Erigeron canadensis

  

Erigeron canadensis ( ) ( )

Asteraceae

  • Erect annual; stems simple below, paniculately branched above, 2-20 dm. tall; herbage hispid with scattered hairs or glabrous, usually dark or bright green; leaves linear to lanceolate, sessile or the lower leaves narrowed to a petiole, entire or toothed, 5-10 cm. long; heads 3-4 mm. high in a dense panicle; phyllaries scarious-margined, nearly glabrous; rays inconspicuous, white, toothed. Common weed in waste places, often abundant on floodlands and along streams. Throughout California at low altitudes; to eastern United States. It is not common in wet habitats, but as a wasteland weed it is to be expected on floodlands. "A Flora of the Marshes of California. Herbert L. Mason".

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