Angelica arguta Nutt. ex Torr. & Gray

Angelica arguta Nutt. ; T. & G. Fl. N. Am. 1 : 620. 1840
Angelica Lyallii S. Wats. Proc. Am. Acad. 17: 374. 1882. Angelica Piperi Rydb. Fl. Rocky Mts. 631. 1917.
Stout, 5-20 dm. high, the foliage and inflorescence glabrous to scaberulous; leaves ovate to orbicular in general outline, excluding the petioles 1.5-3 dm. long, 1.5-2 dm. broad, bipinnate or ternate-pinnate or rarely simply pinnate, the leaflets ovate to lanceolate, acute, sessile or petiolulate, 5-15 cm. long, 2-5 cm. broad, spinulose-serrate; petioles 1-3 cm. long, sheathing at the base; cauline leaves similar, reduced upwards, with dilated sheaths, the uppermost often bladeless, the uppermost petioles wholly sheathing; peduncles stout, 8-25 cm. long; involucre wanting; involucel wanting or occasionally of a few filiform bractlets; rays numerous, 18-45, spreading-ascending, subequal, 1-8 cm. long, webbed; pedicels 2-10 mm. long, spreadingascending, conspicuously webbed; flowers white or pinkish, the petals obovate, glabrous; ovaries glabrous; stylopodium low-conic; fruit oval to orbicular or obovoid, 4-7 mm. long, 4-5 mm. broad, glabrous, the dorsal ribs narrowly winged, the lateral broader than the dorsal and about equaling the body ; oil-tubes solitary in the intervals, several on the commissure ; seed-face plane.
Type locality: "Wappatoo Island. Oregon, and near Fort Vancouver, Washington." NtMall. Distribution: Alberta to Montana and Wyoming, west to British Columbia, south to Utah and northern California (Leiberg 1333, Thompson 7736, Nelson b° Nelson 6579).