Canby's Wild Lovage

Ligusticum canbyi Coult. & Rose, Rev. N. Am
Umbell. 86. 1888.
Cynapium nudicaule Nutt.; T. & G. Fl. N. Am. 1: 641, as syn. 1840. Pimpinella apiodora var. nudicaulis A. Grav, Proc. Am. Acad. 8: 385. 1872. Ligusticum Leibergi Coult. & Rose, Contr. U. S. Nat. Herb. 7: 134. 1900. Ligusticum caeruleomontanum St. John, Fl. SK. Wash. 297. 1937.
Stout, caulescent, freely branched, 5-12 dm. high, the inflorescence puberulent or glabrate, the foliage scaberulous; leaves ovate-deltoid in general outline, excluding the petioles 6-20 cm. long, 6-15 cm. broad, ternate-pinnate, the leaflets lanceolate, mostly distinct, 3-5 cm. long, 5-20 mm. broad, laciniately cleft into linear, acute divisions; petioles 8-20 cm. long; cauline leaves few, like the basal, the petioles dilated ; peduncles alternate or verticillate, stout, 6-24 cm. long; involucre wanting or of a solitary linear bract; involucel of 1 -several linear bractlets, 2-5 mm. long, shorter than the flowers and fruit; rays 15-30, spreading-ascending, 2.5-5 cm. long; pedicels spreading-ascending, 5-10 mm. long; flowers white or pinkish; calyx-teeth minute; fruit oval to oblong, 4-5 mm. long, 2-3 mm. broad, slightly compressed laterally, the ribs narrowly winged; oil-tubes 4-6 in the intervals, 6-8 on the commissure; seed flattened dorsally in cross section, the face plane. Type locality: "Low grounds, near headwaters of Jocko River," Montana, Canby 155. Distribution: Western Montana and adjacent Idaho to central Washington (Constance el al. 1249, Leiberg 1009).