Included here is sub-antarctic Chile and a series of associated islands including the Falkland Islands, South Georgia Islands, South Sandwich Islands, South Orkney Islands and South Shetland Islands.

Magellanic Steppe

The grassland plains are dominated by Festuca gracillima together with endemic grasses such as Agrypyron fuegianum (Poaceae) in the dryer areas and Alopecurus magellanicus, Deschampsia antarctica and D. kingii in the wetter areas. Among the frequent associates are various endemic or near endemic herbs such as Draba magellanica (Brassicaceae), Senecio magellanicus (Asteraceae), Silene magellanica (Caryophyllaceae) and Sisyrinchium patagonicum (Iridaceae), while endemics or near endemics such as Anagalis alternifolia (Primulaceae), Gentianella magellanica (Gentianaceae) and Gunnera magellanica (Gunneraceae) occupy the wetter grasslands. The area also includes saline grasslands dominated by the endemic or near endemic Puccinella biflora and P. magellanica (Poaceae) together with other endemics or near endemics like Chenopodium antarcticum (Chenopodiaceae), Colobanthus quitensis (Caryophyllaceae), Eriachaenium magellanicum (Asteraceae), Plantago barbatum (Plantaginaceae) and Suaeda argentinensis (Chenopodiaceae). Dominant scrub species are Lepidophyllum cupressiforme, Chiliotrichum diffusum and to a lesser extent Pernettya mucronata. The former is characteristic of coastal and some inland dune systems where it is often associated with shrubs such as Berberis buxifolia and Senecio patagonicus. The lower layers include endemics such as Berberis empetrifolia (Berberidaceae), Boopis australis (Calyceraceae), Descurainia antarctica (Brassicaceae) and Jaborosa magellanica (Solanaceae). 

Magellanic Maritime Tussock Grass

One of the most conspicuous coastal vegetation types on some of the islands is a giant tussock grass community dominated by Poa flabellata with some tussocks growing up to 3 m high.  In some of the more open areas, associated species include Alopecurus antarcticus and Poa antarctica and on the Falkland Islands the Falkland endemic Senecio littoralis (Asteraceae).

Falkland Island Grassland

Most of the Falkland Islands are covered with Whitegrass (Cortaderia pilosa) tussucks. These tussocks can grow up the 40 cm high, but are usually spaced out sufficiently to allow a number of associates to co-exist such as the Falkland endemics Chevreulia lycopodioides (Asteraceae) and Leucheria suaveolens (Asteraceae).

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