▁the ▁rural ▁local ity ▁( a ▁sel o ) ▁of ▁Priv ol zh ye . ▁Population : ▁ 2 4 , 0 0 5 ▁( 2 0 1 0 ▁Census ); ▁ ▁The ▁population ▁of ▁Priv ol zh ye ▁accounts ▁for ▁ 3 1 . 2 % ▁of ▁the ▁district ' s ▁total ▁population . ▁ ▁References ▁ ▁Notes ▁ ▁S ources ▁ ▁Category : D istrict s ▁of ▁Sam ara ▁O blast <0x0A> </s> ▁Bol ton ia ▁dec urr ens ▁is ▁a ▁rare ▁species ▁of ▁flow ering ▁plant ▁in ▁the ▁a ster ▁family ▁known ▁by ▁the ▁common ▁names ▁dec urrent ▁false ▁a ster ▁and ▁cl asp ing leaf ▁doll ' s ▁da isy . ▁It ▁is ▁native ▁to ▁the ▁flo od pla ins ▁along ▁the ▁Illinois ▁and ▁Mississippi ▁R ivers ▁in ▁the ▁United ▁States , ▁where ▁the ▁habitat ▁has ▁been ▁dr ast ically ▁alter ed , ▁leading ▁to ▁its ▁decl ine . ▁The ▁plant ▁was ▁once ▁distributed ▁across ▁ 4 0 0 ▁kilom eters ▁of ▁rivers ide ▁forest ▁from ▁La S alle , ▁Illinois , ▁to ▁St . ▁Louis , ▁Missouri . ▁As ▁the ▁rivers ▁and ▁rip arian ▁habitat ▁alongside ▁them ▁have ▁been ▁developed , ▁the ▁plant ' s ▁distribution ▁has ▁been ▁fragment ed ▁into ▁about ▁ 2 0 ▁separate ▁populations , ▁mostly ▁in ▁Illinois . ▁At ▁one ▁point ▁it ▁was ▁thought ▁to ▁have ▁been ▁ext ir p ated ▁from ▁Missouri , ▁but ▁a ▁few ▁populations ▁have ▁been ▁located ▁near ▁St . ▁Louis ▁since ▁the ▁mid - 1 9 8 0 s