Comprehensive Description

provided by North American Flora
Tauschia madrensis Coult. & Rose, Proc. Wash. Acad 1: 138. 1900.
Tauschia Nelsoni Coult. & Rose, Proc. Wash. Acad. 1: 138. 1900.
Acaulescent or short-caulescent, ascending or erect from a stout taproot, 8-30 cm. high, the foliage and inflorescence puberulent; leaves oblong in general outline, excluding the petioles 2-9 cm. long, 1.5-3 cm. broad, pinnate, the leaflets ovate, many, mostly opposite, 5-15 mm. long, 1-2-pinnately lobed, the divisions oblong or linear, callous-tipped, 2-5 mm. long; petioles 2-6 cm. long; peduncles 0.8-2 dm. long, puberulent at the summit; involucre wanting, or of a solitary scarious bract; involucel of several linear to ovate, entire or lobed bractlets, 2-5 mm. long, about equaling the flowers but shorter than the fruit; fertile rays 3-8, stout, unequal, 8-15 mm. long, puberulent; pedicels about 3 mm. long; calyx-teeth minute; flowers yellow; styles short, spreading; carpophore 2-cIeft about one-third of its length, the halves divergent at the very tip, forming a short Y; fruit ovoid, tapering slightly at the apex, 5-7 mm. long, 4-5 mm. broad, with a V-shaped depression at the commissure; the ribs prominent, acute; oil-tubes small, 2-5 in the intervals, about 6 on the commissure; seed-face deeply sulcate.
Type locality: "Swampy meadows on the top of the west range of the Sierra Madre near Santa Gertrudis," Nayarit. Rose 2103.
Distribution: Coahuila and Nuevo Le6n to Durango and Nayarit (Palmer 386, Pennell 17 ,124).
bibliographic citation
Albert Charles Smith, Mildred Esther Mathias, Lincoln Constance, Harold William Rickett. 1944-1945. UMBELLALES and CORNALES. North American flora. vol 28B. New York Botanical Garden, New York, NY
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