Index Kewensis : plantarum phanerogamarum. Supplementum sextum decimum, Nomina et synonyma omnium familiarum et graduum inframiliarum ab initio anni MDCCCCLXXI ad finem anni MDCCCCLXXV nonnulla etiam . ISBN 0198545312. Published by E Prelo Clarendoniano in 1981. Publication and catalogue information, links to buy online and reader comments.