| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| GATEB | Galeopsis tetrahit L. var. bifida (Boenn.) Lej. & Court. | Galeopsis bifida | Lamiaceae
|
| GATE2 | Galeopsis tetrahit L. | brittlestem hempnettle | Lamiaceae
|
| GALEO | Galeopsis L. | hempnettle | Lamiaceae
|
| GASP11 | Galeorchis spectabilis (L.) Rydb. | Galearis spectabilis | Orchidaceae
|
| GAAR7 | Galinsoga aristulata Bickn. | Galinsoga quadriradiata | Asteraceae
|
| GABI4 | Galinsoga bicolorata St. John & White | Galinsoga quadriradiata | Asteraceae
|
| GACA10 | Galinsoga caracasana (DC.) Schultz-Bip. | Galinsoga quadriradiata | Asteraceae
|
| GACI4 | Galinsoga ciliata (Raf.) Blake | Galinsoga quadriradiata | Asteraceae
|
| GAPAS | Galinsoga parviflora Cav. var. semicalva Gray | Galinsoga parviflora | Asteraceae
|
| GAPA2 | Galinsoga parviflora Cav. | gallant-soldier | Asteraceae
|
| GAQU | Galinsoga quadriradiata Cav. | shaggy-soldier | Asteraceae
|
| GASEP2 | Galinsoga semicalva (Gray) St. John & White var. percalva Blake | Galinsoga parviflora | Asteraceae
|
| GASE5 | Galinsoga semicalva (Gray) St. John & White | Galinsoga parviflora | Asteraceae
|
| GALIN | Galinsoga Ruiz & Pav�n | gallant-soldier | Asteraceae
|
| GAOF2 | Galipea officinalis Hanc. | Angostura tree | Rutaceae
|
| GALIP | Galipea Aublet | galipea | Rutaceae
|
| GAAGE | Galium agreste Wallr. var. echinospermum Wallr. | Galium aparine | Rubiaceae
|
| GAAL | Galium album P. Mill. | white bedstraw | Rubiaceae
|
| GAAMA | Galium ambiguum W. Wight ssp. ambiguum | Yolla Bolly bedstraw | Rubiaceae
|
| GAAMS2 | Galium ambiguum W. Wight ssp. siskiyouense (Ferris) Dempster & Stebbins | Siskiyou bedstraw | Rubiaceae
|
| GAAMS | Galium ambiguum W. Wight var. siskiyouense Ferris | Galium ambiguum ssp. siskiyouense | Rubiaceae
|
| GAAM2 | Galium ambiguum W. Wight | Yolla Bolly bedstraw | Rubiaceae
|
| GAANA | Galium andrewsii Gray ssp. andrewsii | Andrews' bedstraw | Rubiaceae
|
| GAANG | Galium andrewsii Gray ssp. gatense (Dempster) Dempster & Stebbins | serpentine bedstraw | Rubiaceae
|
| GAANI | Galium andrewsii Gray ssp. intermedium Dempster & Stebbins | phloxleaf bedstraw | Rubiaceae
|
| GAANG4 | Galium andrewsii Gray var. gatense Dempster | Galium andrewsii ssp. gatense | Rubiaceae
|
| GAAN | Galium andrewsii Gray | phloxleaf bedstraw | Rubiaceae
|
| GAANP | Galium anglicum Huds. var. parvifolium (Gaud. ex Roemer & J.A. Schultes) DC. | Galium divaricatum | Rubiaceae
|
| GAAN7 | Galium anglicum Huds. | Galium divaricatum | Rubiaceae
|
| GAANA2 | Galium angustifolium Nutt. ex Gray ssp. angustifolium | narrowleaf bedstraw | Rubiaceae
|
| GAANB | Galium angustifolium Nutt. ex Gray ssp. borregoense Dempster & Stebbins | Borrego bedstraw | Rubiaceae
|
| GAANF | Galium angustifolium Nutt. ex Gray ssp. foliosum (Hilend & Howell) Dempster & Stebbins | narrowleaf bedstraw | Rubiaceae
|
| GAANG2 | Galium angustifolium Nutt. ex Gray ssp. gabrielense (Munz & Johnston) Dempster & Stebbins | San Antoinio Canyon bedstraw | Rubiaceae
|
| GAANG3 | Galium angustifolium Nutt. ex Gray ssp. gracillimum Dempster & Stebbins | slender bedstraw | Rubiaceae
|
