ID,Major group,Family,Genus hybrid marker,Genus,Species hybrid marker,Species,Infraspecific rank,Infraspecific epithet,Authorship,Taxonomic status in TPL,Nomenclatural status from original data source,Confidence level,Source,Source id,IPNI id,Publication,Collation,Page,Date,Accepted ID tro-5101129,A,Cactaceae,,Mammillaria,,"similis",,"","Engelm.",Accepted,,M,TRO,5101129,,"Boston J. Nat. Hist.","5(2): 246","246","1845", tro-50205532,A,Cactaceae,,Mammillaria,,"similis",var.,"caespitosa","Engelm.",Synonym,,L,TRO,50205532,151698-2,"Boston J. Nat. Hist.","6(2): 200","200","1850",kew-2802166 kew-2877325,A,Cactaceae,,Mammillaria,,"similis",var.,"robustior","Engelm.",Synonym,,L,WCSP (in review),,,"Boston J. Nat. Hist.","6: 200","","1850",kew-2802166