This section is from the book "Wild Flowers Of The North American Mountains", by Julia W. Henshaw. Also available from Amazon: Wild Flowers of the North American Mountains.
Stems: cespitose, creeping, very leafy; flowering stems erect. Leaves: trifoliolate, persistent: leaflets deeply lobed. Flowers: in short terminal racemes: calyx-lobes ovate, acute, equalling the tube: petals obovate.
A lovely trailing plant, its flowers growing to an average height of four inches, in elongated heads, each individual tiny blossom having six white petals and a number of yellow stamens. The leaves grow close to the ground, resembling a large moss, and are deeply fringed and fern-like. The shoots of the plant run along the ground; the stems of the flowers are brittle and woody.
 
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