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New series, subseries, species and subspecies of Eucalyptus (Myrtaceae) from Western Australia and from South Australia

1993; Western Australian Herbarium; Volume: 9; Issue: Volume 9 Part 1, 11 Jun 1993 Linguagem: Inglês

10.58828/nuy00192

2200-2790

Murray Ian Hill Brooker, Stephen D. Hopper,

Plant and Fungal Species Descriptions

New series, subseries, species and subspecies of Eucalyptus (Myrtaceae) from Western Australia and from South Australia.Nuytsia 9 (1): 1-68 (1993), Three new series, six new subseries, twentytwo new species and twenty new subspecies of Eucalyptus are described.New taxa are treated in the order and nomenclature of the Flora of Australia Volume 19 (1988) from which we deviate only when we consider an updated treatment necessary.The new series Falcatae is erected and divided into two subseries, Falcatae and Decipientes.The series Micrantherae s.s. is expanded to include the new subseries _Bakerianae, and a new series Balladonienses is erected.E. lane-poolei of series Curviptera is segregated in the new E subseries Inflexae , E. caesia in the new E. series Caesiae, while E, series Orbifoliae comprises the remaining Minni Ritchi species.A new subseries Cupreanae is erected in E. series Lucasianae.Diagnostic notes on each taxonomic series are given at the head of the relevant groups of species throughout the paper.The new taxa are illustrated, except for E, ebbanoensis subsp.photina and E. marginata subsp.thalassica for which leaf colour and leaf gloss are the diagnostic characters, E. marginata subsp.elegantella and E. macrocarpa subsp.elachantha for which habit, bark characters and leaf, bud and fruit dimensions are the diagnostic characters and E. decipiens subspp.chalara and adesmophloia for which bark characters only are diagnostic.Distribution maps are provided.All the new taxa are endemic to Western Australia except for E. glomerosa and E. kingsmillii subsp.alatissima, both of which extend into the desert region of South Australia.Nuytsia Vol. 9, No. 1 ( 1 993)We are not satisfied that any published formal classifications of the genus Eucalyptus adequately deal with many groups of species which we treat herein.Hence, we have erected new series and subseries where needed.Our initial data are derived largely from our extensive field experience, the eucalypt collections in the Western Australian Herbarium (PERTH) and the CSIRO Division of Plant Industry (CANB) and from discussions with colleagues and other collectors.In addition, we have relied to a large extent upon glasshouse trials to complete the comparative morphological studies on seedling morphology.Many of the new species occur over a relatively wide range and are in sufficient abundance or in protected areas that they are in no danger of extinction.Some are of restricted distribution in agricultural areas but their occurrence on land unsuitable for farming, e.g.lateritic breakaways, may save them and their associated vegetation from being cleared.One of the species of restricted distribution.E. angularis, produces apparently healthy buds and flowers but is not known to have set seed.Tests may indicate that the two populations are actually proliferations of single individuals, but its distinctiveness is worthy of taxonomic recognition.Most of the descriptive terms used in the digests for species are explained and illustrated in Brooker & Kleinig ( 1 990).It is of particular value to recognise the tree/mallet distinction, the latter being a habit form peculiar to Western Australia.For an account of our taxonomic concepts, materials and methods, and background information on studies on Western Australian eucalypts, see Brooker & Hopper (1991).