Conioselinum scopulorum (A. Gray) Coult. & Rose

Conioselinum scopulorum (A. Gray) Coult. & Rose, Contr. U. S. Nat. Herb. 7: 151. 1900.
Ligusticum scopulorum A. Gray, Proc. Am. Acad. 7: 347. 1868. Conioselinum coloradense Osterhout, Muhlenbergia S: 36. 1909.
Rather slender, simple or sparingly branched, 3-10 dm. high; leaves lanceolate to ovate in general outline, excluding the petioles 10-20 cm. long, 5-15 cm. broad, 1-2-pinnate or 1-2ternate-pinnate, the leaflets ovate, 20-65 mm. long, 15-40 mm. broad, pinnately incised, the lobes mucronulate; petioles 1-2.5 dm. long; cauline leaves with broadly dilated sheaths, pinnate to ternate-pinnate; peduncles 3-24 cm. long; involucre of 1-several filiform bracts up to 1 cm. long, or wanting; involucel of several linear, acute, scarious-margined bractlets, often slightly connate at the base, 2-8 mm. long, a little shorter than the flowers; rays 10-20, subequal, 15-50 (75?) mm. long; pedicels 4-12 mm. long; fruit oval, 4-6 mm. long, 2-3 mm. broad, slightly compressed dorsally, the dorsal ribs low, unwinged, the lateral narrowly corky-winged; seed much flattened dorsally in cross section, the face plane to slightly concave.
Type locality: Santa Antonita, New Mexico, Bigelow.
Distribution: Rocky Mountains, Wyoming and Colorado to New Mexico and Arizona {Baker 895, Nelson 8701).

Conioselinum scopulorum, also commonly known as Rocky Mountain hemlockparsley or hemlock parsley, is a perennial herb found in parts of the Rocky Mountains from southern Montana to Arizona and New Mexico.

Flower cluster