▁in ▁various ▁orch ids ▁that ▁do ▁not ▁fall ▁under ▁the ▁Rh izo ct onia ▁um bre lla . ▁In ▁particular , ▁many ▁fully ▁my co h eter ot roph ic ▁orch ids ▁associate ▁with ▁e ct omy cor rh iz al ▁bas idi om yc etes ▁belonging ▁to ▁gener a ▁such ▁as ▁The le ph ora , ▁T oment ella ▁and ▁Russ ula . ▁ ▁Bas idi om yc etes ▁of ▁the ▁At ract i ell ales ▁ ▁As com yc ota ▁ ▁Though ▁rare ▁in ▁orch ids , ▁as com yc ete ▁associations ▁have ▁been ▁documented ▁in ▁several ▁orch id ▁species . ▁The ▁European ▁terrest rial ▁orch id ▁E pip act is ▁hel le bor ine ▁has ▁a ▁specific ▁association ▁with ▁e ct omy cor rh iz al ▁as com yc etes ▁in ▁the ▁T uber aceae . ▁ ▁Or ch id ▁my cor rh iza ▁nut ri ent ▁transport ▁▁ ▁Or ch ids ▁my cor rh iza ▁( OM ) ▁are ▁found ▁in ▁approximately ▁ 1 0 % ▁of ▁the ▁botan ical ▁divers ity ▁of ▁earth ▁and ▁have ▁unique ▁and ▁special ized ▁my cor rh iz al ▁nut ri ent ▁transfer ▁interactions ▁which ▁define ▁the ▁fit ness ▁and ▁divers ity ▁of ▁the ▁orch id ▁family . ▁Or ch id ▁my cor rh iz al ▁associations ▁involve ▁a ▁ple th ora ▁of ▁distinct ive ▁nut ri ent ▁transport ▁systems , ▁structures ▁and ▁phenomen on ▁which ▁have ▁only ▁been ▁observed ▁in ▁the ▁family ▁Or ch id aceae . ▁These ▁interactions ▁are ▁formed ▁between