Erigeron conyzoides

Slender, erect perennial (stems annual) to c. 1 m high, glabrous or with a few short hairs toward base, minutely glandular-pubescent below involucre; usually branched just below inflorescence. Leaves narrowly obovate, narrowly elliptic or oblong, 3–13 cm long, 3–12 mm wide, entire or the lowermost shallowly toothed, sometimes sparsely and minutely ciliate; margins often purplish. Inflorescence corymbose. Capitula c. hemispherical; involucral bracts linear, 3–6 mm long, minutely glandular-pubescent; ray florets 1–several-seriate, the outer with white ligules 1.5–3 mm long, more or less erect, shortly exceeding involucre. Cypselas flattened, obovate to oblong, c. 2 mm long, sparsely appressed-pubescent; pappus bristles c. uniform, 4.5–6.5 mm long. Flowers Jan.–Feb.