| Gaillardia |
cabrerae, tontalensis |
| Galactia |
glaucophylla |
| Galinsoga |
urticifolia |
| Galium |
comberi, gracilicaule, lilloi, vile |
| Gallardoa |
fischeri |
| Gamochaeta |
ambatensis, antarctica, argentina, deserticola, longipedicellata, neuquensis, polybotrya |
| Gaultheria |
nubigena |
| Gavilea |
australis, gladysiae , patagonica, supralabellata, trullata, wittei |
| Gaya |
Kelleri, purpurea |
| Gelasine |
elongata |
| Gentiana |
oranensis |
| Gentianella |
bromifolia, cabrerae, claytonioides, cosmantha, fabrisii, hieronymi, kurtzii, multiflora, oranensis, parviflora, pulla, punensis, riojae, tubulosa |
| Geranium |
delphinifolium, leucanthum, parodii, planum, tafiense |
| Geum |
andicola, brevicarpellatum, riojense |
| Giliastrum |
castellanosii, foetidum |
| Glandularia |
aurantiaca, ballsii, cheitmaniana, crithmifolia, flava, glandulifera, hookeriana, lilloana, macrosperma, mendocina, parodii, perakii, radicata, tristachya, venturii |
| Glyceria |
saltensis |
| Gnaphalium |
andicola, antarcticum , cabrerae, glanduliferum, jujuyense, philippii, psilophyllum, tarapacanum, yalaense |
| Gochnatia |
glutinosa |
| Gomphrena |
cladotrichoides, colosacana, mendocina, pumila, radiata |
| Gonolobus |
hirtus |
| Grahamia |
bracteata |
| Grammosperma |
dusenii |
| Grindelia |
aegialitis, anethifolia, brachystephana, cabrerae, chacoënsis, coronensis, covasii, globularifolia, mendocina, patagonica, prostrata, pygmaea, ragonesei, ventanensis |
| Grisebachiella |
hieronymi |
| Guadua |
variegata |
| Guindilia |
cristata, dissecta |
| Gunnera |
reichei |
| Gutierrezia |
gilliesii, isernii, pulviniformis, repens, solbrigii, spathulata |
| Gymnocalycium |
albiareolatum, amerhauseri, andreae, angelae, baldianum, bayrianum, bodenbenderianum, bruchii, calochlorum, capillaense, castellanosii, erinaceum, gibbosum, hybopleurum, hyptiacanthum, intertextum, kieslingii, kroenleinii, kuehhasii, leptanthum, marsoneri, mazanense, mesopotamicum, monvillei, mostii , mucidum, neuhuberi, ochoterenae , oenanthemum, parvulum, platense, pugionacanthum, quehlianum, ragonesei, raineri, reductum, ritterianum, robustum, saglionis, schickendantzii, schroederianum, spegazzinii, stellatum , stuckertii, taningaense, uebelmannianum, valnicekianum |
| Gymnophyton |
polycephalum |
| Gymnopogon |
glaber, toldensis |
