The Genus Taraxacum (Asteraceae) in the Southern Hemisphere. I. The Section Antarctica Handel-Mazzetti and Notes on Dandelions of Australasia

A survey of Taraxacum taxa described from Latin America is presented. Taraxacum sect. Antarctica is revised taxonomically. The plants usually classified as members of the section in the southernmost South America, often under several species names, proved to represent a single taxon, Taraxacum gilli...

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Bibliographic Details
Published in:Folia geobotanica 2004-01, Vol.39 (2), p.205-220
Main Authors: Uhlemann, Ingo, Kirschner, Jan, Štěpánek, Jan
Format: Article
Language:English
Subjects:
Achenes
Antarctic regions
Arroyos
Biological taxonomies
Bracts
Leaves
Lectotypes
Plants
Southern hemisphere
Taxa
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Summary:A survey of Taraxacum taxa described from Latin America is presented. Taraxacum sect. Antarctica is revised taxonomically. The plants usually classified as members of the section in the southernmost South America, often under several species names, proved to represent a single taxon, Taraxacum gilliesii. The species proved to be diploid with 2n=16, reproducing sexually, which is documented by tetrad formation in megasporogenesis. The sexual reproduction is responsible for the considerable variation in a number of the species' characters. Full synonymy, notes on the nomenclature (including typification) and a description of the section and the species are also given. An analysis of plants often referred to as T. magellanicum from New Zealand is given. Plants from Australia and New Zealand were found to be sexual and belonging to a new section, T. sect. Australasica.
ISSN:1211-9520
1874-9348
DOI:10.1007/BF02805246