| GAANJ | Galium angustifolium Nutt. ex Gray ssp. jacinticum Dempster & Stebbins | San Jacinto bedstraw | Rubiaceae
|
| GAANN | Galium angustifolium Nutt. ex Gray ssp. nudicaule Dempster & Stebbins | narrowleaf bedstraw | Rubiaceae
|
| GAANO | Galium angustifolium Nutt. ex Gray ssp. onycense (Dempster) Dempster & Stebbins | Onyx Peak bedstraw | Rubiaceae
|
| GAANB2 | Galium angustifolium Nutt. ex Gray var. bernardinum Hilend & Howell | Galium angustifolium ssp. angustifolium | Rubiaceae
|
| GAAND | Galium angustifolium Nutt. ex Gray var. diffusum Hilend & Howell | Galium angustifolium ssp. angustifolium | Rubiaceae
|
| GAANF2 | Galium angustifolium Nutt. ex Gray var. foliosum Hilend & Howell | Galium angustifolium ssp. foliosum | Rubiaceae
|
| GAANO2 | Galium angustifolium Nutt. ex Gray var. onycense Dempster | Galium angustifolium ssp. onycense | Rubiaceae
|
| GAANP2 | Galium angustifolium Nutt. ex Gray var. pinetorum Munz & Johnston | Galium johnstonii | Rubiaceae
|
| GAANS | Galium angustifolium Nutt. ex Gray var. siccatum (W. Wight) Hilend & Howell | Galium angustifolium ssp. angustifolium | Rubiaceae
|
| GAANS2 | Galium angustifolium Nutt. ex Gray var. subglabrum Jepson | Galium jepsonii | Rubiaceae
|
| GAANT | Galium angustifolium Nutt. ex Gray var. typicum Hilend & Howell | Galium angustifolium ssp. angustifolium | Rubiaceae
|
| GAAN2 | Galium angustifolium Nutt. ex Gray | narrowleaf bedstraw | Rubiaceae
|
| GAAPS | Galium aparine L. ssp. spurium (L.) Simonkai | Galium spurium | Rubiaceae
|
| GAAPE | Galium aparine L. var. echinospermum (Wallr.) Farw. | Galium aparine | Rubiaceae
|
| GAAPI | Galium aparine L. var. intermedium (Merr.) Briq. | Galium aparine | Rubiaceae
|
| GAAPM | Galium aparine L. var. minor Hook. | Galium aparine | Rubiaceae
|
| GAAPV | Galium aparine L. var. vaillantii (DC.) Koch | Galium aparine | Rubiaceae
|
| GAAP2 | Galium aparine L. | stickywilly | Rubiaceae
|
| GAAR6 | Galium arcuatum Wieg. | Galium bolanderi | Rubiaceae
|
| GAAR3 | Galium argense Dempster & Ehrend. | Argus bedstraw | Rubiaceae
|
| GAAR5 | Galium aristatum L. | awned bedstraw | Rubiaceae
|
| GAARP | Galium arkansanum Gray var. pubiflorum E.B. Sm. | Galium arkansanum | Rubiaceae
|
| GAAR4 | Galium arkansanum Gray | Arkansas bedstraw | Rubiaceae
|
| GAASA | Galium asperrimum Gray var. asperulum Gray | Galium mexicanum ssp. asperulum | Rubiaceae
|
| GAAS3 | Galium asperrimum Gray | Galium mexicanum ssp. asperrimum | Rubiaceae
|
| GAAS4 | Galium asperulum (Gray) Rydb. | Galium mexicanum ssp. asperulum | Rubiaceae
|
| GAAS2 | Galium asprellum Michx. | rough bedstraw | Rubiaceae
|
| GABE3 | Galium bermudense L. p.p. | Galium circaezans var. circaezans | Rubiaceae
|
| GABE3 | Galium bermudense L. p.p. | Galium pilosum var. pilosum | Rubiaceae
|
| GABI | Galium bifolium S. Wats. | twinleaf bedstraw | Rubiaceae
|
| GABLH | Galium bloomeri Gray var. hirsutum Gray | Galium multiflorum | Rubiaceae
|
| GABL | Galium bloomeri Gray | Galium multiflorum | Rubiaceae
|
| GABO | Galium bolanderi Gray | Bolander's bedstraw | Rubiaceae
|
| GABOS | Galium boreale L. ssp. septentrionale (Roemer & J.A. Schultes) Hara | Galium boreale | Rubiaceae
