USA: AK , AZ , CA , CO , ID , IL , IN , KY , ME , MD , MA , MI , MN , MT , NV , NH , NJ , NM , NY , OR , PA , SD , TN , TX , UT , VT , VA , WA , WV , WI , WY , DC (NPIN, 2007)
Canada: NB , NS(NPIN, 2007)
Flowers It has large, robust upright heads. (Weatherbee, 2006) This plant is usually more or less glutinous (sticky) at least in the inflorescence and peduncles. Inflorescence is long and narrow to short and compact. The flower heads often have long pecuncles (stems). Flower bracts are imbricate (overlapping) and blunt. There are nromally 8 ray flowers and 13 disk flowers, all of which are yellow. (WTU, 2009) The appearance is of many small yellow flower heads in a narrow long cluster. (NPIN, 2007)
Leaves become smaller toward the tip of the stem. (Weatherbee, 2006) Basal leaves are oblanceolate to spatulate, toothed or nearly entire, and blunt or rounded. The cauline (stem) leaves are progressively reduced and few. (WTU, 2009) The largest leaves are at the base. (NPIN, 2007)
Stems are smooth. (Weatherbee, 2006) Never has rows of hairs on petioles. (WTU, 2009) Generally there are several stems in a clump. (NPIN, 2007)
Plant is 5-80 cm tall. (WTU, 2009)
Flowers The involucre (bracts subtending the flower) is 4-6 mm high. (WTU, 2009)
Leaves are up to 15 cm long including the petiole x 3 cm wide. (WTU, 2009)