Slimleaf Sneezeweed

Helenium linifolium Rydberg, sp. nov
A slender annual; stem about 3 dm. high, glabrous or nearly so, angled; leaves linear or narrowly linear-lanceolate, entire or sparingly dentate, rarely sinuately lobed, 4-6 cm. long, glabrous; heads corymbose; peduncles slender, 3-8 cm. long; involucral bracts 4-5 mm. long, lance-subulate; ray-flowers pistillate; ligules cuneate, 10-12 mm. long, 5-7 mm. wide, purplish with yellow tips, or yellow; disk purplish, 10-12 mm. broad; corollas about 2 mm. long, yellow with purple limb; tube very short; achenes 1 mm. long, hispid on the angles; squamellae ovate, with a long awn-tip, together fully three-fourths as long as the corolla.
Type collected at Kingsville, Texas, April 11, 1905, S. M. Tracy 8949 (herb. N. Y. Bot. Gard.). Distribution: Texas.