Tauschia johnstoniana Mathias & Constance

Tauschia johnstoniana Math. & Const. Bull. Torrey
Club 70: 58. 1943.
Acaulescent, cespitose, 10-15 cm. high, the foliage and inflorescence scabrous or scaberulous; leaves oblong to ovate in general outline, excluding the petioles 2-6.5 cm. long, 2-4 cm. broad, pinnate to partially bipinnate, the leaflets linear, opposite, distinct, 5-40 mm. long, 1-1.5 mm. broad, entire, mucronate; petioles 3-5 cm. long, narrowly scarious-margined below; peduncles 7-9 cm. long, equaling to exceeding the leaves; involucre of 1 or 2 linear bracts; involucel of several linear bractlets, 1-5 mm. long, about equaling the flowers but shorter than the fruit; fertile rays 3-5, subequal, 10-15 mm. long, scaberulous; pedicels about 1 mm. long; flowers yellow; styles terete, slender, recurved; fruit oval, about 4 mm. long, 2-3 mm. broad, with a Y-shaped depression at the commissure, the ribs filiform; oil-tubes small, several in the intervals
and on the commissure; seed-face sulcate.
Type locality: "On mountain top 7 kilometers southwest of Miquihauana, Tamaulipas," Stanford, Retherford 6* Northcraft 682.
Distribution: Known only from the type locality.