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The journal of the Western Australian Herbarium

Two new Western Australian species of Drummondita (Rutaceae: Boronieae) from banded ironstone ranges of the Yilgarn Craton

Two new species of Drummondita Harv. are described, both of which occur on rocky hillsides on the Yilgarn Craton of Western Australia. One of these, D. fulva A.S.Markey & R.A.Meissn., has close affinities to D. microphylla Paul G.Wilson but differs in having a reddish apiculus on the leaf apex, tawny new growth, and sub-orbicular, flattened sepals. The other, D. rubroviridis R.A.Meissn, is closely allied to D. wilsonii F.H.Mollemans, from which it is distinguished by a combination of spreading leaves, solitary, larger red flowers with green petal lobes, and a pointed apical leaf gland. Drummondita fulva is relatively widespread, occurring on both Banded Iron Formation and associated metasedimentary rocks in the Yalgoo region, while D. rubroviridis has a restricted distribution and appears to be endemic to a single banded ironstone range in the Koolanooka Hills. A taxonomic description of these two new species, images and maps of their respective distributions are provided.