California Licorice Root

Ligusticum calif ornicum Coult. & Rose, Contr. U. S. Nat Herb. 7: 132. 1900.
Stout, caulescent, unbranched below the inflorescence, 5-9 dm. high, glabrous throughout ;
leaves ovate-deltoid in general outline, excluding the petioles 15-30 cm. long, 10-25 cm. broad,
bipinnate to ternate-pinnate, the leaflets ovate, mostly distinct, 2-4 cm. long, 1-2 cm. broad,
toothed or cleft into few, linear-oblong divisions; petioles 1-3 dm. long; cauline leaves few, like
the basal, the petioles narrow; peduncles alternate or occasionally verticillate, moderately
stout, 1-3 dm. long; involucre wanting; involucel of several linear bractlets, 3-5 mm. long,
shorter than the flowers and fruit; rays 9-20, spreading-ascending, 3-7 cm. long; pedicels
spreading-ascending, 5-11 mm. long; flowers white or pinkish; calyx-teeth minute; fruit oval,
4-6 mm. long, 2.5-3.5 mm. broad, slightly compressed laterally, the ribs narrowly winged;
oil-tubes several in the intervals and on the commissure; seed flattened dorsally in cross section,
the face concave.
Type locality: "Covelo," Mendocino County, California, Chesnut.
Distribution: Northern Coast Ranges of California (Tracy 3951, M. S. Baker 10,364).