Evidence linking life-form to a major shift in diversification rate in Crassula by Lu, M, Fradera-Soler, M, Forest, F, Barraclough, TG, Grace, OM

A taxonomic revision of the genus Hydnora (Hydnoraceae) by Hatt, SA, Thorogood, CJ, Bolin, JF, Musselman, LJ, Cameron, DD, Grace, OM