An ornamental though very prickly shrub, in moist rich woods throughout the region, sparingly in the Rockies, west of the divide, but very abundant in the Selkirks where it frequently forms dense impenetrable thickets, flowering in early summer. [Illustration: Echinopanax horridum (Smith) Dec. & Planch. (½ Nat.) Devil’s Club.] APIACEÆ _Celery Family_ Herbs with alternate, compound or simple leaves; flowers small, white, yellow or purple in compound flat heads; fruit dry, usually of two flattened carpels. Stems 1—2 feet high. Leaves pinnately or ternately compound, cut into fine divisions. Flowers yellow or white; not purple. =Lomatium.= Flowers purple. =Leptotænia.= Leaves simple or 3-lobed; flowers yellow. =Zizia.= Stems 2—3 feet high; leaves ternate. =Ligusticum.= Stems 4—8 feet high, soft-hairy. Leaves ternately divided; flowers white. =Heracleum.= [Sidenote: =Lomatium macrocarpum= (Nutt.) C. and R. _Large-seeded Parsley._] Nearly stemless, 4—24 inches high, more or less hairy, much branched at the base from an elongated thick root. Leaves pinnately compound, segments pinnately-incised, on rather short petioles, purplish at the base; flowers white or pinkish in a somewhat equally 3—10-rayed umbel; rays 1—4 inches long. In dry stony ground throughout the Rockies, very abundant on the lower ridges in the vicinity of Banff; flowering in early June. [Sidenote: =Lomatum triternatum= (Pursh). C. and R. _Narrow-leaved Parsley._] Purplish at the base, with or without stems, 1—2 feet high, slightly hairy. Leaves twice or thrice ternate, the leaflets narrowly linear, 2—4 inches long. Flowers small, deep yellow in an unequal umbel of 5—18 rays, with slender bracts. Through the Rockies on dry ridges and grassy slopes; flowering in early June. [Sidenote: =Leptotænia multifida= Nutt. _Cut-leaved Parsley._] Stems 1—3 feet high, very leafy at the base, from a large fleshy rootstock. Leaves ternate or thrice pinnate, segments very finely cut. Flowers small, brownish-purple in nearly equal 8—20 rayed, rounded umbels, 3—4 inches in diameter, usually without an involucre. A most striking plant from its beautifully dissected leaves and rather large heads of rich brownish-purple flowers blossoming in June; on grassy slopes of Stony Squaw, Banff. [Sidenote: =Zizia cordata= (Walt.) Koch. _Heart-leaved Alexanders._] Stout, erect, branched, and smooth or somewhat hairy, 1—2 feet high. Basal and lower leaves long-petioled, broadly ovate or orbicular, undivided, deeply cordate at the base, 1—3 inches long, crenate; stem leaves short-petioled, ternate, the segments ovate or oval, crenate or lobed. Flowers small, bright yellow, in nearly flat 7—16 rayed umbels, 1—2 inches in diameter. Common on the eastern slopes and foothills of the Rockies; flowering in May and early June.