Salmonflower Biscuitroot

Lomatium salmoniflorum (Coult. & Rose) Math. & Const Bull. Torrey Club 69: 246. 1942.
Peucedanum salmoniflorum Coult. & Rose; Holz. Contr. U. S. Nat. Herb. 3: 228. 1895. Leptotaenia salmonifiora Coult. & Rose, Contr. U. S. Nat. Herb. 7: 201. 1900.
Plants caulescent, 2-5 dm. high, from a stout thickened root, glabrous; leaves deltoid in general outline, excluding the petioles 1-3.5 dm. long, ternate, then 2-4-pinnate, the ultimate divisions filiform to linear, 1-7 mm. long, 0.5-1 mm. broad; petioles 5-15 cm. long, sheathing at the base; cauline leaves few, like the basal, short-petiolate with dilated sheaths; peduncles exceeding the leaves; involucel of a few filiform bractlets, shorter than the flowers, or wanting; rays 4—13, spreading, 1-6 cm. long, subequal; pedicels 2-14 mm. long, the umbellets 10-20flowered; flowers salmon-yellow; fruit oblong-oval, 10-14 mm. long, 5-6 mm. broad, glabrous, the wings much narrower than and homochromous with the body, slightly corky-thickened; oil-tubes solitary in the intervals, 2 on the commissure.
Type locality: "On basaltic rocks near upper ferry, Clearwater River above Lewiston, Nez Perce County," Idaho, Sandberg 24.
Distribution: Drainage svstem of the Snake River in northwestern Idaho and adjacent Washington and Oregon (Heller & Heller 3060, Piper 2781, 2782).

Lomatium salmoniflorum (salmonflower biscuitroot) is a perennial herb native to the northwest United States. In February and March one to nineteen umbels bloom, each with up to 300 flowers. Each flower is either strictly staminate or hermaphroditic. It has glabrous leaves that are deeply dissected into narrow blades.