Gahnia aspera Red-berried Saw-sedge, Rough Saw-sedge, Saw Grass, Saw Sedge, Short Saw-sedge
Gahnia sieberiana Red-fruited Saw-sedge, Sword Grass
Galium gaudichaudii subsp. parviflorum Rough Bedstraw
Galium leptogonium -
Gamochaeta calviceps Cudweed (*)
Gamochaeta pensylvanica Cudweed (*)
Gastrodia sesamoides Bell Orchid, Cinnamon Bells, Common Potato Orchid
Genoplesium archeri Elfin Midge Orchid, Variable Midge Orchid
Genoplesium fimbriatum Fringed Midge Orchid
Genoplesium rufum Red Midge Orchid, Rufous Midge Orchid
Genoplesium sagittiferum Horned Midge Orchid
Genoplesium sigmoideum Dave's Creek Midge Orchid (NT)
Geranium molle Cranesbill Geranium, Dove's-foot Cranesbill (*)
Geranium neglectum Red-stemmed Crane's-bill, Swamp Crane's-bill, White Geranium
Geranium solanderi var. solanderi Austral Crane's-bill, Native Geranium
Glandularia aristigera Mayne's Pest (*)
Glossodia major Parson-in-the-Pulpit, Wax Lip Orchid
Glossodia minor Small Wax Lip Orchid
Glyceria maxima Reed Sweetgrass, Water Meadow-grass (*)
Glycine clandestina var. sericea Twining Glycine
Glycine tabacina Glycine Pea, Vanilla Glycine, Variable Glycine
Gomphocarpus fruticosus Arghel, Balloon Cottons, Cape Cotton, Cotton Bush, Duck Bush, Milk Weed, Narrow-leaved Cotton-bush, Swan Plant, Wild Cotton, Wild Cotton-bush (*)
Gompholobium aspalathoides -
Gompholobium latifolium Broad Wedge-pea, Golden Glory-pea
Gompholobium uncinatum Red Wedge-pea
Gonocarpus elatus Hill Raspwort
Gonocarpus micranthus subsp. ramosissimus Branching Raspwort, Creeping Raspwort, Red Raspwort
Gonocarpus oreophilus Mountain Raspwort
Gonocarpus tetragynus Common Raspwort, Poverty Raspwort
Gonocarpus teucrioides Germander Raspwort
Goodenia bellidifolia subsp. argentea Daisy Goodenia
Goodenia glabra Smooth Goodenia
Goodenia hederacea subsp. hederacea Forest Goodenia, Ivy Goodenia, Ivy-leaved Goodenia
Goodenia macbarronii Narrow Goodenia, Swamp Goodenia
Gratiola peruviana Austral Brooklime
Grevillea juniperina subsp. allojohnsonii Prickly Grevillea
Grevillea viridiflava Linear-leaf Grevillea, Narrow-leaved Grevillea, Narrow-leaved Spider Flower
Guilleminea densa Small Matweed (*)
Guizotia abyssinica Niger Plant, Niger Seed, Rantil (*)
Gynochthodes jasminoides Jasmine Morinda, Sweet Morinda
Gypsophila australis Annual Chalkwort
