Tufted and small colony-forming, spreading by short slender rhizomes. Leaves mostly basal, biternate or ternate-pinnate, composed of nine to nineteen leaflets, each one almost orbicular with a few large blunt teeth or small lobes. Flowering stems usually less than 10cm high, sometimes more, bearing simple racemes. Flowers with four green-flushed-purple, 3mm long sepals and several much longer pale violet filaments bearing large yellow anthers, summer. Circumpolar, and here and there on high mountains south, on rocky slopes and ledges usually where it is also moist. One of the smallest species, but though having dainty foliage, its appeal is largely to the plantsman.