemosa (L.) Nutt. | Leucothoe racemosa | Ericaceae
|
| EURE10 | Eubotrys recurva (Buckl.) Britt. | Leucothoe recurva | Ericaceae
|
| EUAMJ | Eubrachion ambiguum (Hook. & Arn.) Engl. var. jamaicense Krug & Urban | tapeworm-plant | Eremolepidaceae
|
| EUAM3 | Eubrachion ambiguum (Hook. & Arn.) Engl. | tapeworm-plant | Eremolepidaceae
|
| EUBRA | Eubrachion Hook. f. | tapeworm-plant | Eremolepidaceae
|
| EUAL9 | Eucalyptus alba Reinw. ex Blume | white eucalyptus | Myrtaceae
|
| EUAL80 | Eucalyptus albens Benth. | whitebox | Myrtaceae
|
| EUAM81 | Eucalyptus amygdalina Labill. | blackpeppermint | Myrtaceae
|
| EUBO2 | Eucalyptus botryoides Sm. | southern mahogany | Myrtaceae
|
| EUBR2 | Eucalyptus bridgesiana R. Baker | applebox | Myrtaceae
|
| EUCA | Eucalyptus calophylla R. Br. | redgum | Myrtaceae
|
| EUCA2 | Eucalyptus camaldulensis Dehnhardt | river redgum | Myrtaceae
|
| EUCI80 | Eucalyptus cinerea F. Muell. ex Benth. | argyle apple | Myrtaceae
|
| EUCI | Eucalyptus citriodora Hook. | lemonscented gum | Myrtaceae
|
| EUCL | Eucalyptus cladocalyx F. Muell. | sugargum | Myrtaceae
|
| EUCO3 | Eucalyptus cornuta Labill. | yate | Myrtaceae
|