| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| GAURA | Gaura L. | beeblossom | Onagraceae
|
| GACA7 | Gaurella canescens (Torr. & Fr�m.) A. Nels. | Oenothera canescens | Onagraceae
|
| GAAT | Gaussia attenuata (O.F. Cook) Becc. | llume | Arecaceae
|
| GAUSS | Gaussia H. Wendl. | gaussia | Arecaceae
|
| GAVI5 | Gaya violacea Rose | Batesimalva violacea | Malvaceae
|
| GABA | Gaylussacia baccata (Wangenh.) K. Koch | black huckleberry | Ericaceae
|
| GABR5 | Gaylussacia brachycera (Michx.) Gray | box huckleberry | Ericaceae
|
| GADUB | Gaylussacia dumosa (Andr.) Torr. & Gray var. bigeloviana Fern. | Gaylussacia dumosa | Ericaceae
|
| GADU | Gaylussacia dumosa (Andr.) Torr. & Gray | dwarf huckleberry | Ericaceae
|
| GAFRN | Gaylussacia frondosa (L.) Torr. & Gray ex Torr. var. nana Gray | Gaylussacia nana | Ericaceae
|
| GAFRT | Gaylussacia frondosa (L.) Torr. & Gray ex Torr. var. tomentosa Gray | Gaylussacia tomentosa | Ericaceae
|
| GAFR2 | Gaylussacia frondosa (L.) Torr. & Gray ex Torr. | blue huckleberry | Ericaceae
|
| GAMO3 | Gaylussacia mosieri Small | woolly huckleberry | Ericaceae
|
| GANA | Gaylussacia nana (Gray) Small | Confederate huckleberry | Ericaceae
|
| GAOR3 | Gaylussacia orocola Small | Gaylussacia dumosa | Ericaceae
|
| GATO5 | Gaylussacia tomentosa (Gray) Pursh ex Small | hairytwig huckleberry | Ericaceae
|
| GAUR | Gaylussacia ursina (M.A. Curtis) Torr. & Gray ex Gray | bear huckleberry | Ericaceae
|
| GAYLU | Gaylussacia Kunth | huckleberry | Ericaceae
|
| GACR2 | Gayoides crispum (L.) Small | Herissantia crispa | Malvaceae
|
| GADE2 | Gayophytum decipiens Lewis & Szweykowski | deceptive groundsmoke | Onagraceae
|
| GADID | Gayophytum diffusum Torr. & Gray ssp. diffusum | spreading groundsmoke | Onagraceae
|
| GADIP | Gayophytum diffusum Torr. & Gray ssp. parviflorum Lewis & Szweykowski | spreading groundsmoke | Onagraceae
|
| GADIS | Gayophytum diffusum Torr. & Gray var. strictipes (Hook.) Dorn | Gayophytum diffusum ssp. parviflorum | Onagraceae
|
| GADIV | Gayophytum diffusum Torr. & Gray var. villosum Munz | Gayophytum heterozygum | Onagraceae
|
| GADI2 | Gayophytum diffusum Torr. & Gray | spreading groundsmoke | Onagraceae
|
| GAER2 | Gayophytum eriospermum Coville | Coville's groundsmoke | Onagraceae
|
| GAHEE | Gayophytum helleri Rydb. var. erosulatum Jepson | Gayophytum diffusum ssp. parviflorum | Onagraceae
|
| GAHEG2 | Gayophytum helleri Rydb. var. glabrum Munz | Gayophytum racemosum | Onagraceae
|
| GAHE6 | Gayophytum helleri Rydb. | Gayophytum racemosum | Onagraceae
|
| GAHE3 | Gayophytum heterozygum Lewis & Szweykowski | zigzag groundsmoke | Onagraceae
|
| GAHUH | Gayophytum humile Juss. var. hirtellum Munz | Gayophytum racemosum | Onagraceae
|
| GAHU2 | Gayophytum humile Juss. | dwarf groundsmoke | Onagraceae
|
