Ternate Desert Parsley (Biscuit Root)
Lomatium triternatum (Pursh) J. M. Coult. & Rose
Collected along the Clearwater River between the
mouth of the Potlatch River to just downstream of Pine Creek in Nez Perce Co.,
Idaho, on 6 May 1806.
Perennial herb growing to 2-2 1/ feet. The flowers are tiny, borne in the open, flat topped clusters of smaller round clusters blooming in April through July. The fruit are flattened, winged, seed-like schizocarps about 1/4 to 3/8 inch long. It has finely hairy, 1/2 to 4 inch long linear leaf segments, plus a whorl of bracts at the base of its yellow flower clusters.
The plant prefers light (sandy), medium (loamy) and heavy (clay) soils and requires well-drained soil. It cannot grow in the shade. It requires dry or moist soil. It is found on the foothill and mountain slopes of Idaho, Montana, and Wyoming.