| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| GEMA5 | Geum ×macranthum (Kearney) Boivin | | Rosaceae
|
| GEMAP2 | Geum macrophyllum Willd. ssp. perincisum (Rydb.) Hultén | Geum macrophyllum var. perincisum | Rosaceae
|
| GEMAM | Geum macrophyllum Willd. var. macrophyllum | largeleaf avens | Rosaceae
|
| GEMAP | Geum macrophyllum Willd. var. perincisum (Rydb.) Raup | largeleaf avens | Rosaceae
|
| GEMAR | Geum macrophyllum Willd. var. rydbergii Farw. | Geum macrophyllum var. perincisum | Rosaceae
|
| GEMA4 | Geum macrophyllum Willd. | largeleaf avens | Rosaceae
|
| GEOR3 | Geum oregonense (Scheutz) Rydb. | Geum macrophyllum var. perincisum | Rosaceae
|
| GEPE | Geum peckii Pursh | mountain avens | Rosaceae
|
| GEPE2 | Geum pentapetalum (L.) Makino | Aleutian avens | Rosaceae
|
| GEPEI2 | Geum perincisum Rydb. var. intermedium Boivin | Geum macrophyllum var. perincisum | Rosaceae
|
| GEPE7 | Geum perincisum Rydb. | Geum macrophyllum var. perincisum | Rosaceae
|
| GEPE8 | Geum ×pervale Boivin | Geum pulchrum | Rosaceae
|
| GEPU4 | Geum ×pulchrum Fern. (pro sp.) | | Rosaceae
|
| GERA2 | Geum radiatum Michx. | Appalachian avens | Rosaceae
|
| GERI2 | Geum rivale L. | purple avens | Rosaceae
|
| GEROD | Geum rossii (R. Br.) Ser. var. depressum (Greene) C.L. Hitchc. | Ross' avens | Rosaceae
|
| GEROR | Geum rossii (R. Br.) Ser. var. rossii | Ross' avens | Rosaceae
|
| GEROT | Geum rossii (R. Br.) Ser. var. turbinatum (Rydb.) C.L. Hitchc. | Ross' avens | Rosaceae
|
| GERO2 | Geum rossii (R. Br.) Ser. | Ross' avens | Rosaceae
|
| GESC2 | Geum schofieldii Calder & Taylor | Geum macranthum | Rosaceae
|
| GESTD | Geum strictum Ait. var. decurrens (Rydb.) Kearney & Peebles | Geum aleppicum | Rosaceae
|
| GEST2 | Geum strictum Ait. | Geum aleppicum | Rosaceae
|
| GETRC | Geum triflorum Pursh var. campanulatum (Greene) C.L. Hitchc. | old man's whiskers | Rosaceae
|
| GETRC3 | Geum triflorum Pursh var. canescens (Greene) Kartesz & Gandhi | old man's whiskers | Rosaceae
|
| GETRC2 | Geum triflorum Pursh var. ciliatum (Pursh) Fassett | old man's whiskers | Rosaceae
|
| GETRT | Geum triflorum Pursh var. triflorum | old man's whiskers | Rosaceae
|
| GETR | Geum triflorum Pursh | old man's whiskers | Rosaceae
|
| GETU | Geum turbinatum Rydb. | Geum rossii var. turbinatum | Rosaceae
|
| GEUR | Geum urbanum L. | herb bennet | Rosaceae
|
| GEVE | Geum vernum (Raf.) Torr. & Gray | spring avens | Rosaceae
|
| GEVI4 | Geum virginianum L. | cream avens | Rosaceae
|
| GEUM | Geum L. | avens | Rosaceae
|
| GHBO | Ghinia boxiana Moldenke | Tamonea boxiana | Verbenaceae
|
| GHSP | Ghinia spinosa (Sw.) Britt. & Wilson | Tamonea boxiana | Verbenaceae
|
| GIGE | Gibasis geniculata (Jacq.) Rohw. | Tahitian bridalveil | Commelinaceae
|
| GIPE3 | Gibasis pellucida (Mart. & Gal.) D.R. Hunt | dotted bridalveil | Commelinaceae
|
| GIBAS | Gibasis Raf. | bridalveil | Commelinaceae
|
| GIRU2 | Gibbesia rugelii (Chapman) Small | Paronychia rugelii var. rugelii | Caryophyllaceae
|