| GAIN6 | Gayophytum intermedium Rydb. | Gayophytum diffusum ssp. parviflorum | Onagraceae
|
| GALAH3 | Gayophytum lasiospermum Greene var. hoffmannii Munz | Gayophytum diffusum ssp. parviflorum | Onagraceae
|
| GALA12 | Gayophytum lasiospermum Greene | Gayophytum diffusum ssp. parviflorum | Onagraceae
|
| GANUA | Gayophytum nuttallii Torr. & Gray var. abramsii Munz | Gayophytum diffusum ssp. parviflorum | Onagraceae
|
| GANUI2 | Gayophytum nuttallii Torr. & Gray var. intermedium (Rydb.) Munz | Gayophytum diffusum ssp. parviflorum | Onagraceae
|
| GANU3 | Gayophytum nuttallii Torr. & Gray | Gayophytum humile | Onagraceae
|
| GAOL | Gayophytum oligospermum Lewis & Szweykowski | pinegrove groundsmoke | Onagraceae
|
| GARAC | Gayophytum racemosum Torr. & Gray var. caesium (Torr. & Gray) Munz | Gayophytum racemosum | Onagraceae
|
| GARA | Gayophytum racemosum Torr. & Gray | blackfoot groundsmoke | Onagraceae
|
| GARA2 | Gayophytum ramosissimum Torr. & Gray | pinyon groundsmoke | Onagraceae
|
| GAST5 | Gayophytum strictum Gray | Epilobium torreyi | Onagraceae
|
| GAYOP | Gayophytum A. Juss. | groundsmoke | Onagraceae
|
| GALI4 | Gazania linearis (Thunb.) Druce | treasureflower | Asteraceae
|
| GALO2 | Gazania longiscapa DC. | Gazania linearis | Asteraceae
|
| GARI2 | Gazania rigens (L.) Gaertn. | treasure-flower | Asteraceae
|
| GASP14 | Gazania splendens Lem. | Gazania rigens | Asteraceae
|
| GAZAN | Gazania Gaertn. | gazania | Asteraceae
|
| GEGI | Geheebia gigantea (Funck) Boul. | giant geheebia moss | Pottiaceae
|
| GEHEE | Geheebia Schimp. | geheebia moss | Pottiaceae
|
| GESY2 | Geisleria sychnogonioides Nitschke | Strigula sychnogonioides | Strigulaceae
|
| GERA4 | Gelsemium rankinii Small | Rankin's trumpetflower | Loganiaceae
|
| GESE | Gelsemium sempervirens (L.) St. Hil. | evening trumpetflower | Loganiaceae
|
| GELSE | Gelsemium Juss. | trumpetflower | Loganiaceae
|
| GECH2 | Gemmingia chinensis (L.) Kuntze | Belamcanda chinensis | Iridaceae
|
| GEAMC | Genipa americana L. var. caruto (Kunth) K. Schum. | Genipa americana | Rubiaceae
|
| GEAM | Genipa americana L. | jagua | Rubiaceae
|
| GECA12 | Genipa caruto Kunth | Genipa americana | Rubiaceae
|
| GECL2 | Genipa clusiifolia Jacq. | Casasia clusiifolia | Rubiaceae
|
| GENIP | Genipa L. | genipa | Rubiaceae
|
| GECA16 | Genista canariensis L. | Canary broom | Fabaceae
|
| GELI5 | Genista linifolia L. | Mediterranean broom | Fabaceae
|
| GEMA10 | Genista maderensis (Webb & Berth.) Lowe | Madeira Dyer's greenweed | Fabaceae
|
| GEMO2 | Genista monspessulana (L.) L. Johnson | French broom | Fabaceae
|
| GEST9 | Genista stenopetala Webb & Berth. | leafy broom | Fabaceae
|
| GETI | Genista tinctoria L. | Dyer's greenweed | Fabaceae
|
| GENIS | Genista L. | broom | Fabaceae
|
| GEDU | Genistidium dumosum I.M. Johnston | brushpea | Fabaceae
|
