【双歧杆菌属】
双歧杆菌属（学名：Bifidobacterium）为双歧杆菌目双歧杆菌科的一属革兰氏阳性菌。此属的模式种为两歧双歧杆菌(Bifidobacterium bifidum)。
==下属物种==
本属包括以下物种：
* Bifidobacterium actinocoloniiforme Killer et al. 2011
* 青春双歧杆菌 Bifidobacterium adolescentis Reuter, 1963
* Bifidobacterium aemilianum Alberoni et al. 2019
* Bifidobacterium aerophilum Michelini et al. 2017
* Bifidobacterium aesculapii Modesto et al. 2014
* Bifidobacterium angulatum Scardovi and Crociani 1974
* Bifidobacterium animalis (Mitsuoka 1969) Scardovi and Trovatelli 1974
* Bifidobacterium anseris Lugli et al. 2018
* Bifidobacterium apri Pechar et al. 2017
* Bifidobacterium aquikefiri Laureys et al. 2016
* Bifidobacterium asteroides Scardovi and Trovatelli 1969
* Bifidobacterium avesanii Michelini et al. 2019
* Bifidobacterium biavatii Endo et al. 2012
* 两歧双歧杆菌 Bifidobacterium bifidum (Tissier 1900) Orla-Jensen 1924，双岐双岐杆菌
* Bifidobacterium bohemicum Killer et al. 2011
* Bifidobacterium bombi Killer et al. 2009
* Bifidobacterium boum Scardovi et al. 1979
* 短双岐杆菌 Bifidobacterium breve Reuter 1963
* Bifidobacterium callimiconis Duranti et al. 2019
* Bifidobacterium callitrichidarum Modesto et al. 2018
* Bifidobacterium callitrichos Endo et al. 2012
* 犬双歧杆菌 Bifidobacterium canis Neuzil-Bunesova et al. 2020
* Bifidobacterium castoris Duranti et al. 2019
* Bifidobacterium catenulatum Scardovi and Crociani 1974
* Bifidobacterium catulorum Modesto et al. 2018
* Bifidobacterium cebidarum Duranti et al. 2020
* Bifidobacterium choerinum Scardovi et al. 1979
* Bifidobacterium choloepi Modesto et al. 2020
* Bifidobacterium commune Praet et al. 2015
* Bifidobacterium coryneforme (ex Scardovi and Trovatelli 1969) Biavati et al. 1982，异名
* Bifidobacterium criceti Lugli et al. 2018
* Bifidobacterium crudilactis Delcenserie et al. 2013
* Bifidobacterium cuniculi Scardovi et al. 1979
* Bifidobacterium denticolens Crociani et al. 1996
* 齿双歧杆菌 Bifidobacterium dentium Scardovi and Crociani 1974
* Bifidobacterium dolichotidis Duranti et al. 2019
* Bifidobacterium erythrocebi Neuzil-Bunesova et al. 2021
* Bifidobacterium eulemuris Michelini et al. 2016
* Bifidobacterium faecale Choi et al. 2014
* Bifidobacterium felsineum Modesto et al. 2020
* Bifidobacterium gallicum Lauer 1990
* Bifidobacterium gallinarum Watabe et al. 1983
* Bifidobacterium globosum (ex Scardovi et al. 1969) Biavati et al. 1982
* Bifidobacterium goeldii Duranti et al. 2019
* Bifidobacterium hapali Michelini et al. 2016
* Bifidobacterium imperatoris Lugli et al. 2018
* Bifidobacterium indicum Scardovi and Trovatelli 1969
* 婴儿双歧杆菌 Bifidobacterium infantis Reuter 1963，异名
* Bifidobacterium inopinatum Crociani et al. 1996，异名
* 意大利双歧杆菌 Bifidobacterium italicum Lugli et al. 2018
* Bifidobacterium jacchi Modesto et al. 2019
* Bifidobacterium kashiwanohense Morita et al. 2011，异名
* Bifidobacterium lactis Meile et al. 1997，异名
* Bifidobacterium lemurum Modesto et al. 2015
* Bifidobacterium leontopitheci Duranti et al. 2020
* 长双歧杆菌 Bifidobacterium longum Reuter 1963，俗名 比菲德氏龙根菌，简称 龙根菌
* Bifidobacterium magnum Scardovi and Zani 1974
* Bifidobacterium margollesii Lugli et al. 2018
* Bifidobacterium merycicum Biavati and Mattarelli 1991
* 小双歧杆菌 Bifidobacterium minimum Biavati et al. 1982
* Bifidobacterium mongoliense Watanabe et al. 2009
* Bifidobacterium moraviense Neuzil-Bunesova et al. 2021
* Bifidobacterium moukalabense Tsuchida et al. 2014
* Bifidobacterium myosotis Michelini et al. 2016
* Bifidobacterium oedipodis Neuzil-Bunesova et al. 2021
* Bifidobacterium olomucense Neuzil-Bunesova et al. 2021
* Bifidobacterium panos Neuzil-Bunesova et al. 2021
* Bifidobacterium parmae Lugli et al. 2018
* Bifidobacterium porcinum (Zhu et al. 2003) Nouioui et al. 2018
* Bifidobacterium primatium Modesto et al. 2020
* Bifidobacterium pseudocatenulatum Scardovi et al. 1979
* Bifidobacterium pseudolongum Mitsuoka 1969
* Bifidobacterium psychraerophilum Simpson et al. 2004
* Bifidobacterium pullorum Trovatelli et al. 1974
* Bifidobacterium ramosum Michelini et al. 2017
* Bifidobacterium reuteri Endo et al. 2012
* Bifidobacterium ruminantium Biavati and Mattarelli 1991
* Bifidobacterium saeculare Biavati et al. 1992，异名
* Bifidobacterium saguini Endo et al. 2012
* Bifidobacterium samirii Duranti et al. 2019
* Bifidobacterium scaligerum Modesto et al. 2020
* 斯卡尔多维双歧杆菌 Bifidobacterium scardovii Hoyles et al. 2002
* Bifidobacterium simiarum Modesto et al. 2020
* Bifidobacterium stellenboschense Endo et al. 2012
* Bifidobacterium stercoris Kim et al. 2010，异名
* Bifidobacterium subtile Biavati et al. 1982
* 猪双歧杆菌 Bifidobacterium suis Matteuzzi et al. 1971，异名
* Bifidobacterium thermacidophilum Dong et al. 2000
* Bifidobacterium thermophilium Mitsuoka 1969，拼写错误
* Bifidobacterium thermophilum corrig. Mitsuoka 1969
* Bifidobacterium tibiigranuli Eckel et al. 2020，拼写错误
* Bifidobacterium tissieri corrig. Michelini et al. 2016
* Bifidobacterium tissierii Michelini et al. 2016
* Bifidobacterium tsurumiense Okamoto et al. 2008
* Bifidobacterium vansinderenii Duranti et al. 2017
* Bifidobacterium xylocopae Alberoni et al. 2019
==参考文献==
* LPSN - List of Prokaryotic names with Standing in Nomenclature