Large white flowers rising on leafless stems from a rosette of basal leaves. Flowers are fragrant, white fading to pink, each flower lasting one day. We measured flowers to 7.5 cm in diameter. Leaves are oblanceolate, irregularly toothed, hairy on top side and margins, a few hairs on the central nerve on the leaf bottom. Longest leaf was measured at 13 cm long (including petiole), and 2 cm wide.

Flower stems to 10 cm in height.

Uncommon, listed as an S3 by the Saskatchewan Conservation Data Centre. Its habitat is clay hillsides and badlands in southern Saskatchewan.

I have grown these from seed and planted them in my rock garden. Terribly invasive (rhizomatous) in my garden, had to quit growing it. I've been told it's better behaved in gardens with heavy clay soils.

Photos taken May 13th, clay hills in the Buffalo Grass Eco Reserve, 200 km southeast of our home in Regina, SK.