lemon scented tarplant

General: Strongly lemon-scented annual, 1.5-6 dm. tall, covered with short, stiff hairs throughout and stalked glands upward.
Leaves: Leaves lanceolate to linear, 2-8 cm. long and 1.5-10 mm. wide, entire.
Flowers: Heads several in an open inflorescence, the lateral branches often topping the central; involucre 6-8 mm. high, ovoid, the bracts in a single series, equal, the flat tips of the bracts well developed, the lower portion clasping the ray achene; rays 5-8, 6-10 mm. long, pistillate and fertile, bright yellow; disk flowers sterile, yellow, surrounded by a cup of united bracts attached to the receptacle, which is covered with erect, straight hairs; pappus none.
Fruits: Achenes three-sided, one side rounded.