▁Port land , ▁Oregon . ▁ ▁Oregon ▁Sen ators ▁Alan ▁B ates ▁and ▁Elizabeth ▁Ste iner - H ay ward ▁have ▁recently ▁expressed ▁concerns ▁per tain ing ▁to ▁the ▁Board ' s ▁reg ulation ▁of ▁the ▁practice ▁of ▁medicine . ▁ ▁In ▁at ▁least ▁one ▁instance , ▁concerns ▁have ▁been ▁raised ▁by ▁the ▁public ▁that ▁board ▁investig ators ▁may ▁be ▁manufact uring ▁alleg ations ▁against ▁medical ▁prov iders , ▁although ▁the ▁reasons ▁for ▁this ▁are ▁unclear . ▁ ▁References ▁ ▁External ▁links ▁Official ▁Website ▁Oregon ▁Blue ▁Book ▁ ▁Medical ▁Board ▁Category : 1 8 8 9 ▁establish ments ▁in ▁Oregon ▁Category : Med ical ▁lic ens ing ▁bo ards ▁in ▁the ▁United ▁States <0x0A> </s> ▁The ▁Mor r ison ▁Ar bor et um ▁is ▁an ▁ar bor et um ▁located ▁in ▁Mor r ison , ▁Oklahoma . ▁It ▁is ▁open ▁to ▁the ▁public ▁daily ▁without ▁charge . ▁ ▁The ▁ar bor et um ' s ▁plant ings ▁include ▁A cer ▁tr un cat um , ▁A es cul us ▁p avia , ▁Bet ula ▁n ig ra , ▁Cer cis ▁canad ensis , ▁C elt is ▁occident alis , ▁Ch ama ec y par is ▁no ot k at ensis , ▁Fra x inus ▁pen nsylvan ica , ▁G ink go ▁bil oba , ▁I lex ▁' N ell ie ▁R . ▁Stevens ', ▁Juni per us ▁vir gin iana , ▁Magn olia ▁grand if l ora , ▁Met ase qu o ia ▁g ly pt ost ro bo ides , ▁Mor us