Arracacia aegopodioides (Kunth) Coult. & Rose

Arracacia aegopodioides (H.B.K.) Coult. & Rose, Proc. Wash Acad. 1: 139. 1900.
Smyrnium aegopodioides H.B.K. Nov. Gen. & Sp. 5: 16. 1821.
Tauschia Coulteri A. Gray, Bost. Jour. Nat. Hist. 6: 211. 1850.
Mttseniopsis aegopodioides Coult. & Rose, Contr. U. S. Nat. Herb. 3: 302, as to reference, not as to
plant. 1895. Arracacia Coulteri Rose; Coult. & Rose, Contr. U. S. Nat. Herb. 3: 296. 1895.
Low, slender, caulescent, from a long fusiform root, 1-4 (or 6) dm. high, glabrous or the inflorescence puberulent; leaves deltoid to oblong-ovate in general outline, excluding the petioles 3-10 cm. long, 1-2-ternate, the leaflets oblong-lanceolate to ovate, more or less acute at the apex, rounded or cuneate at the base, 1-4 cm. long, 0.5-2 cm. broad, the terminal leaflet long-petiolulate, the lateral short-petiolulate to sessile, sharply serrate and often somewhat incised toward the base; petioles 2-12 cm. long, sheathing at the base; cauline leaves few, like the basal; inflorescence simple, the peduncles slender, 1-4 dm. long; involucre wanting, or of a single foliaceous bract; involucel of several filiform, entire bractlets, 3-7 mm. long; fertile rays 1-4 (or 10), slender, spreading-ascending, very unequal, 2-9 cm. long; fertile pedicels 1-9, slender, spreading, 5-12 mm. long; flowers yellow, the petals obovate; stylopodium low-conic, the styles short, recurved; carpophore 2-cleft to the base; fruit oblong-oval, 4—6 mm. long, 2-3 mm. broad, glabrous, tapering slightly at the apex, the ribs filiform but evident, acute; oil-tubes large, solitary in the intervals, 4 on the commissure; seed-face concave.
Type locality: "Crescit locis altis Regui Mexicani, propre Moran," Mexico. Humboldt c^ Bonpland.
Distribution: Hidalgo (Lyonnel 06, Pringle 6934).