|
| GABOS2 | Galium boreale L. ssp. septentrionale (Roemer & J.A. Schultes) Iltis | Galium boreale | Rubiaceae
|
| GABOH | Galium boreale L. var. hyssopifolium (Hoffmann) DC. | Galium boreale | Rubiaceae
|
| GABOI | Galium boreale L. var. intermedium DC. | Galium boreale | Rubiaceae
|
| GABOL | Galium boreale L. var. linearifolium Rydb. | Galium boreale | Rubiaceae
|
| GABOS3 | Galium boreale L. var. scabrum DC. | Galium boreale | Rubiaceae
|
| GABOT | Galium boreale L. var. typicum G. Beck | Galium boreale | Rubiaceae
|
| GABO2 | Galium boreale L. | northern bedstraw | Rubiaceae
|
| GABO4 | Galium boreale sensu Walt., non L. | Galium circaezans var. circaezans | Rubiaceae
|
| GABR9 | Galium brachiatum Pursh | Galium triflorum | Rubiaceae
|
| GABR7 | Galium brachiatum sensu Muhl., non Pursh | Galium circaezans var. circaezans | Rubiaceae
|
| GABR8 | Galium brandegeei Gray p.p. | Galium trifidum ssp. subbiflorum | Rubiaceae
|
| GABR8 | Galium brandegeei Gray p.p. | Galium trifidum ssp. trifidum | Rubiaceae
|
| GABR6 | Galium brevipes Fern. & Wieg. | limestone swamp bedstraw | Rubiaceae
|
| GABU | Galium buxifolium Greene | box bedstraw | Rubiaceae
|
| GACAC | Galium californicum Hook. & Arn. ssp. californicum | California bedstraw | Rubiaceae
|
| GACAF | Galium californicum Hook. & Arn. ssp. flaccidum (Greene) Dempster & Stebbins | California bedstraw | Rubiaceae
|
| GACAL | Galium californicum Hook. & Arn. ssp. luciense Dempster & Stebbins | Cone Peak bedstraw | Rubiaceae
|
| GACAM | Galium californicum Hook. & Arn. ssp. maritimum Dempster & Stebbins | California bedstraw | Rubiaceae
|
| GACAM2 | Galium californicum Hook. & Arn. ssp. miguelense (Greene) Dempster & Stebbins | San Miguel Island bedstraw | Rubiaceae
|
| GACAP | Galium californicum Hook. & Arn. ssp. primum Dempster & Stebbins | California bedstraw | Rubiaceae
|
| GACAS | Galium californicum Hook. & Arn. ssp. sierrae Dempster & Stebbins | El Dorado bedstraw | Rubiaceae
|
| GACAC3 | Galium californicum Hook. & Arn. var. crebrifolium Nutt. | Galium californicum ssp. flaccidum | Rubiaceae
|
| GACAM3 | Galium californicum Hook. & Arn. var. miguelense (Greene) Jepson | Galium californicum ssp. miguelense | Rubiaceae
|
| GACAT2 | Galium californicum Hook. & Arn. var. texanum Torr. & Gray | Galium texense | Rubiaceae
|
| GACAT | Galium californicum Hook. & Arn. var. typicum Hilend & Howell | Galium californicum ssp. flaccidum | Rubiaceae
|
| GACA3 | Galium californicum Hook. & Arn. | California bedstraw | Rubiaceae
|
| GACA9 | Galium carolinianum F.G. Dietr. | Galium hispidulum | Rubiaceae
|
| GACAA | Galium catalinense Gray ssp. acrispum Dempster | Santa Clemente Island bedstraw | Rubiaceae
|
| GACAC2 | Galium catalinense Gray ssp. catalinense | Santa Catalina Island bedstraw | Rubiaceae
|
| GACAB | Galium catalinense Gray var. buxifolium (Greene) Dempster | Galium buxifolium | Rubiaceae
|
| GACA4 | Galium catalinense Gray | Santa Catalina Island bedstraw | Rubiaceae
|
| GACH | Galium chartaceum Wight | Galium muricatum | Rubiaceae
|
| GACI3 | Galium circaeoides Roemer & J.A. Schultes | Galium circaezans var. circaezans | Rubiaceae
|