| GIGE2 | Gifola germanica Dumort. | Filago vulgaris | Asteraceae
|
| GIAP | Gigantochloa apus (Schultes f.) Kurz ex Munro | gigantochloa | Poaceae
|
| GIVE | Gigantochloa verticillata (Willd.) Munro | gigantochloa | Poaceae
|
| GIGAN | Gigantochloa Kurz ex Munro | gigantochloa | Poaceae
|
| GIABI | Gilia abramsii (Brand) Mason & A. Grant ssp. integrifolia Mason & A. Grant | Gilia ochroleuca ssp. exilis | Polemoniaceae
|
| GIAB | Gilia abramsii (Brand) Mason & A. Grant | Gilia ochroleuca ssp. exilis | Polemoniaceae
|
| GIAC3 | Gilia acerosa (Gray) Britt. | Gilia rigidula ssp. acerosa | Polemoniaceae
|
| GIACA | Gilia achilleifolia Benth. ssp. achilleifolia | California gilia | Polemoniaceae
|
| GIACC | Gilia achilleifolia Benth. ssp. chamissonis (Greene) Brand | Gilia capitata ssp. chamissonis | Polemoniaceae
|
| GIACM | Gilia achilleifolia Benth. ssp. multicaulis (Benth.) V.& A. Grant | California gilia | Polemoniaceae
|
| GIACS | Gilia achilleifolia Benth. ssp. staminea (Greene) Mason & A. Grant | Gilia capitata ssp. staminea | Polemoniaceae
|
| GIACC2 | Gilia achilleifolia Benth. var. chamissonis (Greene) A. Nels. & J.F. Macbr. | Gilia capitata ssp. chamissonis | Polemoniaceae
|
| GIAC2 | Gilia achilleifolia Benth. | California gilia | Polemoniaceae
|
| GIAGE | Gilia aggregata (Pursh) Spreng. ssp. euaggregata Brand | Ipomopsis aggregata ssp. aggregata | Polemoniaceae
|
| GIAGF | Gilia aggregata (Pursh) Spreng. ssp. formosissima (Greene) Wherry | Ipomopsis aggregata ssp. formosissima | Polemoniaceae
|
| GIAGA2 | Gilia aggregata (Pursh) Spreng. var. arizonica (Greene) Fosberg | Ipomopsis arizonica | Polemoniaceae
|
| GIAGA3 | Gilia aggregata (Pursh) Spreng. var. attenuata Gray | Ipomopsis aggregata ssp. attenuata | Polemoniaceae
|
| GIAGB | Gilia aggregata (Pursh) Spreng. var. bridgesii Gray | Ipomopsis aggregata ssp. bridgesii | Polemoniaceae
|
| GIAGC | Gilia aggregata (Pursh) Spreng. var. candida (Rydb.) Cronq. | Ipomopsis aggregata ssp. candida | Polemoniaceae
|
| GIAGM2 | Gilia aggregata (Pursh) Spreng. var. macrosiphon Kearney & Peebles | Ipomopsis macrosiphon | Polemoniaceae
|
| GIAGM | Gilia aggregata (Pursh) Spreng. var. maculata M.E. Jones | Ipomopsis aggregata ssp. formosissima | Polemoniaceae
|
| GIAG | Gilia aggregata (Pursh) Spreng. | Ipomopsis aggregata ssp. aggregata | Polemoniaceae
|
| GIALA | Gilia aliquanta A.& V. Grant ssp. aliquanta | puffcalyx gilia | Polemoniaceae
|
| GIALB | Gilia aliquanta A.& V. Grant ssp. breviloba A.& V. Grant | puffcalyx gilia | Polemoniaceae
|
| GIAL | Gilia aliquanta A.& V. Grant | puffcalyx gilia | Polemoniaceae
|
| GIAN | Gilia angelensis V. Grant | chaparral gilia | Polemoniaceae
|
| GIAR | Gilia arizonica (Greene) Rydb. | Ipomopsis arizonica | Polemoniaceae
|
| GIAT | Gilia attenuata (Gray) A. Nels. | Ipomopsis aggregata ssp. attenuata | Polemoniaceae
|
| GIAU | Gilia australis (Mason & A. Grant) V.& A. Grant | southern gilia | Polemoniaceae
|
| GIAU2 | Gilia austrooccidentalis (A.& V. Grant) A.& V. Grant | southwestern gilia | Polemoniaceae
