A taxonomic revision of the Pultenaea setulosa species complex is presented, recognising 18 species. Pultenaea setulosa is endemic to south-east Queensland. We reinstate Pultenaea boormanii, P. campbellii (endemic to NSW) and P. lapidosa (endemic to Victoria). We describe 14 new species, all endemic to NSW: Pultenaea acanthocalyx, Pultenaea corrickiae, Pultenaea estelleae, Pultenaea farmeriana, Pultenaea hoskingii, Pultenaea imminuta, Pultenaea murrayi, Pultenaea palssoniae, Pultenaea praetermissa, Pultenaea purdieae, Pultenaea renneri, Pultenaea venusta, Pultenaea westonii and Pultenaea woolcockiorum. Pultenaea procumbens and P. setigera are recircumscribed. (Photograph credit: M. Fagg.)

Understanding species boundaries is crucial for conserving threatened rainforest species. In Australia, the Fontainea plant group faces challenges because of their limited, sometimes critically small, populations and complex taxonomy. A new study combines DNA analysis and physical characteristics to define species boundaries, showing a potential novel species, emphasising the need for conservation efforts, and highlighting the broader importance of accurate species identification for effective conservation strategies. (Photograph by Aaron Brunton.)

Some species of the legume genus Derris have been long used by people as insecticides and fish poisons due to certain compounds such as rotenone contained in their tissues. Yet, science has not described all the diversity in this important group of plants. Through detailed study in the field and laboratory we have revised the species of Derris and Brachypterum in Australia, and named two new Australian species of Brachypterum.