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A revision of Cassinia (Asteraceae: Gnaphalieae) in Australia. 5. Additional taxa in Section Leptocephalae
A. E.
Orchard
Centre for Plant Biodiversity Research, CSIRO Plant Industry, GPO Box 1600, Canberra, ACT 2601, Australia. Email: Tony.Orchard@deh.gov.au
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Australian Systematic Botany 19(2) 183–191 http://dx.doi.org/10.1071/SB05018
Submitted: 15 June 2005
Accepted: 24 October 2005
Published online: 28 April 2006
Abstract
Additional collections and re-examination of previous specimens allow the description of new taxa in Cassinia. Cassinia sect. Leptocephalae is divided into three series: ser. Leptocephaleae, which comprises the C. leptocephala / C. cunninghamii / C. decipiens group; ser. Macrocephaleae Orchard, ser. nov. to accommodate C. macrocephala and C. denticulata; and ser. Compactae Orchard, ser. nov., to accommodate the C. compacta group of five brown-headed species. Further evidence is presented to support the suggestion that the lack of paleae in those Cassinia species with few florets is an artefact, and that the innermost ‘phyllaries’ are in fact paleae. Two new subspecies of C. macrocephala are described: subsp. petrapendula Orchard, subsp. nov. and subsp. storyi Orchard, subsp. nov., plus one new species, Cassinia furtiva Orchard, sp. nov.
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