Skip to main content

Service Notice

The Western Australian Herbarium’s collections management system, WAHerb, and DBCA’s taxonomic names application, WACensus, have been set to read-only mode since 1 October 2025. Recent taxonomic changes are not reflected in Florabase, herbarium collections, or in the census. We are hoping to be able to reinstate services around December 15; we will provide an update at that time.

The notice period started at 9:00 am on Wednesday, 1 October 2025 +08:00 and will end at 12:00 pm on Monday, 15 December 2025 +08:00.

Plant of the Month
October 2025

POTM

Rhodanthe margarethae (F.Muell.) Paul G.Wilson

Image

While not as well-known as some of the other members of the genus Rhodanthe, which also includes the ‘paper daisies’, Rhodanthe margarethae is a striking species. It is an annual, erect, open herb to 1 metre high with pinkish stems and widely spaced, stem-clasping leaves. The terminal capitate inflorescences of yellow florets are surrounded by several whorls of pure white involucral bracts. The flowers have been described as resembling ‘poached eggs’ by two prolific collectors. It is also known for having a strong smell, some referring to it as ‘mint-like’, while others, less favourably, as simply ‘foetid’. Flowering occurs from August to October.

Rhodanthe margarethae is endemic to Western Australia and is distributed across the Pilbara, the northern Little Sandy Desert and the northern Gascoyne. It usually occurs in gorges, on rocky ridges and outcrops, cliff lines, rocky creeks and drainage lines, and near pools.

John Forrest collected the type specimen of Rhodanthe margarethae in 1878 and the specific epithet honours his wife, Margaret Forrest.

Photo: S. Dillon

Find out more about Rhodanthe margarethae (F.Muell.) Paul G.Wilson