? rigida E.Mey. ex Drège Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fabales family Polygalaceae genus Muraltia species Muraltia rigida Name Homonyms ? rigida Perner, 1907 ? rigida Sowerby, 1829 ? rigida Girty, 1908 ? rigida Scudder, 1890 ? rigida Dun, 1909 ? rigida Lightfoot ? rigida Sw. ? rigida E.Mey. ex Drège