| GENIS2 | Genistidium I.M. Johnston | brushpea | Fabaceae
|
| GEAC4 | Gentiana acaulis L. | gentian | Gentianaceae
|
| GEAC | Gentiana acuta Michx. | Gentianella amarella ssp. acuta | Gentianaceae
|
| GEAFB | Gentiana affinis Griseb. var. bigelovii (Gray) Kusnez. | Gentiana affinis | Gentianaceae
|
| GEAFF | Gentiana affinis Griseb. var. forwoodii (Gray) Kusnez. | Gentiana affinis | Gentianaceae
|
| GEAFM | Gentiana affinis Griseb. var. major A. Nels. & Kennedy | Gentiana affinis | Gentianaceae
|
| GEAFO | Gentiana affinis Griseb. var. ovata Gray | Gentiana affinis | Gentianaceae
|
| GEAFP | Gentiana affinis Griseb. var. parvidentata Kusnez. | Gentiana affinis | Gentianaceae
|
| GEAF | Gentiana affinis Griseb. | pleated gentian | Gentianaceae
|
| GEAL4 | Gentiana alba Muhl. ex Nutt. | plain gentian | Gentianaceae
|
| GEAL5 | Gentiana aleutica Cham. & Schlecht. | Gentianella propinqua ssp. aleutica | Gentianaceae
|
| GEAL2 | Gentiana algida Pallas | whitish gentian | Gentianaceae
|
| GEAMA2 | Gentiana amarella L. ssp. acuta (Michx.) Hult�n | Gentianella amarella ssp. acuta | Gentianaceae
|
| GEAMH2 | Gentiana amarella L. ssp. heterosepala (Engelm.) J. Gillett | Gentianella amarella ssp. heterosepala | Gentianaceae
|
| GEAMA4 | Gentiana amarella L. var. acuta (Michx.) Herder | Gentianella amarella ssp. acuta | Gentianaceae
|
| GEAMP2 | Gentiana amarella L. var. plebeja (Ledeb. ex Spreng.) Hult�n | Gentianella amarella ssp. acuta | Gentianaceae
|
| GEAMS | Gentiana amarella L. var. stricta (Griseb.) S. Wats. | Gentianella amarella ssp. acuta | Gentianaceae
|
| GEAM4 | Gentiana amarella auct. p.p. non L. | Gentianella amarella ssp. acuta | Gentianaceae
|
| GEANA | Gentiana andrewsii Griseb. var. andrewsii | closed bottle gentian | Gentianaceae
|
| GEAND | Gentiana andrewsii Griseb. var. dakotica A. Nels. | Dakota gentian | Gentianaceae
|
| GEAN | Gentiana andrewsii Griseb. | closed bottle gentian | Gentianaceae
|
| GEAP3 | Gentiana aphylla Jacq. | Voyria aphylla | Gentianaceae
|
| GEAQ | Gentiana aquatica auct. non L. | Gentiana fremontii | Gentianaceae
|
| GEAR2 | Gentiana arctophila Griseb. | Gentianella propinqua ssp. propinqua | Gentianaceae
|
| GEAU3 | Gentiana austromontana Pringle & Sharp | Appalachian gentian | Gentianaceae
|
| GEAU4 | Gentiana autumnalis L. | pinebarren gentian | Gentianaceae
|
| GEBA4 | Gentiana barbata Froel. | Gentianopsis detonsa ssp. detonsa | Gentianaceae
|
| GEBA6 | Gentiana barbellata Engelm. | Gentianopsis barbellata | Gentianaceae
|
| GEBI4 | Gentiana bigelovii Gray | Gentiana affinis | Gentianaceae
|
| GEBI5 | Gentiana �billingtonii Farw. (pro sp.) | | Gentianaceae
|
| GEBI3 | Gentiana bisetaea T.J. Howell | Gentiana setigera | Gentianaceae
|
| GECAA2 | Gentiana calycosa Griseb. var. asepala (Maguire) C.L. Hitchc. | Gentiana parryi | Gentianaceae
|