Tauschia seatoni

Tauschia seatoni Coult. & Rose, Proc. Wash Acad. 1: 136. 1900.
Arracacia nudicaulis Coult. & Rose; Seaton, Proc. Am. Acad. 28: 119. 1893. Not Tauschia nudicatilis Schlecht. 1834.
Slender, acaulescent, erect, 1-4 dm. high, glabrous except for the puberulent inflorescence; leaves oblong to ovate in general outline, excluding the petioles 3-7 cm. long, 1.5-4 cm. broad, pinnate, the leaflets ovate-deltoid at the base of the leaf, linear near the apex, distinct, sessile to petiolulate, 10-25 mm. long, 2-20 mm. broad, the basal deeply pinnatifid, the upper entire, all glaucous beneath; petioles slender, 2-8 cm. long; peduncles 7-30 cm. long; involucre wanting, or of an occasional filiform bract; involucel of a few filiform, entire bractlets, exceeding the flowers but mostly shorter than the fruit; fertile rays 3-6, slender, unequal, 15-50 mm. long, puberulent; pedicels 3-6 mm. long, puberulent; calyx-teeth minute; flowers white; styles slender, purplish, reflexed; carpophore 2-cleft to the base, the halves divergent for their apical third, forming a Y; fruit oblong-oval, tapering slightly at the apex, 3-3.5 mm. long, 1.5-2.5 mm. broad, the tips of the mericarps purplish, the ribs filiform; oil-tubes small, solitary in the intervals, usually 2 on the commissure; seed channeled under the tubes, the face concave or slightly sulcate.
Type locality: Pine woods, Mount Orizaba, Vera Cruz, Seaton 199. Distribution: Known only from Mount Orizaba (Pringle 8547. Purpus 7454).