Disphyma australe is a species of flowering plant in the family Aizoaceae and is endemic to New Zealand. It is a prostrate, succulent annual shrub or short-lived perennial plant with stems up to 2 m (6 ft 7 in) long, leaves that are three-sided in cross-section with a rounded lower angle, and white to deep pink daisy-like flowers with staminodes up to 30 mm (1.2 in) long.

| Kermadec ice plant | |
|---|---|
| Disphyma australe near Hāwera | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Aizoaceae |
| Subfamily: | Ruschioideae |
| Tribe: | Ruschieae |
| Genus: | Disphyma |
| Species: | D. australe |
| Binomial name | |
| Disphyma australe | |
New Zealand authorities recognise two subspecies of Disphyma australe:
Taxon identifiers | |
|---|---|
| Disphyma australe |
|
| Disphyma australe subsp. australe |
|
| Disphyma australe subsp. stricticaule |
|
| Mesembryanthemum australe |
|