|
| GIBI3 | Gilia bigelovii Gray | Linanthus bigelovii | Polemoniaceae
|
| GIBR3 | Gilia brachysiphon Woot. & Standl. | Ipomopsis polyantha | Polemoniaceae
|
| GIBR4 | Gilia brandegeei Gray | Polemonium brandegeei | Polemoniaceae
|
| GIBRA | Gilia brecciarum M.E. Jones ssp. argusana A.& V. Grant | Gilia brecciarum ssp. neglecta | Polemoniaceae
|
| GIBRB | Gilia brecciarum M.E. Jones ssp. brecciarum | Nevada gilia | Polemoniaceae
|
| GIBRJ | Gilia brecciarum M.E. Jones ssp. jacens (A.& V. Grant) Day, comb. nov. ined. | Nevada gilia | Polemoniaceae
|
| GIBRN | Gilia brecciarum M.E. Jones ssp. neglecta A.& V. Grant | Nevada gilia | Polemoniaceae
|
| GIBR | Gilia brecciarum M.E. Jones | Nevada gilia | Polemoniaceae
|
| GIBR2 | Gilia bridgesii (Gray) Wherry | Ipomopsis aggregata ssp. bridgesii | Polemoniaceae
|
| GIBU | Gilia burleyana A. Nels. | Ipomopsis congesta ssp. congesta | Polemoniaceae
|
| GICA8 | Gilia caespitosa Gray | Rabbit Valley gilia | Polemoniaceae
|
| GICA12 | Gilia calcarea M.E. Jones | Gilia mcvickerae | Polemoniaceae
|
| GICA10 | Gilia calothrysa I.M. Johnston | Ipomopsis macombii | Polemoniaceae
|
| GICA2 | Gilia campanulata Gray | bellshape gilia | Polemoniaceae
|
| GICA11 | Gilia campylantha Woot. & Standl. | Ipomopsis pinnata | Polemoniaceae
|
| GICAB | Gilia cana (M.E. Jones) Heller ssp. bernardina A.& V. Grant | showy gilia | Polemoniaceae
|
| GICAC2 | Gilia cana (M.E. Jones) Heller ssp. cana | showy gilia | Polemoniaceae
|
| GICAS | Gilia cana (M.E. Jones) Heller ssp. speciformis A.& V. Grant | showy gilia | Polemoniaceae
|
| GICAS2 | Gilia cana (M.E. Jones) Heller ssp. speciosa (Jepson) A.& V. Grant | showy gilia | Polemoniaceae
|
| GICAT | Gilia cana (M.E. Jones) Heller ssp. triceps (Brand) A.& V. Grant | showy gilia | Polemoniaceae
|
| GICA3 | Gilia cana (M.E. Jones) Heller | showy gilia | Polemoniaceae
|
| GICAC4 | Gilia candida Rydb. ssp. collina (Greene) Wherry | Ipomopsis aggregata ssp. collina | Polemoniaceae
|
| GICAV | Gilia candida Rydb. ssp. vera Wherry | Ipomopsis aggregata ssp. candida | Polemoniaceae
|
| GICA9 | Gilia candida Rydb. | Ipomopsis aggregata ssp. candida | Polemoniaceae
|
| GICA4 | Gilia capillaris Kellogg | miniature gilia | Polemoniaceae
|
| GICAA | Gilia capitata Sims ssp. abrotanifolia (Nutt. ex Greene) V. Grant | bluehead gilia | Polemoniaceae
|
| GICAC3 | Gilia capitata Sims ssp. capitata | bluehead gilia | Polemoniaceae
|
| GICAC | Gilia capitata Sims ssp. chamissonis (Greene) V. Grant | bluehead gilia | Polemoniaceae
|
| GICAM | Gilia capitata Sims ssp. mediomontana V. Grant | foothill gilia | Polemoniaceae
|
| GICAP | Gilia capitata Sims ssp. pacifica V. Grant | Pacific gilia | Polemoniaceae
|
| GICAP2 | Gilia capitata Sims ssp. pedemontana V. Grant | bluehead gilia | Polemoniaceae
|
| GICAS3 | Gilia capitata Sims ssp. staminea (Greene) V. Grant | bluehead gilia | Polemoniaceae
|
| GICAT2 | Gilia capitata Sims ssp. tomentosa (Eastw. ex Brand) V. Grant | bluehead gilia | Polemoniaceae
|