Skip to main content

The journal of the Western Australian Herbarium

Observations on the rare triggerplant Stylidium coroniforme (Stylidiaceae) and the description of two allied taxa of conservation concern

Stylidium amabile Wege & Coates, a new, rare triggerplant from near Maya in south-west Western Australia, is described and illustrated. This new species has morphological affinity to the rare Wongan Hills triggerplant S. coroniforme F.L.Erickson & J.H.Willis, but has a distinct stigma, a different pattern of corolla markings and is genetically distinct. A revised description of S. coroniforme is provided and S. coroniforme subsp. amblyphyllum Wege, a new infraspecific taxon with distinctive leaves and a distribution near Quairading, is recognised. These three taxa are among the most geographically restricted within the triggerplant genus and all are vulnerable to local extinction.