Youngia japonica (L.) DC.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Polymorphic, subscapose annual 1–9 dm, scabrous or ± hairy toward the base; lvs mainly or all basal, mostly lyrate-pinnatifid, or subentire in small plants, up to ca 20 × 6 cm; heads small, numerous in a corymbiform or paniculiform infl; fls ca 10–20, the tube ca 1/4 as long as the ligule; invol 3.5–5 mm, glabrous, with 4 short outer and ca 8 longer inner bracts; achenes brownish, 1.5–2.5 mm; pappus 2.5–3.5 mm; 2n=16. Native to se. Asia, now a pantropical weed, and becoming common on the coastal plain in se. U.S., n. to Pa. (Crepis j.)
Asiatic hawk's beard