Column name,Description id,Unique identifier automatically assigned to each row via auto-increment. ref_short,"Short citation for a reference. May be a journal article, grey literature, URL or other source." ref_type_id,"1= Research paper  2= Report (government, non-governmental organization) 3 = Printed flora or checklist 4= Online flora or checklist 5 = Online alien database 6 = Compiled for GloNAF from various sources 7 = Offline alien database 8 = Book" reference,Complete or nearly complete citation for a reference. Some online references did not provide author information. refset,"A value of ""1"" indicates that multiple related references for this region were treated as a single source (reference set) and combined into a single list (often a publication and personal communication with one of the authors). Columns ref1 through ref5 provide the id of the individual reference(s) that were used . " ref1,"If refset=1 , this column indicates the id in the reference table corresponding to the individual reference used in the reference set. " ref2,"If refset=1 , this column indicates the id in the reference table corresponding to the individual reference used in the reference set. " ref3,"If refset=1 , this column indicates the id in the reference table corresponding to the individual reference used in the reference set. " ref4,"If refset=1 , this column indicates the id in the reference table corresponding to the individual reference used in the reference set. " ref5,"If refset=1 , this column indicates the id in the reference table corresponding to the individual reference used in the reference set. "