Endoraecium is a genus of rust fungi that infects several species of Acacia in Australia, South-East Asia and Hawaii. This study investigated the systematics of Endoraecium from 55 specimens in Australia based on a combined morphological and molecular approach. Phylogenetic analyses were conducted on partitioned datasets of loci from ribosomal and mitochondrial DNA. The recovered molecular phylogeny supported a recently published taxonomy based on morphology and host range that divided Endoraecium digitatum into five species. Spore morphology is synapomorphic and there is evidence Endoraecium co-evolved with its Acacia hosts. The broad host ranges of E. digitatum, E. parvum, E. phyllodiorum and E. violae-faustiae are revised in light of this study, and nine new species of Endoraecium are described from Australia based on host taxonomy, morphology and phylogenetic concordance.

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Keywords Atelocauda, endocyclic rusts, Mimosoideae, Racospermyces, Raveneliaceae, Uredinales
Journal Persoonia - Molecular Phylogeny and Evolution of Fungi
Rights

Released under the CC-BY 4.0 ("Attribution") License

Citation
McTaggart, A.R, Doungsa-ard, C, Geering, A.D.W, Aime, M.C, & Shivas, R.G. (2015). A co-evolutionary relationship exists between Endoraecium (Pucciniales) and its Acacia hosts in Australia. Persoonia - Molecular Phylogeny and Evolution of Fungi, 35, 50–62.