Alpine clover, whiproot clover
Montana, Wyoming and the Four Corners States
Open slopes and rocky areas, in the subalpine and alpine zones
Divided into 3 lanceolate leaflets, up to 1.5 inches long
The large, outer petal (the banner) of trifolium dasyphyllum flowers varies in color from purple to light pink (most common) to almost white, while the inner keel and wings petals are generally darker. The banner is rounded at the top. Flowers are supported by a somewhat hairy calyx, extending into long, narrow, pointed lobes; longer than the fused part.
Flower clusters typically contain between 5 and 30 heads, held in a compact, spherical arrangement, on hairy, leafless stems rising a few inches above the trifoliate leaves. Stems are thick but short; this is a high elevation species, generally found growing above the treeline in exposed, rocky areas; it can form quite extensive mats.