Drosera bicolor Lowrie & Carlquist is endemic to southwestern Australia. It is an erect tuberous sundew with alternate leaves and a basal rosette, placed in Drosera subgenus Ergaleium section Ergaleium. Prior to its formal description this species was informally known as 'D. peltata 'Hammersley''. Since its description, debate has continued as to whether it is a distinct taxon or is better treated in the broader concept of Drosera peltata Thunb. This paper presents a more detailed description of this taxon and discusses its taxonomic status.