Arracacia compacta Rose

Arracacia compacta Rose, Contr. U. S. Nat. Herb. 13:311. 1911
Stout, caulescent, branching, woody below, 1-2 m. high, the foliage hispidulous and the inflorescence puberulent; leaves ovate-deltoid in general outline, excluding the petioles 2-3.5 dm. long, 3-ternate or 3-ternate-pinnate, the leaflets lanceolate, acute at the apex, rounded or cuneate at the base, sessile or short-petiolulate, 2-5 cm. long, 1-1.5 cm. broad, sharply doubly serrate and often lobed toward the base, hispidulous beneath and on the rachis, and at least puberulent on the veins above; petioles 20-25 cm. long, sheathing at the base; cauline leaves greatly reduced upwards, with short, dilated sheaths; inflorescence branching, the peduncles short and stout, 3-6 cm. long; involucre wanting; involucel of a few linear bractlets, 4-5 mm. long, shorter than the flowers and fruit; rays numerous, short, stout, spreading and forming large, compact, globose umbels, 1-1.5 cm. long; pedicels very short, spreading-ascending, 1-4 mm. long, puberulent; flowers purplish, the petals obovate; stylopodium indistinct and depressed, the styles slender, spreading; carpophore 2-cleft to the base, the halves lax and twisting; fruit oblong-oval, abundant, 8-14 mm. long, 4-6 mm. broad, glabrous, tapering slightly at the apex, the ribs very prominent, acute; oil-tubes large, solitary in the intervals, solitary under each rib, 2-4 on the commissure; seed channeled under the tubes, the face deeply sulcate.
Type locality: "On Cerro de Chicamole," Puebla. Purpus 4110. Distribution: High mountains of Puebla {Pringle 6S57 , Purpus 4109).