Dyssodia tagetiflora Lag.

Boebera tagetiflora (Lag.) Spreng. ' Syst. 3: 545. 1826
Dyssodia tagetiflora Lag. Gen. & Sp. Nov. 29. 1816.
Boebera fastigiata H. B. K. Nov. Gen. & Sp. 4: 198. 1820.
Dysodia appendiculata DC. Prodr. 5: 640, in part. 1836. Not D. appendiculata Lag. 1816.
A branched perennial, somewhat woody below; stems subterete, somewhat striate, sparingly pubescent, branched; leaves 2-5 cm. long, pinnatifid, with linear or linear-oblanceolate toothed segments, sparingly hirsute; lower leaves opposite, the upper alternate; heads terminating the branches, peduncled; peduncles 5-10 cm. long, bracteate; involucre turbinate, often purple-tinged, about 8 mm. high and broad; principal bracts about 8, oval, obtuse, thick and round-keeled on the back, sparingly pubescent; accessory bracts about the same number, slightly shorter, linear, acute, round-backed, sparingly pubescent ; ray-flowers 5-8 ; ligules suborbicular, 5-6 mm. long; disk-corollas 5 mm. long, puberulent; tube thick, about equaling and scarcely differentiated from the nearly cylindric throat; lobes triangular; achenes 4 mm. long, compressed, 3-4-angled, hirsute; pappus 4 mm. long.
Type locality: Nova Hispania [Mexico]. Distribution: Central Mexico.