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Nuytsia
The journal of the Western Australian Herbarium

A revision of the Hibbertia hypericoides species group (Dilleniaceae)
THIELE, K.R. AND COCKERTON, G.T.B.

The Hibbertia hypericoides (DC.) Benth. species group comprises four species endemic in Western Australia. Hibbertia hypericoides is the most widespread species of Hibbertia Andrews in Western Australia, and exhibits significant and complex variation. The new subspecies H. hypericoides subsp. septentrionalis K.R.Thiele & Cockerton is described to accommodate a long-recognised form that occurs in the northern part of its range. The new species H. cockertoniana K.R.Thiele, previously included in H. hypericoides, is described. Descriptions are also provided for H. hypericoides subsp. hypericoides, H. silvestris Diels and H. furfuracea (R.Br. ex DC.) Benth., the other taxa in the group.