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Re-appraisal of the taxonomy of acacia holosericea, including the description of a new species, a. Colei, and the reinstatement of a. neurocarpa
Journal article   Peer reviewed

Re-appraisal of the taxonomy of acacia holosericea, including the description of a new species, a. Colei, and the reinstatement of a. neurocarpa

B R Maslin and Lex Thomson
Australian Systematic Botany, Vol.5(6), pp.729-743
1992
DOI: https://doi.org/10.1071/SB9920729
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https://doi.org/10.1071/SB9920729View
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Abstract

systematics taxonomy Acacia colei Acacia holosericea Acacia neurocarpa
The taxonomic status of Acacia holosericea A. Cunn. ex Don is re-appraised in the light of recent isozyme, chromosome and field studies, as well as from a critical examination of specimens at BM, BRI, K, DNA and PERTH. Accordingly, A. holosericea, as traditionally defined, is now regarded as comprising three distinct species, each corresponding to a different level of ploidy. Acacia holosericea A. Cunn. ex Don (tetraploid) is widespread, principally in tropical/subtropical areas of Western Australia, the Northern Territory and Queensland. Acacia neurocarpa A. Cunn. ex Hook, (diploid), occurs in tropical/subtropical Western Australia and the Northern Territory and until now has been regarded as conspecific with A. holosericea. Acacia colei Maslin and Thomson (hexaploid) is described as a new species which appears to have evolved as an allopolyploid hybrid between A. neurocarpa and A. cowleana (tetraploid). It is widespread and common in subtropical/arid Western Australia, the Northern Territory and Queensland. These four species are illustrated, mapped and their principal discriminating features given in tabular form and in a key. Acacia holosericea is neotypified to exclude A. neurocarpa, and A. neurocarpa is lectotypified to exclude A. dunnii (Maiden) Turrill. © 1992, CSIRO. All rights reserved.

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