top of page
Cuckoo wasp strip.jpg

Open-access, online, rapid taxonomy

Australian Journal of 




Four new small-flowered species of Western Australian Hibbertia (Dilleniaceae)

K.R. Thiele & T.A. Hammer

Author details ⏷

K.R. Thiele [1] & T.A. Hammer [2,3]

[1] School of Biological Sciences, University of Western Australia, 35 Stirling Hwy, Crawley WA 6009
[2] Botanic Gardens and State Herbarium of South Australia, Hackney Road, Adelaide, South Australia 5005
[3] School of Biological Sciences, The University of Adelaide, North Terrace, Adelaide, South Australia 5000


Herbarium and field assessments of the Western Australian Hibbertia diamesogenos (Steud.) J.R.Wheeler (Dilleniaceae) have shown that it comprises three distinct, sympatric species, two of which, H. parvula K.R.Thiele and H. xenandra K.R.Thiele, are described here as new. The segregation of H. parvula and H. xenandra from H. diamesogenos resolves the morphology of the latter, which is now substantially less variable than previously believed. It is likely that the three species are not closely related. Two further new species, H. micrantha K.R.Thiele & T.Hammer and H. humilis K.R.Thiele, are also described as new here, both segregated from material previously determined as H. avonensis J.R.Wheeler. All these species are characterised by very small flowers. A new description is also provided for H. diamesogenos, which is recircumscribed to exclude H. parvula and H. xenandra.

Cite this paper as: Thiele KR & Hammer TA (2024). Four new small-flowered species of Western Australian Hibbertia (Dilleniaceae). Australian Journal of Taxonomy 53: 1–12. doi:

This paper was published on: 6/3/2024





bottom of page