La liste des espèces de plantes menacées en Australie ci-dessous comprend toutes les espèces végétales énumérées comme gravement menacées ou en danger critique d'extinction en Australie selon l’Environment Protection and Biodiversity Conservation Act 1999.
| Espèce | Nom commun anglais | Localisation(s) |
|---|---|---|
| Abutilon julianae | Norfolk Island Abutilon | Île Norfolk |
| Acacia sp. Graveside Gorge (V.J.Levitzke 806) NT Herbarium | NT | |
| Achyranthes arborescens | Chaff Tree, Soft-wood | Île Norfolk |
| Achyranthes margaretarum | Île Norfolk | |
| Arachnorchis actensis | Canberra Spider-orchid | ACT |
| Argentipallium spiceri | Spicer's Everlasting | TAS |
| Arthrochilus huntianus subsp. nothofagicola | Myrtle Elbow Orchid | TAS |
| Asplenium listeri | Christmas Island Spleenwort | Île Christmas |
| Barbarea australis | Native Wintercress | TAS |
| Boehmeria australis var. australis | Tree Nettle, Nettletree | Île Norfolk |
| Caladenia anthracina | Black-tipped Spider-orchid | TAS |
| Caladenia campbellii | Thick-stem Caladenia | TAS |
| Caladenia dienema | Windswept Spider-orchid | TAS |
| Caladenia lindleyana | Lindley's Spider-orchid | TAS |
| Caladenia pallida | Rosy Spider-orchid, Pale Spider-orchid, Summer Spider-orchid | TAS |
| Caladenia saggicola | Sagg Spider-orchid | TAS |
| Caladenia sp. aff. venusta | Kilsyth South Spider-orchid[1] | VIC |
| Caladenia sylvicola | Forest Fingers | TAS |
| Caladenia tonellii | Robust Fingers | TAS |
| Calystegia affinis | NSW | |
| Clematis dubia | Île Norfolk | |
| Corunastylis ectopa | Brindabella Midge-orchid, Ectopic Midge-orchid | ACT |
| Eidothea hardeniana | Nightcap Oak | NSW |
| Elatostema montanum | Mountain Procris | Île Norfolk |
| Elymus multiflorus var. kingianus | Phillip Island Wheat-grass | ACT, NSW |
| Epacris barbata | Bearded Heath, Freycinet Heath | TAS |
| Epacris limbata | Border Heath | TAS |
| Epacris stuartii | Stuart's Heath | TAS |
| Euphorbia norfolkiana | , Norfolk Island Euphorbia | Île Norfolk |
| Euphrasia fragosa | Shy Eyebright, Southport Eyebright | TAS |
| Euphrasia gibbsiae subsp. psilantherea | TAS | |
| Genoplesium firthii | Firth's Midge-orchid | TAS |
| Gyrostemon reticulatus | Net-veined Gyrostemon | WA |
| Haloragis platycarpa | Broad-fruited Haloragis | WA |
| Hibiscus insularis | Phillip Island Hibiscus | Île Norfolk |
| Hydatella leptogyne | Few-flowered Hydatella | WA |
| Lomatia tasmanica | King's Lomatia | TAS |
| Melicytus latifolius | Norfolk Island Mahoe | Île Norfolk |
| Meryta latifolia | Shade Tree, Broad-leaved Meryta | Île Norfolk |
| Muehlenbeckia horrida subsp. abdita | Remote Thorny Lignum | WA |
| Myoporum obscurum | Popwood, Sandalwood, Bastard Ironwood | Île Norfolk |
| Persoonia pauciflora | North Rothbury Persoonia | NSW |
| Phebalium daviesii | Davies' Waxflower, St Helens Waxflower | TAS |
| Philotheca freyciana | Freycinet Waxflower | TAS |
| Phreatia limenophylax | Norfolk Island Phreatia | Île Norfolk |
| Pimelea spinescens subsp. spinescens | Plains Rice-flower, Spiny Rice-flower, Prickly Pimelea | VIC |
| Pneumatopteris truncata | Île Christmas | |
| Prasophyllum castaneum | Chestnut Leek-orchid | TAS |
| Prasophyllum favonium | Western Leek-orchid | TAS |
| Prasophyllum milfordense | Milford Leek-orchid | TAS |
| Prasophyllum olidum | Pungent Leek-orchid | TAS |
| Prasophyllum perangustum | Knocklofty Leek-orchid | TAS |
| Prasophyllum pulchellum | Pretty Leek-orchid | TAS |
| Prasophyllum robustum | Robust Leek-orchid | TAS |
| Prasophyllum stellatum | Ben Lomond Leek-orchid | TAS |
| Pterostylis commutata | Midland Greenhood | TAS |
| Pterostylis wapstrarum | Fleshy Greenhood | TAS |
| Pultenaea sp. Genowlan Point | Genowlan Point Pultenaea | NSW |
| Sagina diemensis | Pearlwort | TAS |
| Tetratheca gunnii | Shy Susan | TAS |
| Thelymitra jonesii | Sky-blue Sun-orchid | TAS |
| Wikstroemia australis | Kurrajong | Île Norfolk |