Suite des liens
en Anglais ou Allemand
http://www.lohmueller.business.t-online.de/botany/gen/b/Begonia.htm
rhizomateux
http://begonias.com/rhizomatous_03.html
page traduite de la Royal Horticural Sociéty
http://translate.google.com/translate?hl=fr&sl=en&u=http://www.rhs.org.uk/Learning/publications/pubs/garden_98-00/pubs_journals_garden_1198_begonia.asp&sa=X&oi=translate&resnum=3&ct=result&prev=/search%3Fq%3DB.%2Bbowerae%2Bvar.%2Bnigramarga%2B%26hl%3Dfr%26lr%3D%26sa%3DG
site Allemand
http://translate.google.com/translate?hl=fr&sl=de&u=http://www.zimmerpflanzenlexikon.info/lexikon.php%3Fid%3D802%26modus%3D3%26letter%3DB&sa=X&oi=translate&resnum=7&ct=result&prev=/search%3Fq%3Db%25C3%25A9gonia%2Bboweri%2Bnigramarga%26hl%3Dfr%26lr%3D%26sa%3DG