Authors: Phil.
Tufted from a stout, branched rootstock, up to 12cm high in bloom, usually less. Leaves linear and grassy, 2-15cm long including a very long petiole. Flowers about 5mm wide, in racemes of six to twenty-five, spring. Chile and Argentina from the central southern cordillera and northern Andean Patagonia, in alpine and tundra steppe, rock crevices, feldmark and scree at sea level to 2200m depending upon the latitude. O.g. var. austroamericana has a tuft of hairs at each leaf tip; Andean southern Patagonia. Three grassy-leaved species of Sisymbrium grow in the same region and could be confused. In seed they are distinguished by their narrow, flattened siliculas to 2cm in length: S. castellarosi has winged seeds, S. onuridifolium has ciliate leaves and in S. patagonicum the sepals spread widely or reflex.
