Idaho Wild Lovage

Ligusticum verticillatum (Geyer) Coult. & Rose; Rose, Contr. U. S. Nat. Herb. 3: 320. 1895.
Angelica ? verlicillata Geyer; Hook. Lond. Jour. Bot. 6: 233. 1847.
Stout, caulescent, freely branched, 6-12 dm. high, glabrous throughout or the inflorescence puberulent or roughened; leaves ovate in general outline, excluding the petioles about 5 dm. long, 1-2-ternate-pinnate, the leaflets ovate to oblong, acute at the apex, distinct, 3-S cm. long, 2-5 cm. broad, serrate to somewhat lobed; cauline leaves like the basal; peduncles alternate or verticillate, 1.5-4 cm. long; involucre wanting, or of 1-several linear, deciduous bracts; involucel of several linear bractlets, 3-5 mm. long; rays 25-30, ascending, unequal, 4-7 cm. long; pedicels ascending, 5-11 mm. long; flowers white; fruit oval, 4-6 mm. long, 3-4 mm. broad, slightly compressed laterally, the ribs narrowly winged; oil-tubes 3 or 4 in the intervals, 6-8 on the commissure; seed flattened laterally in cross section, the face plane to slightly concave.
Type locality: "Shady grassy borders of pine woods, on high plains of the Nez Perces Indians," Idaho, Geyer 414.
Distribution: Northern Montana and Idaho {Constance, Beetle &■ Ownbey 2732, Heller ir Heller 3453).