▁to ▁be ▁a ▁native ▁of ▁the ▁eastern ▁and ▁central ▁parts ▁of ▁North ▁America . ▁It ▁natural ized ▁in ▁the ▁western ▁part ▁of ▁the ▁continent ▁as ▁well ▁as ▁in ▁E uras ia . ▁ ▁Gener ally , ▁L act uca ▁canad ensis ▁is ▁a ▁bien n ial ▁her b ▁in ▁the ▁da isy ▁family ▁growing ▁from ▁a ▁tap root ▁to ▁maximum ▁height s ▁of ▁ ▁or ▁more . ▁The ▁leaves ▁are ▁deeply ▁lo bed ▁and ▁occasionally ▁to oth ed . ▁The ▁top ▁of ▁the ▁stem ▁be ars ▁an ▁infl ores c ence ▁with ▁many ▁flower ▁heads , ▁each ▁up ▁to ▁ ▁wide ▁when ▁open . ▁The ▁heads ▁have ▁many ▁pale ▁yellow ▁ray ▁flor ets , ▁but ▁no ▁disc ▁flor ets . ▁The ▁fruit ▁is ▁a ▁dark - color ed ▁ach ene ▁about ▁half ▁a ▁cent imeter ▁( 0 . 2 ▁inches ) ▁long ▁with ▁a ▁white ▁p app us . ▁ ▁Description ▁Ann ual ▁bien n ial ▁dic ot ▁that ▁may ▁appear ▁to ▁be ▁a ▁we edy ▁plant , ▁but ▁is ▁variable ▁in ▁appearance . ▁Typ ically ▁it ▁is ▁ 7 . 6   cm - 2 0 . 3   cm ▁tall , ▁but ▁may ▁be ▁found ▁up ▁to ▁ 2 5 . 4   cm ▁and ▁ 7 . 6   cm ▁across ▁with ▁an ▁ob long ▁shape , ▁wider ▁at ▁bases , ▁and ▁come ▁to ▁point ▁at ▁tip . ▁St em ▁is ▁gl ab r ous ▁and ▁often ▁gla uc ous , ▁with ▁light ▁or ▁re dd ish ▁green ▁color .